Airworthiness Directives; The Boeing Company Airplanes, 27749-27786 [2023-09431]
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Federal Register / Vol. 88, No. 85 / Wednesday, May 3, 2023 / Proposed Rules
(m) Related Information
(1) The Manager, Operational Safety
Branch, FAA, has the authority to approve
AMOCs for this AD, if requested using the
procedures found in 14 CFR 39.19. In
accordance with 14 CFR 39.19, send your
request to your principal inspector or
responsible Flight Standards Office, as
appropriate. If sending information directly
to the manager of the Operational Safety
Branch, send it to the attention of the person
identified in paragraph (m) of this AD.
Information may be emailed to: AMOC@
faa.gov.
(2) Before using any approved AMOC,
notify your appropriate principal inspector,
or lacking a principal inspector, the manager
of the responsible Flight Standards Office.
(3) AMOCs approved for AD 2021–23–12,
Amendment 39–21810 (86 FR 69984,
December 9, 2021) providing relief for
specific radio altimeter installations are
approved as AMOCs for the requirements
specified in paragraph (h) of this AD until
June 30, 2023.
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DEPARTMENT OF TRANSPORTATION
For more information about this AD,
contact Brett Portwood, Continued
Operational Safety Technical Advisor, COS
Program Management Section, Operational
Safety Branch, FAA, 3960 Paramount
Boulevard, Lakewood, CA 90712–4137;
phone: 817–222–5390; email:
operationalsafety@faa.gov.
(m) Material Incorporated by Reference
None.
Issued on April 28, 2023.
Michael Linegang,
Acting Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2023–09435 Filed 5–1–23; 4:15 pm]
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Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2023–0923; Project
Identifier AD–2022–01432–T]
RIN 2120–AA64
Airworthiness Directives; The Boeing
Company Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
The FAA proposes to
supersede Airworthiness Directive (AD)
2022–09–18, which applies to all The
Boeing Company Model 707, 717, and
727 airplanes; Model DC–8, DC–9, and
DC–10 airplanes; Model MD–10 and
MD–11 airplanes; Model DC–9–81 (MD–
81), DC–9–82 (MD–82), DC–9–83 (MD–
83), DC–9–87 (MD–87), and MD–88
SUMMARY:
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(l) Alternative Methods of Compliance
(AMOCs)
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airplanes; and Model MD 90–30
airplanes. AD 2022–09–18 requires
revising the limitations and operating
procedures sections of the existing
airplane flight manual (AFM) to
incorporate specific operating
procedures for, depending on the
airplane model, instrument landing
system (ILS) approaches, non-precision
approaches, ground spoiler deployment,
and go-around and missed approaches,
when in the presence of 5G C Band
interference as identified by Notices to
Air Missions (NOTAMs). Since the FAA
issued AD 2022–09–18, the FAA
determined that additional limitations
are needed due to the continued
deployment of new 5G C-Band base
stations whose signals are expected to
cover most of the contiguous United
States at transmission frequencies
between 3.7–3.98 GHz. This proposed
AD would require revising the
limitations and operating procedures
sections of the AFM to incorporate
specific operating procedures for,
depending on the airplane model, ILS
approaches, non-precision approaches,
ground spoiler deployment, and goaround and missed approaches, due to
the presence of 5G C-Band interference.
The FAA is proposing this AD to
address the unsafe condition on these
products.
DATES: The FAA must receive comments
on this proposed AD by May 23, 2023.
ADDRESSES: You may send comments,
using the procedures found in 14 CFR
11.43 and 11.45, by any of the following
methods:
• Federal eRulemaking Portal: Go to
regulations.gov. Follow the instructions
for submitting comments.
• Fax: 202–493–2251.
• Mail: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue SE,
Washington, DC 20590.
• Hand Delivery: Deliver to Mail
address above between 9 a.m. and 5
p.m., Monday through Friday, except
Federal holidays.
AD Docket: You may examine the AD
docket at regulations.gov under Docket
No. FAA–2023–0923; or in person at
Docket Operations between 9 a.m. and
5 p.m., Monday through Friday, except
Federal holidays. The AD docket
contains this NPRM, any comments
received, and other information. The
street address for Docket Operations is
listed above.
FOR FURTHER INFORMATION CONTACT:
Brett Portwood, Continued Operational
Safety Technical Advisor, COS Program
Management Section, Operational
Safety Branch, FAA, 3960 Paramount
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Boulevard, Lakewood, CA 90712–4137;
phone: 817–222–5390; email:
operationalsafety@faa.gov.
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any
written relevant data, views, or
arguments about this proposal. Send
your comments to an address listed
under ADDRESSES. Include ‘‘Docket No.
FAA–2023–0923; Project Identifier AD–
2022–01432–T’’ at the beginning of your
comments. The most helpful comments
reference a specific portion of the
proposal, explain the reason for any
recommended change, and include
supporting data. The FAA will consider
all comments received by the closing
date and may amend the proposal
because of those comments.
Except for Confidential Business
Information (CBI) as described in the
following paragraph, and other
information as described in 14 CFR
11.35, the FAA will post all comments
received, without change, to
regulations.gov, including any personal
information you provide. The agency
will also post a report summarizing each
substantive verbal contact received
about this proposed AD.
Confidential Business Information
CBI is commercial or financial
information that is both customarily and
actually treated as private by its owner.
Under the Freedom of Information Act
(FOIA) (5 U.S.C. 552), CBI is exempt
from public disclosure. If your
comments responsive to this NPRM
contain commercial or financial
information that is customarily treated
as private, that you actually treat as
private, and that is relevant or
responsive to this NPRM, it is important
that you clearly designate the submitted
comments as CBI. Please mark each
page of your submission containing CBI
as ‘‘PROPIN.’’ The FAA will treat such
marked submissions as confidential
under the FOIA, and they will not be
placed in the public docket of this
NPRM. Submissions containing CBI
should be sent to Brett Portwood,
Continued Operational Safety Technical
Advisor, COS Program Management
Section, Operational Safety Branch,
FAA, 3960 Paramount Boulevard,
Lakewood, CA 90712–4137; phone:
817–222–5390; email:
operationalsafety@faa.gov. Any
commentary that the FAA receives that
is not specifically designated as CBI will
be placed in the public docket for this
rulemaking.
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Background
The FAA issued AD 2021–23–12,
Amendment 39–21810 (86 FR 69984,
December 9, 2021) (AD 2021–23–12), for
all transport and commuter category
airplanes equipped with a radio
altimeter. AD 2021–23–12 was
prompted by a determination that radio
altimeters cannot be relied upon to
perform their intended function if they
experience interference from wireless
broadband operations in the 3.7–3.98
GHz frequency band (5G C-Band). AD
2021–23–12 requires revising the
limitations section of the existing AFM
to incorporate limitations prohibiting
certain operations requiring radio
altimeter data when in the presence of
5G C-Band interference as identified by
NOTAMs. The agency issued AD 2021–
23–12 because radio altimeter anomalies
that are undetected by the automation or
pilot, particularly close to the ground
(e.g., landing flare), could lead to loss of
continued safe flight and landing.
The FAA subsequently identified an
additional hazard presented by 5G CBand interference on The Boeing
Company Model 707, 717, and 727
airplanes; Model DC–8, DC–9, and DC–
10 airplanes; Model MD–10 and MD–11
airplanes; Model DC–9–81 (MD–81),
DC–9–82 (MD–82), DC–9–83 (MD–83),
DC–9–87 (MD–87), and MD–88
airplanes; and Model MD–90–30
airplanes, and issued AD 2022–09–18,
Amendment 39–22038 (87 FR 31097,
May 23, 2022) (AD 2022–09–18). AD
2022–09–18 was prompted by a
determination that, during approach,
landings, and go-arounds, as a result of
5G C-Band interference, certain airplane
systems may not properly function,
resulting in increased flightcrew
workload while on approach with the
flight director, autothrottle, or autopilot
engaged. AD 2022–09–18 requires
revising the limitations and operating
procedures sections of the existing AFM
to incorporate specific operating
procedures for, depending on the
airplane model, ILS approaches, nonprecision approaches, ground spoiler
deployment, and go-around and missed
approaches, when in the presence of 5G
C-Band interference as identified by
NOTAMs. The agency issued AD 2022–
09–18 to address 5G C-Band
interference that could result in
increased flightcrew workload and
could lead to reduced ability of the
flightcrew to maintain safe flight and
landing of the airplane.
Actions Since AD 2022–09–18 Was
Issued
Since issuing AD 2022–09–18, the
FAA determined that additional
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limitations are needed due to the
continued deployment of new 5G CBand base stations whose signals are
expected to cover most of the
contiguous United States at
transmission frequencies between 3.7–
3.98 GHz. Therefore, the FAA issued an
NPRM, Docket No. FAA–2022–1647 (88
FR 1520, January 11, 2023) (the NPRM),
proposing to supersede AD 2021–23–12.
In the NPRM, the FAA proposed to
retain most of the operational
prohibitions required by AD 2021–23–
12 until June 30, 2023; on or before June
30, 2023, operators would be required to
revise their existing AFM to prohibit
these operations unless the airplane has
a radio altimeter meeting proposed
minimum performance levels (a defined
power spectral density (PSD) curve as
well as a defined aggregate spurious
emission level) and is operating at a 5G
C-Band mitigated airport (5G CMA). In
the NPRM, the FAA also proposed to
require all airplanes operating under 14
CFR part 121 to have a radio altimeter
meeting the proposed minimum
performance standards by February 1,
2024.
Since the NPRM was published, the
FAA has determined that a PSD curve
is a more appropriate method to define
performance than a single fixed
emission level. The proposed PSD curve
more accurately reflects differences in
radio altimeter susceptibility to
interfering emissions at different
altitude levels. The FAA plans to issue
guidance on how to show compliance
with both the fundamental PSD curve
and spurious PSD curve, including the
data to be submitted, for the FAA to
approve the method used.
AD 2022–09–18 relies on the FAA’s
use of NOTAMs to identify 5G C-band
interference at certain airports in the
U.S. airspace. As explained in more
detail in the NPRM, those NOTAMs are
no longer the best means of
communicating the location of the 5G CBand environment. Therefore, this
proposed AD would retain the AFM
limitations and operating procedures
required by AD 2022–09–18 until June
30, 2023. On or before June 30, 2023,
this proposed AD would require
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operators to replace the limitations with
limitations prohibiting the same
operations, except the prohibitions
would not be tied to NOTAMs but
instead would depend on whether the
airplane is operated at a 5G CMA as
identified by an FAA Domestic Notice.
Because the applicable 5G C-Band
Interference operating procedures
required by AD 2022–09–18 reference
AD 2021–23–12 for certain prohibited
ILS approaches, this proposed AD
would require operators to replace the
procedure with an operating procedure
containing the same information, except
it would list the specific prohibited ILS
approaches.
FAA’s Determination
The FAA is issuing this NPRM after
determining that the unsafe condition
described previously is likely to exist or
develop on other products of the same
type design.
Proposed AD Requirements in This
NPRM
This proposed AD would retain the
AFM revisions required by AD 2022–
09–18 until June 30, 2023. On or before
June 30, 2023, this proposed AD would
require replacing those AFM revisions
with limitations requiring the same
procedures for ILS approaches, nonprecision approaches, ground spoiler
deployment, and go-around and missed
approaches, at all airports for non-radio
altimeter tolerant airplanes. For radio
altimeter tolerant airplanes, the
procedures would not be required at 5G
CMAs as identified in an FAA Domestic
Notice. The minimum performance
levels in this proposed AD for
determining whether an airplane is
radio altimeter tolerant are the same
minimum performance levels proposed
in the NPRM, except the FAA has
replaced the proposed fixed emission
level with a proposed PSD curve
emission threshold that more accurately
reflects differences in radio altimeter
susceptibility to interfering emissions at
different altitude levels.
Paragraph (m)(3) of this proposed AD
specifies that AMOCs approved for AD
2021–23–12 providing relief for specific
radio altimeter installations would be
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approved as AMOCs for the
requirements specified in paragraph (h)
of this proposed AD until June 30, 2023.
Interim Action
The FAA considers that this AD, if
adopted as proposed, would be an
interim action. Once the Technical
Standard Order (TSO) standard for radio
altimeters is established, which will
follow the existing international
technical consensus on the
establishment of the minimum
operational performance standards
(MOPS), the FAA anticipates that the
MOPS will be incorporated into the
TSO. The FAA also anticipates that
aircraft incorporating equipment
approved under the new Radio
Altimeter TSO will be able to operate in
both 5G CMAs and non-5G CMAs with
no 5G C-Band-related AFM limitations.
Once a new radio altimeter TSO is
developed, approved, and available, the
FAA might consider additional
rulemaking.
Costs of Compliance
The cost information below describes
the costs to change the AFM. Although
this proposed AD would largely
maintain the AFM limitations currently
required by AD 2022–09–18, the FAA
acknowledges that this proposed AD
may also impose costs on some aircraft
operators from having to change their
conduct to comply with the amended
AFM. However, the FAA lacks the data
necessary to quantify the costs
associated with aircraft operators
changing their conduct. The FAA is
seeking public comment on these costs
so the agency can more fully account for
the impact of this regulatory action.
The FAA estimates that this AD, if
adopted as proposed, would affect 476
airplanes of U.S. registry.1 The FAA
estimates the following costs to comply
with this proposed AD:
1 This is the number of Boeing Model 707, 717,
and 727 airplanes; Model DC–8, DC–9, and DC–10
airplanes; Model MD 10 and MD–11 airplanes;
Model DC–9–81 (MD–81), DC–9–82 (MD–82), DC–
9–83 (MD–83), DC–9–87 (MD–87), and MD–88
airplanes; and Model MD 90–30 airplanes on the
FAA’s registry as of December 1, 2022.
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ESTIMATED COSTS
AFM revision (retained actions from AD
2022–09–18).
New AFM revisions (new proposed action) ....
1 work-hour × $85 per hour 2 = $85 ..............
$0
$85
$40,460
1 work-hour × $85 per hour = $85 .................
0
85
3 40,460
Title 49 of the United States Code
specifies the FAA’s authority to issue
rules on aviation safety. Subtitle I,
section 106, describes the authority of
the FAA Administrator. Subtitle VII,
Aviation Programs, describes in more
detail the scope of the Agency’s
authority.
The FAA is issuing this rulemaking
under the authority described in
Subtitle VII, Part A, Subpart III, Section
44701: General requirements. Under
that section, Congress charges the FAA
with promoting safe flight of civil
aircraft in air commerce by prescribing
regulations for practices, methods, and
procedures the Administrator finds
necessary for safety in air commerce.
This regulation is within the scope of
that authority because it addresses an
unsafe condition that is likely to exist or
develop on products identified in this
rulemaking action.
Regulatory Findings
The FAA has determined that this
proposed AD would not have federalism
implications under Executive Order
13132. This proposed AD would not
have a substantial direct effect on the
States, on the relationship between the
national Government and the States, or
on the distribution of power and
responsibilities among the various
levels of government.
For the reasons discussed above, I
certify that the proposed regulation:
(1) Is not a ‘‘significant regulatory
action’’ under Executive Order 12866,
(2) Would not affect intrastate
aviation in Alaska, and
(3) Would not have a significant
economic impact, positive or negative,
on a substantial number of small entities
under the criteria of the Regulatory
Flexibility Act.
Parts cost
Cost on U.S.
operators
Labor cost
Authority for This Rulemaking
The Proposed Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA proposes to amend 14 CFR part
39 as follows:
PART 39—AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by:
a. Removing Airworthiness Directive
(AD) 2022–09–18, Amendment 39–
22038 (87 FR 31097, May 23, 2022), and
■ b. Adding the following new AD:
■
■
The Boeing Company Airplanes: Docket No.
FAA–2023–0923; Project Identifier AD–
2022–01432–T.
(a) Comments Due Date
The FAA must receive comments on this
airworthiness directive (AD) by May 23,
2023.
(b) Affected ADs
This AD replaces AD 2022–09–18,
Amendment 39–22038 (87 FR 31097, May 23,
2022) (AD 2022–09–18).
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
(c) Applicability
This AD applies to all The Boeing
Company airplanes identified in paragraphs
(c)(1) through (9) of this AD, certificated in
any category.
(1) Model 707–100 Long Body, –200,
–100B Long Body, and –100B Short Body
series airplanes, and Model 707–300, –300B,
–300C, and –400 series airplanes.
(2) Model 717–200 airplanes.
(3) Model 727, 727C, 727–100, 727–100C,
727–200, and 727–200F series airplanes.
(4) Model DC–8–11, DC–8–12, DC–8–21,
DC–8–31, DC–8–32, DC–8–33, DC–8–41, DC–
8–42, DC–8–43, DC–8–51, DC–8–52, DC–8–
53, DC–8–55, DC–8F–54, DC–8F–55, DC–8–
61, DC–8–62, DC–8–63, DC–8–61F, DC–8–
62F, DC–8–63F, DC–8–71, DC–8–72, DC–8–
73, DC–8–71F, DC–8–72F, and DC–8–73F
airplanes.
(5) Model DC–9–11, DC–9–12, DC–9–13,
DC–9–14, DC–9–15, DC–9–15F, DC–9–21,
DC–9–31, DC–9–32, DC–9–32 (VC–9C), DC–
9–32F, DC–9–32F (C–9A, C–9B), DC–9–33F,
DC–9–34, DC–9–34F, DC–9–41, and DC–9–51
airplanes.
2 The labor rate of $85 per hour is the average
wage rate for an aviation mechanic.
3 The estimated cost for this revision would not
constitute a significant economic impact (even for
small entities) because $85 is a minimal cost
compared to the regular costs of maintaining and
operating a 707, 717, 727, DC–8, DC–9, DC–10, MD
10, MD–11, DC–9–81, DC–9–82, DC–9–83, DC–9–
List of Subjects in 14 CFR Part 39
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Cost per
product
Action
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(6) Model DC–10–10, DC–10–10F, DC–10–
15, DC–10–30, DC–10–30F (KC–10A and
KDC–10), DC–10–40, and DC–10–40F
airplanes.
(7) Model MD–10–10F and MD–10–30F
airplanes.
(8) Model MD–11 and MD–11F airplanes.
(9) Model DC–9–81 (MD–81), DC–9–82
(MD–82), DC–9–83 (MD–83), DC–9–87 (MD–
87), MD–88, and MD–90–30 airplanes.
(d) Subject
Air Transport Association (ATA) of
America Code 34, Navigation.
(e) Unsafe Condition
This AD was prompted by a determination
that radio altimeters cannot be relied upon to
perform their intended function if they
experience interference from wireless
broadband operations in the 3.7–3.98 GHz
frequency band (5G C-Band), and a
determination that during approach,
landings, and go-arounds, as a result of this
interference, certain airplane systems may
not properly function, resulting in increased
flightcrew workload while on approach with
the flight director, autothrottle, or autopilot
engaged. The FAA is issuing this AD to
address 5G C-Band interference that could
result in increased flightcrew workload and
could lead to reduced ability of the
flightcrew to maintain safe flight and landing
of the airplane.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Definitions
(1) For purposes of this AD, a ‘‘5G C-Band
mitigated airport’’ (5G CMA) is an airport at
which the telecommunications companies
have agreed to voluntarily limit their 5G
deployment at the request of the FAA, as
identified by an FAA Domestic Notice.
(2) For purposes of this AD, a ‘‘radio
altimeter tolerant airplane’’ is one for which
the radio altimeter, as installed, demonstrates
the tolerances specified in paragraphs
(g)(2)(i) and (ii) of this AD, using a method
approved by the FAA.
(i) Tolerance to radio altimeter
interference, for the fundamental emissions
(3.7–3.98 GHz), at or above the power
spectral density (PSD) curve threshold
specified in figure 1 to paragraph (g)(2)(i) of
this AD.
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airplane.
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Figure 1 to paragraph (g)(2)(i)—Fundamental
Effective Isotropic PSD at Outside Interface
of Aircraft Antenna
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specified in figure 2 to paragraph (g)(2)(ii) of
this AD.
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Figure 2 to paragraph (g)(2)(ii)—Spurious
Effective Isotropic PSD at Outside Interface
of Aircraft Antenna
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(ii) Tolerance to radio altimeter
interference, for the spurious emissions (4.2–
4.4 GHz), at or above the PSD curve threshold
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(3) For purposes of this AD, a ‘‘non-radio
altimeter tolerant airplane’’ is one for which
the radio altimeter, as installed, does not
demonstrate the tolerances specified in
paragraphs (g)(2)(i) and (ii) of this AD.
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(h) Retained Airplane Flight Manual (AFM)
Revision-Limitations
This paragraph restates the requirements of
paragraph (g) of AD 2022–09–18.
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(1) For airplanes identified in paragraphs
(c)(1) and (c)(3) through (6) of this AD:
Within 2 days after May 23, 2022 (the
effective date of AD 2022–09–18), revise the
Limitations Section of the existing AFM to
include the information specified in figure 3
to paragraph (h)(1) of this AD. This may be
done by inserting a copy of figure 3 to
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paragraph (h)(1) of this AD into the existing
AFM.
Figure 3 to paragraph (h)(1)—AFM
Limitations Revision for Model 707, 727,
DC–8, DC–9 (except DC–9–81 (MD–81), DC–
9–82 (MD–82), DC–9–83 (MD–83), and DC–
9–87 (MD–87)), and DC–10
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(2) For airplanes identified in paragraphs
(c)(2), (7), and (8) of this AD: Within 2 days
after May 23, 2022 (the effective date of AD
2022–09–18), revise the Limitations Section
of the existing AFM to include the
information specified in figure 4 to paragraph
(h)(2) of this AD. This may be done by
inserting a copy of figure 4 to paragraph
(h)(2) of this AD into the Limitations Section
of the existing AFM.
Figure 4 to paragraph (h)(2)—AFM
Limitations Revision for Model 717, MD–
10, and MD–11
(3) For airplanes identified in paragraph
(c)(9) of this AD: Within 2 days after May 23,
2022 (the effective date of AD 2022–09–18),
revise the Limitations Section of the existing
AFM to include the information specified in
figure 5 to paragraph (h)(3) of this AD. This
may be done by inserting a copy of figure 5
to paragraph (h)(3) of this AD into the
Limitations Section of the existing AFM.
Figure 5 to paragraph (h)(3)—AFM
Limitations Revision for Model DC–9–81
(MD–81), DC–9–82 (MD–82), DC–9–83 (MD–
83), DC–9–87 (MD–87), MD–88, and MD–
90–30
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Federal Register / Vol. 88, No. 85 / Wednesday, May 3, 2023 / Proposed Rules
Federal Register / Vol. 88, No. 85 / Wednesday, May 3, 2023 / Proposed Rules
(i) Retained AFM Revision-Operating
Procedures
This paragraph restates the requirements of
paragraph (h) of AD 2022–09–18.
(1) For airplanes identified in paragraphs
(c)(1) and (3) through (6) of this AD: Within
2 days after May 23, 2022 (the effective date
of AD 2022–09–18), revise the Operating
Procedures Section of the existing AFM to
include the information specified in figure 6
to paragraph (i)(1) of this AD. This may be
done by inserting a copy of figure 6 to
paragraph (i)(1) of this AD into the Operating
Procedures Section of the existing AFM.
Figure 6 to paragraph (i)(1)—AFM Operating
Procedures Revision for Model 707, 727,
DC–8, DC–9 (except DC–9–81 (MD–81), DC–
9–82 (MD–82), DC–9–83 (MD–83), and DC–
9–87 (MD–87)), and DC–10
(2) For airplanes identified in paragraph
(c)(2) of this AD: Within 2 days after May 23,
2022 (the effective date of AD 2022–09–18),
revise the Operating Procedures Section of
the existing AFM to include the information
specified in figure 7 to paragraph (i)(2) of this
AD. This may be done by inserting a copy of
figure 7 to paragraph (i)(2) of this AD into the
Operating Procedures Section of the existing
AFM.
Figure 7 to paragraph (i)(2)—AFM Operating
Procedures Revision for Model 717
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the existing AFM to include the information
specified in figure 8 to paragraph (i)(3) of this
AD. This may be done by inserting a copy of
figure 8 to paragraph (i)(3) of this AD into the
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Operating Procedures Section of the existing
AFM.
Figure 8 to paragraph (i)(3)—AFM Operating
Procedures Revision for Model MD–10
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(3) For airplanes identified in paragraph
(c)(7) of this AD: Within 2 days after May 23,
2022 (the effective date of AD 2022–09–18),
revise the Operating Procedures Section of
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18:28 May 02, 2023
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Federal Register / Vol. 88, No. 85 / Wednesday, May 3, 2023 / Proposed Rules
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Federal Register / Vol. 88, No. 85 / Wednesday, May 3, 2023 / Proposed Rules
Federal Register / Vol. 88, No. 85 / Wednesday, May 3, 2023 / Proposed Rules
(4) For airplanes identified in paragraph
(c)(8) of this AD: Within 2 days after the
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effective date of this AD, revise the Operating
Procedures Section of the existing AFM to
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include the information specified in figure 9
to paragraph (i)(4) of this AD. This may be
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Figure 9 to paragraph (i)(4)—AFM Operating
Procedures Revision for Model MD–11
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done by inserting a copy of figure 9 to
paragraph (i)(4) of this AD into the Operating
Procedures Section of the existing AFM.
27763
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18:28 May 02, 2023
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18:28 May 02, 2023
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Federal Register / Vol. 88, No. 85 / Wednesday, May 3, 2023 / Proposed Rules
Federal Register / Vol. 88, No. 85 / Wednesday, May 3, 2023 / Proposed Rules
lotter on DSK11XQN23PROD with PROPOSALS1
(5) For airplanes identified in paragraph
(c)(9) of this AD: Within 2 days after the
effective date of this AD, revise the Operating
Procedures Section of the existing AFM to
include the information specified in figure 10
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to paragraph (i)(5) of this AD. This may be
done by inserting a copy of figure 10 to
paragraph (i)(5) of this AD into the Operating
Procedures Section of the existing AFM.
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Figure 10 to paragraph (i)(5)—AFM Operating
Procedures Revision for Model DC–9–81
(MD–81), DC–9–82 (MD–82), DC–9–83 (MD–
83), DC–9–87 (MD–87), MD–88, and MD–
90–30
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27769
(j) New Requirement: AFM Limitations
Revision for Non-Radio Altimeter Tolerant
Airplanes
(1) For non-radio altimeter tolerant
airplanes identified in paragraphs (c)(1) and
(c)(3) through (6) of this AD, do the actions
specified in paragraphs (j)(1)(i) and (ii) of this
AD.
(i) On or before June 30, 2023, revise the
Limitations Section of the existing AFM to
include the information specified in figure 11
to paragraph (j)(1) of this AD. This may be
done by inserting a copy of figure 11 to
paragraph (j)(1) of this AD into the existing
AFM. Incorporating the AFM revision
required by this paragraph terminates the
AFM revision required by paragraph (h)(1) of
this AD.
(ii) Before further flight after incorporating
the limitations specified in figure 11 to
paragraph (j)(1) of this AD, remove the AFM
revision required by paragraph (h)(1) of this
AD.
Figure 11 to paragraph (j)(1)—AFM
Limitations Revision for Model 707, 727,
DC–8, DC–9 (except DC–9–81 (MD–81), DC–
9–82 (MD–82), DC–9–83 (MD–83), and DC–
9–87 (MD–87)), and DC–10
(2) For non-radio altimeter tolerant
airplanes identified in paragraphs (c)(2), (7),
and (8) of this AD, do the actions specified
in paragraphs (j)(2)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the
Limitations Section of the existing AFM to
include the information specified in figure 12
to paragraph (j)(2) of this AD. This may be
done by inserting a copy of figure 12 to
paragraph (j)(2) of this AD into the existing
AFM. Incorporating the AFM revision
required by this paragraph terminates the
AFM revision required by paragraph (h)(2) of
this AD.
(ii) Before further flight after incorporating
the limitations specified in figure 12 to
paragraph (j)(2) of this AD, remove the AFM
revision required by paragraph (h)(2) of this
AD.
Figure 12 to paragraph (j)(2)—AFM
Limitations Revision for Model 717, MD–
10, and MD–11
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Federal Register / Vol. 88, No. 85 / Wednesday, May 3, 2023 / Proposed Rules
Federal Register / Vol. 88, No. 85 / Wednesday, May 3, 2023 / Proposed Rules
(3) For non-radio altimeter tolerant
airplanes identified in paragraph (c)(9) of this
AD, do the actions specified in paragraphs
(j)(3)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the
Limitations Section of the existing AFM to
include the information specified in figure 13
to paragraph (j)(3) of this AD. This may be
done by inserting a copy of figure 13 to
paragraph (j)(3) of this AD into the existing
AFM. Incorporating the AFM revision
required by this paragraph terminates the
AFM revision required by paragraph (h)(3) of
this AD.
(ii) Before further flight after incorporating
the limitations specified in figure 13 to
paragraph (j)(3) of this AD, remove the AFM
revision required by paragraph (h)(3) of this
AD.
Figure 13 to paragraph (j)(3)—AFM
Limitations Revision for Model DC–9–81
(MD–81), DC–9–82 (MD–82), DC–9–83 (MD–
83), DC–9–87 (MD–87), MD–88, and MD–
90–30
(k) New Requirement: AFM Limitations
Revision for Radio Altimeter Tolerant
Airplanes
(1) For radio altimeter tolerant airplanes
identified in paragraphs (c)(1) and (c)(3)
through (6) of this AD, do the actions
specified in paragraphs (k)(1)(i) and (ii) of
this AD.
(i) On or before June 30, 2023, revise the
Limitations Section of the existing AFM to
include the information specified in figure 14
to paragraph (k)(1) of this AD. This may be
done by inserting a copy of figure 14 to
paragraph (k)(1) of this AD into the existing
AFM. Incorporating the AFM revision
required by this paragraph terminates the
AFM revision required by paragraph (h)(1) of
this AD.
(ii) Before further flight after incorporating
the limitations specified in figure 14 to
paragraph (k)(1) of this AD, remove the AFM
revision required by paragraph (h)(1) of this
AD.
Figure 14 to paragraph (k)(1)—AFM
Limitations Revision for Model 707, 727,
DC–8, DC–9 (except DC–9–81 (MD–81), DC–
9–82 (MD–82), DC–9–83 (MD–83), and DC–
9–87 (MD–87)), and DC–10
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(2) For radio altimeter tolerant airplanes
identified in paragraphs (c)(2), (7), and (8) of
this AD, do the actions specified in
paragraphs (k)(2)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the
Limitations Section of the existing AFM to
include the information specified in figure 15
to paragraph (k)(2) of this AD. This may be
done by inserting a copy of figure 15 to
paragraph (k)(2) of this AD into the existing
AFM. Incorporating the AFM revision
required by this paragraph terminates the
AFM revision required by paragraph (h)(2) of
this AD.
(ii) Before further flight after incorporating
the limitations specified in figure 15 to
paragraph (k)(2) of this AD, remove the AFM
revision required by paragraph (h)(2) of this
AD.
Figure 15 to paragraph (k)(2)—AFM
Limitations Revision for Model 717, MD–
10, and MD–11
(3) For radio altimeter tolerant airplanes
identified in paragraph (c)(9) of this AD, do
the actions specified in paragraphs (k)(3)(i)
and (ii) of this AD.
(i) On or before June 30, 2023, revise the
Limitations Section of the existing AFM to
include the information specified in figure 16
to paragraph (k)(3) of this AD. This may be
done by inserting a copy of figure 16 to
paragraph (k)(3) of this AD into the existing
AFM. Incorporating the AFM revision
required by this paragraph terminates the
AFM revision required by paragraph (h)(3) of
this AD.
(ii) Before further flight after incorporating
the limitations specified in figure 16 to
paragraph (k)(3) of this AD, remove the AFM
revision required by paragraph (h)(3) of this
AD.
Figure 16 to paragraph (k)(3)—AFM
Limitations Revision for Model DC–9–81
(MD–81), DC–9–82 (MD–82), DC–9–83 (MD–
83), DC–9–87 (MD–87), MD–88, and MD–
90–30
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Federal Register / Vol. 88, No. 85 / Wednesday, May 3, 2023 / Proposed Rules
Federal Register / Vol. 88, No. 85 / Wednesday, May 3, 2023 / Proposed Rules
(1) For airplanes identified in paragraphs
(c)(1) and (3) through (6) of this AD, do the
actions specified in paragraphs (l)(1)(i) and
(ii) of this AD.
(i) On or before June 30, 2023, revise the
Operating Procedures Section of the existing
AFM to include the information specified in
figure 17 to paragraph (l)(1) of this AD. This
may be done by inserting a copy of figure 17
to paragraph (l)(1) of this AD into the
Operating Procedures Section of the existing
AFM. Incorporating the AFM revision
required by this paragraph terminates the
AFM revision required by paragraph (i)(1) of
this AD.
(ii) Before further flight after incorporating
the limitations specified in figure 17 to
paragraph (l)(1) of this AD, remove the AFM
revision required by paragraph (i)(1) of this
AD.
Figure 17 to paragraph (1)(1)—AFM
Operating Procedures Revision for Model
707, 727, DC–8, DC–9 (except DC–9–81
(MD–81), DC–9–82 (MD–82), DC–9–83 (MD–
83), and DC–9–87 (MD–87)), and DC–10
(2) For airplanes identified in paragraph
(c)(2) of this AD, do the actions specified in
paragraphs (l)(2)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the
Operating Procedures Section of the existing
AFM to include the information specified in
figure 18 to paragraph (l)(2) of this AD. This
may be done by inserting a copy of figure 18
to paragraph (l)(2) of this AD into the
Operating Procedures Section of the existing
AFM. Incorporating the AFM revision
required by this paragraph terminates the
AFM revision required by paragraph (i)(2) of
this AD.
(ii) Before further flight after incorporating
the limitations specified in figure 18 to
paragraph (l)(2) of this AD, remove the AFM
revision required by paragraph (i)(2) of this
AD.
Figure 18 to paragraph (l)(2)—AFM Operating
Procedures Revision for Model 717
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(l) New Requirement: AFM Operating
Procedures Revision
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may be done by inserting a copy of figure 19
to paragraph (l)(3) of this AD into the
Operating Procedures Section of the existing
AFM. Incorporating the AFM revision
required by this paragraph terminates the
AFM revision required by paragraph (i)(3) of
this AD.
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(ii) Before further flight after incorporating
the limitations specified in figure 19 to
paragraph (l)(3) of this AD, remove the AFM
revision required by paragraph (i)(3) of this
AD.
Figure 19 to paragraph (l)(3)—AFM Operating
Procedures Revision for Model MD–10
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(3) For airplanes identified in paragraph
(c)(7) of this AD, do the actions specified in
paragraphs (l)(3)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the
Operating Procedures Section of the existing
AFM to include the information specified in
figure 19 to paragraph (l)(3) of this AD. This
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may be done by inserting a copy of figure 20
to paragraph (l)(4) of this AD into the
Operating Procedures Section of the existing
AFM. Incorporating the AFM revision
required by this paragraph terminates the
AFM revision required by paragraph (i)(4) of
this AD.
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(ii) Before further flight after incorporating
the limitations specified in figure 20 to
paragraph (l)(4) of this AD, remove the AFM
revision required by paragraph (i)(4) of this
AD.
Figure 20 to paragraph (l)(4)—AFM Operating
Procedures Revision for Model MD–11
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(4) For airplanes identified in paragraph
(c)(8) of this AD, do the actions specified in
paragraphs (l)(4)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the
Operating Procedures Section of the existing
AFM to include the information specified in
figure 20 to paragraph (l)(4) of this AD. This
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18:28 May 02, 2023
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to paragraph (l)(5) of this AD into the
Operating Procedures Section of the existing
AFM. Incorporating the AFM revision
required by this paragraph terminates the
AFM revision required by paragraph (i)(5) of
this AD.
(ii) Before further flight after incorporating
the limitations specified in figure 21 to
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paragraph (l)(5) of this AD, remove the AFM
revision required by paragraph (i)(5) of this
AD.
Figure 21 to paragraph (l)(5)—AFM Operating
Procedures Revision for Model DC–9–81
(MD–81), DC–9–82 (MD–82), DC–9–83 (MD–
83), DC–9–87 (MD–87), MD–88, and MD–
90–30
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(5) For airplanes identified in paragraph
(c)(9) of this AD, do the actions specified in
paragraphs (l)(5)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the
Operating Procedures Section of the existing
AFM to include the information specified in
figure 21 to paragraph (l)(5) of this AD. This
may be done by inserting a copy of figure 21
27785
27786
(m) Alternative Methods of Compliance
(AMOCs)
DEPARTMENT OF TRANSPORTATION
(1) The Manager, Operational Safety
Branch, FAA, has the authority to approve
AMOCs for this AD, if requested using the
procedures found in 14 CFR 39.19. In
accordance with 14 CFR 39.19, send your
request to your principal inspector or
responsible Flight Standards Office, as
appropriate. If sending information directly
to the manager of the Operational Safety
Branch, send it to the attention of the person
identified in paragraph (n) of this AD.
Information may be emailed to: AMOC@
faa.gov.
(2) Before using any approved AMOC,
notify your appropriate principal inspector,
or lacking a principal inspector, the manager
of the responsible Flight Standards Office.
(3) AMOCs approved for AD 2021–23–12,
Amendment 39–21810 (86 FR 69984,
December 9, 2021) providing relief for
specific radio altimeter installations are
approved as AMOCs for the requirements
specified in paragraph (h) of this AD until
June 30, 2023.
Federal Aviation Administration
(n) Related Information
For more information about this AD,
contact Brett Portwood, Continued
Operational Safety Technical Advisor, COS
Program Management Section, Operational
Safety Branch, FAA, 3960 Paramount
Boulevard, Lakewood, CA 90712–4137;
phone: 817–222–5390; email:
operationalsafety@faa.gov.
lotter on DSK11XQN23PROD with PROPOSALS1
(o) Material Incorporated by Reference
None.
Issued on April 28, 2023.
Michael Linegang,
Acting Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2023–09431 Filed 5–1–23; 4:15 pm]
BILLING CODE 4910–13–C
VerDate Sep<11>2014
18:28 May 02, 2023
Jkt 259001
14 CFR Part 39
[Docket No. FAA–2023–0671; Project
Identifier AD–2022–01428–T]
RIN 2120–AA64
Airworthiness Directives; The Boeing
Company Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
The FAA proposes to
supersede Airworthiness Directive (AD)
2022–03–20, which applies to all The
Boeing Company Model 737–8, 737–9,
and 737–8200 airplanes. AD 2022–03–
20 requires revising the limitations and
operating procedures sections of the
existing airplane flight manual (AFM) to
incorporate limitations prohibiting the
use of certain minimum equipment list
(MEL) items, and to incorporate
operating procedures for calculating
takeoff and landing distances, when in
the presence of 5G C-Band interference
as identified by Notices to Air Missions
(NOTAMs). Since the FAA issued AD
2022–03–20, the FAA determined that
additional limitations are needed due to
the continued deployment of new 5G CBand base stations whose signals are
expected to cover most of the
contiguous United States at
transmission frequencies between 3.7–
3.98 GHz. This proposed AD would
require revising the limitations section
of the existing AFM to incorporate
SUMMARY:
PO 00000
Frm 00075
Fmt 4702
Sfmt 4702
limitations prohibiting the use of certain
MEL items, and would retain the
operating procedures from AD 2022–03–
20 for calculating takeoff and landing
distances, due to the presence of 5G CBand interference. The FAA is
proposing this AD to address the unsafe
condition on these products.
DATES: The FAA must receive comments
on this proposed AD by May 23, 2023.
ADDRESSES: You may send comments,
using the procedures found in 14 CFR
11.43 and 11.45, by any of the following
methods:
• Federal eRulemaking Portal: Go to
regulations.gov. Follow the instructions
for submitting comments.
• Fax: 202–493–2251.
• Mail: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue SE,
Washington, DC 20590.
• Hand Delivery: Deliver to Mail
address above between 9 a.m. and 5
p.m., Monday through Friday, except
Federal holidays.
AD Docket: You may examine the AD
docket at regulations.gov under Docket
No. FAA–2023–0671; or in person at
Docket Operations between 9 a.m. and
5 p.m., Monday through Friday, except
Federal holidays. The AD docket
contains this NPRM, any comments
received, and other information. The
street address for Docket Operations is
listed above.
FOR FURTHER INFORMATION CONTACT:
Brett Portwood, Continued Operational
Safety Technical Advisor, COS Program
Management Section, Operational
Safety Branch, FAA, 3960 Paramount
Boulevard, Lakewood, CA 90712–4137;
E:\FR\FM\03MYP1.SGM
03MYP1
EP03MY23.065</GPH>
Federal Register / Vol. 88, No. 85 / Wednesday, May 3, 2023 / Proposed Rules
]]>Agencies
[Federal Register Volume 88, Number 85 (Wednesday, May 3, 2023)]
[Proposed Rules]
[Pages 27749-27786]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2023-09431]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2023-0923; Project Identifier AD-2022-01432-T]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: The FAA proposes to supersede Airworthiness Directive (AD)
2022-09-18, which applies to all The Boeing Company Model 707, 717, and
727 airplanes; Model DC-8, DC-9, and DC-10 airplanes; Model MD-10 and
MD-11 airplanes; Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-
83), DC-9-87 (MD-87), and MD-88
[[Page 27750]]
airplanes; and Model MD 90-30 airplanes. AD 2022-09-18 requires
revising the limitations and operating procedures sections of the
existing airplane flight manual (AFM) to incorporate specific operating
procedures for, depending on the airplane model, instrument landing
system (ILS) approaches, non-precision approaches, ground spoiler
deployment, and go-around and missed approaches, when in the presence
of 5G C Band interference as identified by Notices to Air Missions
(NOTAMs). Since the FAA issued AD 2022-09-18, the FAA determined that
additional limitations are needed due to the continued deployment of
new 5G C-Band base stations whose signals are expected to cover most of
the contiguous United States at transmission frequencies between 3.7-
3.98 GHz. This proposed AD would require revising the limitations and
operating procedures sections of the AFM to incorporate specific
operating procedures for, depending on the airplane model, ILS
approaches, non-precision approaches, ground spoiler deployment, and
go-around and missed approaches, due to the presence of 5G C-Band
interference. The FAA is proposing this AD to address the unsafe
condition on these products.
DATES: The FAA must receive comments on this proposed AD by May 23,
2023.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to regulations.gov. Follow
the instructions for submitting comments.
Fax: 202-493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2023-0923; or in person at Docket Operations between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD
docket contains this NPRM, any comments received, and other
information. The street address for Docket Operations is listed above.
FOR FURTHER INFORMATION CONTACT: Brett Portwood, Continued Operational
Safety Technical Advisor, COS Program Management Section, Operational
Safety Branch, FAA, 3960 Paramount Boulevard, Lakewood, CA 90712-4137;
phone: 817-222-5390; email: [email protected].
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under ADDRESSES. Include ``Docket No. FAA-2023-0923; Project Identifier
AD-2022-01432-T'' at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, explain the
reason for any recommended change, and include supporting data. The FAA
will consider all comments received by the closing date and may amend
the proposal because of those comments.
Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
regulations.gov, including any personal information you provide. The
agency will also post a report summarizing each substantive verbal
contact received about this proposed AD.
Confidential Business Information
CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this NPRM contain commercial
or financial information that is customarily treated as private, that
you actually treat as private, and that is relevant or responsive to
this NPRM, it is important that you clearly designate the submitted
comments as CBI. Please mark each page of your submission containing
CBI as ``PROPIN.'' The FAA will treat such marked submissions as
confidential under the FOIA, and they will not be placed in the public
docket of this NPRM. Submissions containing CBI should be sent to Brett
Portwood, Continued Operational Safety Technical Advisor, COS Program
Management Section, Operational Safety Branch, FAA, 3960 Paramount
Boulevard, Lakewood, CA 90712-4137; phone: 817-222-5390; email:
[email protected]. Any commentary that the FAA receives that is
not specifically designated as CBI will be placed in the public docket
for this rulemaking.
Background
The FAA issued AD 2021-23-12, Amendment 39-21810 (86 FR 69984,
December 9, 2021) (AD 2021-23-12), for all transport and commuter
category airplanes equipped with a radio altimeter. AD 2021-23-12 was
prompted by a determination that radio altimeters cannot be relied upon
to perform their intended function if they experience interference from
wireless broadband operations in the 3.7-3.98 GHz frequency band (5G C-
Band). AD 2021-23-12 requires revising the limitations section of the
existing AFM to incorporate limitations prohibiting certain operations
requiring radio altimeter data when in the presence of 5G C-Band
interference as identified by NOTAMs. The agency issued AD 2021-23-12
because radio altimeter anomalies that are undetected by the automation
or pilot, particularly close to the ground (e.g., landing flare), could
lead to loss of continued safe flight and landing.
The FAA subsequently identified an additional hazard presented by
5G C-Band interference on The Boeing Company Model 707, 717, and 727
airplanes; Model DC-8, DC-9, and DC-10 airplanes; Model MD-10 and MD-11
airplanes; Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-
9-87 (MD-87), and MD-88 airplanes; and Model MD-90-30 airplanes, and
issued AD 2022-09-18, Amendment 39-22038 (87 FR 31097, May 23, 2022)
(AD 2022-09-18). AD 2022-09-18 was prompted by a determination that,
during approach, landings, and go-arounds, as a result of 5G C-Band
interference, certain airplane systems may not properly function,
resulting in increased flightcrew workload while on approach with the
flight director, autothrottle, or autopilot engaged. AD 2022-09-18
requires revising the limitations and operating procedures sections of
the existing AFM to incorporate specific operating procedures for,
depending on the airplane model, ILS approaches, non-precision
approaches, ground spoiler deployment, and go-around and missed
approaches, when in the presence of 5G C-Band interference as
identified by NOTAMs. The agency issued AD 2022-09-18 to address 5G C-
Band interference that could result in increased flightcrew workload
and could lead to reduced ability of the flightcrew to maintain safe
flight and landing of the airplane.
Actions Since AD 2022-09-18 Was Issued
Since issuing AD 2022-09-18, the FAA determined that additional
[[Page 27751]]
limitations are needed due to the continued deployment of new 5G C-Band
base stations whose signals are expected to cover most of the
contiguous United States at transmission frequencies between 3.7-3.98
GHz. Therefore, the FAA issued an NPRM, Docket No. FAA-2022-1647 (88 FR
1520, January 11, 2023) (the NPRM), proposing to supersede AD 2021-23-
12. In the NPRM, the FAA proposed to retain most of the operational
prohibitions required by AD 2021-23-12 until June 30, 2023; on or
before June 30, 2023, operators would be required to revise their
existing AFM to prohibit these operations unless the airplane has a
radio altimeter meeting proposed minimum performance levels (a defined
power spectral density (PSD) curve as well as a defined aggregate
spurious emission level) and is operating at a 5G C-Band mitigated
airport (5G CMA). In the NPRM, the FAA also proposed to require all
airplanes operating under 14 CFR part 121 to have a radio altimeter
meeting the proposed minimum performance standards by February 1, 2024.
Since the NPRM was published, the FAA has determined that a PSD
curve is a more appropriate method to define performance than a single
fixed emission level. The proposed PSD curve more accurately reflects
differences in radio altimeter susceptibility to interfering emissions
at different altitude levels. The FAA plans to issue guidance on how to
show compliance with both the fundamental PSD curve and spurious PSD
curve, including the data to be submitted, for the FAA to approve the
method used.
AD 2022-09-18 relies on the FAA's use of NOTAMs to identify 5G C-
band interference at certain airports in the U.S. airspace. As
explained in more detail in the NPRM, those NOTAMs are no longer the
best means of communicating the location of the 5G C-Band environment.
Therefore, this proposed AD would retain the AFM limitations and
operating procedures required by AD 2022-09-18 until June 30, 2023. On
or before June 30, 2023, this proposed AD would require operators to
replace the limitations with limitations prohibiting the same
operations, except the prohibitions would not be tied to NOTAMs but
instead would depend on whether the airplane is operated at a 5G CMA as
identified by an FAA Domestic Notice. Because the applicable 5G C-Band
Interference operating procedures required by AD 2022-09-18 reference
AD 2021-23-12 for certain prohibited ILS approaches, this proposed AD
would require operators to replace the procedure with an operating
procedure containing the same information, except it would list the
specific prohibited ILS approaches.
FAA's Determination
The FAA is issuing this NPRM after determining that the unsafe
condition described previously is likely to exist or develop on other
products of the same type design.
Proposed AD Requirements in This NPRM
This proposed AD would retain the AFM revisions required by AD
2022-09-18 until June 30, 2023. On or before June 30, 2023, this
proposed AD would require replacing those AFM revisions with
limitations requiring the same procedures for ILS approaches, non-
precision approaches, ground spoiler deployment, and go-around and
missed approaches, at all airports for non-radio altimeter tolerant
airplanes. For radio altimeter tolerant airplanes, the procedures would
not be required at 5G CMAs as identified in an FAA Domestic Notice. The
minimum performance levels in this proposed AD for determining whether
an airplane is radio altimeter tolerant are the same minimum
performance levels proposed in the NPRM, except the FAA has replaced
the proposed fixed emission level with a proposed PSD curve emission
threshold that more accurately reflects differences in radio altimeter
susceptibility to interfering emissions at different altitude levels.
Paragraph (m)(3) of this proposed AD specifies that AMOCs approved
for AD 2021-23-12 providing relief for specific radio altimeter
installations would be approved as AMOCs for the requirements specified
in paragraph (h) of this proposed AD until June 30, 2023.
Interim Action
The FAA considers that this AD, if adopted as proposed, would be an
interim action. Once the Technical Standard Order (TSO) standard for
radio altimeters is established, which will follow the existing
international technical consensus on the establishment of the minimum
operational performance standards (MOPS), the FAA anticipates that the
MOPS will be incorporated into the TSO. The FAA also anticipates that
aircraft incorporating equipment approved under the new Radio Altimeter
TSO will be able to operate in both 5G CMAs and non-5G CMAs with no 5G
C-Band-related AFM limitations. Once a new radio altimeter TSO is
developed, approved, and available, the FAA might consider additional
rulemaking.
Costs of Compliance
The cost information below describes the costs to change the AFM.
Although this proposed AD would largely maintain the AFM limitations
currently required by AD 2022-09-18, the FAA acknowledges that this
proposed AD may also impose costs on some aircraft operators from
having to change their conduct to comply with the amended AFM. However,
the FAA lacks the data necessary to quantify the costs associated with
aircraft operators changing their conduct. The FAA is seeking public
comment on these costs so the agency can more fully account for the
impact of this regulatory action.
The FAA estimates that this AD, if adopted as proposed, would
affect 476 airplanes of U.S. registry.\1\ The FAA estimates the
following costs to comply with this proposed AD:
---------------------------------------------------------------------------
\1\ This is the number of Boeing Model 707, 717, and 727
airplanes; Model DC-8, DC-9, and DC-10 airplanes; Model MD 10 and
MD-11 airplanes; Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83
(MD-83), DC-9-87 (MD-87), and MD-88 airplanes; and Model MD 90-30
airplanes on the FAA's registry as of December 1, 2022.
[[Page 27752]]
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
AFM revision (retained actions from AD 1 work-hour x $85 per $0 $85 $40,460
2022-09-18). hour \2\ = $85.
New AFM revisions (new proposed 1 work-hour x $85 per 0 85 \3\ 40,460
action). hour = $85.
----------------------------------------------------------------------------------------------------------------
Authority for This Rulemaking
---------------------------------------------------------------------------
\2\ The labor rate of $85 per hour is the average wage rate for
an aviation mechanic.
\3\ The estimated cost for this revision would not constitute a
significant economic impact (even for small entities) because $85 is
a minimal cost compared to the regular costs of maintaining and
operating a 707, 717, 727, DC-8, DC-9, DC-10, MD 10, MD-11, DC-9-81,
DC-9-82, DC-9-83, DC-9-87, MD-88, or MD-90-30 transport category
airplane.
---------------------------------------------------------------------------
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII, Aviation Programs,
describes in more detail the scope of the Agency's authority.
The FAA is issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: General requirements.
Under that section, Congress charges the FAA with promoting safe flight
of civil aircraft in air commerce by prescribing regulations for
practices, methods, and procedures the Administrator finds necessary
for safety in air commerce. This regulation is within the scope of that
authority because it addresses an unsafe condition that is likely to
exist or develop on products identified in this rulemaking action.
Regulatory Findings
The FAA has determined that this proposed AD would not have
federalism implications under Executive Order 13132. This proposed AD
would not have a substantial direct effect on the States, on the
relationship between the national Government and the States, or on the
distribution of power and responsibilities among the various levels of
government.
For the reasons discussed above, I certify that the proposed
regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Would not affect intrastate aviation in Alaska, and
(3) Would not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by:
0
a. Removing Airworthiness Directive (AD) 2022-09-18, Amendment 39-22038
(87 FR 31097, May 23, 2022), and
0
b. Adding the following new AD:
The Boeing Company Airplanes: Docket No. FAA-2023-0923; Project
Identifier AD-2022-01432-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by May 23, 2023.
(b) Affected ADs
This AD replaces AD 2022-09-18, Amendment 39-22038 (87 FR 31097,
May 23, 2022) (AD 2022-09-18).
(c) Applicability
This AD applies to all The Boeing Company airplanes identified
in paragraphs (c)(1) through (9) of this AD, certificated in any
category.
(1) Model 707-100 Long Body, -200, -100B Long Body, and -100B
Short Body series airplanes, and Model 707-300, -300B, -300C, and -
400 series airplanes.
(2) Model 717-200 airplanes.
(3) Model 727, 727C, 727-100, 727-100C, 727-200, and 727-200F
series airplanes.
(4) Model DC-8-11, DC-8-12, DC-8-21, DC-8-31, DC-8-32, DC-8-33,
DC-8-41, DC-8-42, DC-8-43, DC-8-51, DC-8-52, DC-8-53, DC-8-55, DC-
8F-54, DC-8F-55, DC-8-61, DC-8-62, DC-8-63, DC-8-61F, DC-8-62F, DC-
8-63F, DC-8-71, DC-8-72, DC-8-73, DC-8-71F, DC-8-72F, and DC-8-73F
airplanes.
(5) Model DC-9-11, DC-9-12, DC-9-13, DC-9-14, DC-9-15, DC-9-15F,
DC-9-21, DC-9-31, DC-9-32, DC-9-32 (VC-9C), DC-9-32F, DC-9-32F (C-
9A, C-9B), DC-9-33F, DC-9-34, DC-9-34F, DC-9-41, and DC-9-51
airplanes.
(6) Model DC-10-10, DC-10-10F, DC-10-15, DC-10-30, DC-10-30F
(KC-10A and KDC-10), DC-10-40, and DC-10-40F airplanes.
(7) Model MD-10-10F and MD-10-30F airplanes.
(8) Model MD-11 and MD-11F airplanes.
(9) Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-
9-87 (MD-87), MD-88, and MD-90-30 airplanes.
(d) Subject
Air Transport Association (ATA) of America Code 34, Navigation.
(e) Unsafe Condition
This AD was prompted by a determination that radio altimeters
cannot be relied upon to perform their intended function if they
experience interference from wireless broadband operations in the
3.7-3.98 GHz frequency band (5G C-Band), and a determination that
during approach, landings, and go-arounds, as a result of this
interference, certain airplane systems may not properly function,
resulting in increased flightcrew workload while on approach with
the flight director, autothrottle, or autopilot engaged. The FAA is
issuing this AD to address 5G C-Band interference that could result
in increased flightcrew workload and could lead to reduced ability
of the flightcrew to maintain safe flight and landing of the
airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Definitions
(1) For purposes of this AD, a ``5G C-Band mitigated airport''
(5G CMA) is an airport at which the telecommunications companies
have agreed to voluntarily limit their 5G deployment at the request
of the FAA, as identified by an FAA Domestic Notice.
(2) For purposes of this AD, a ``radio altimeter tolerant
airplane'' is one for which the radio altimeter, as installed,
demonstrates the tolerances specified in paragraphs (g)(2)(i) and
(ii) of this AD, using a method approved by the FAA.
(i) Tolerance to radio altimeter interference, for the
fundamental emissions (3.7-3.98 GHz), at or above the power spectral
density (PSD) curve threshold specified in figure 1 to paragraph
(g)(2)(i) of this AD.
BILLING CODE 4910-13-P
[[Page 27753]]
Figure 1 to paragraph (g)(2)(i)--Fundamental Effective Isotropic PSD
at Outside Interface of Aircraft Antenna
[GRAPHIC] [TIFF OMITTED] TP03MY23.026
(ii) Tolerance to radio altimeter interference, for the spurious
emissions (4.2-4.4 GHz), at or above the PSD curve threshold
specified in figure 2 to paragraph (g)(2)(ii) of this AD.
Figure 2 to paragraph (g)(2)(ii)--Spurious Effective Isotropic PSD
at Outside Interface of Aircraft Antenna
[[Page 27754]]
[GRAPHIC] [TIFF OMITTED] TP03MY23.027
(3) For purposes of this AD, a ``non-radio altimeter tolerant
airplane'' is one for which the radio altimeter, as installed, does
not demonstrate the tolerances specified in paragraphs (g)(2)(i) and
(ii) of this AD.
(h) Retained Airplane Flight Manual (AFM) Revision-Limitations
This paragraph restates the requirements of paragraph (g) of AD
2022-09-18.
(1) For airplanes identified in paragraphs (c)(1) and (c)(3)
through (6) of this AD: Within 2 days after May 23, 2022 (the
effective date of AD 2022-09-18), revise the Limitations Section of
the existing AFM to include the information specified in figure 3 to
paragraph (h)(1) of this AD. This may be done by inserting a copy of
figure 3 to paragraph (h)(1) of this AD into the existing AFM.
Figure 3 to paragraph (h)(1)--AFM Limitations Revision for Model
707, 727, DC-8, DC-9 (except DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-
83 (MD-83), and DC-9-87 (MD-87)), and DC-10
[[Page 27755]]
[GRAPHIC] [TIFF OMITTED] TP03MY23.028
(2) For airplanes identified in paragraphs (c)(2), (7), and (8)
of this AD: Within 2 days after May 23, 2022 (the effective date of
AD 2022-09-18), revise the Limitations Section of the existing AFM
to include the information specified in figure 4 to paragraph (h)(2)
of this AD. This may be done by inserting a copy of figure 4 to
paragraph (h)(2) of this AD into the Limitations Section of the
existing AFM.
Figure 4 to paragraph (h)(2)--AFM Limitations Revision for Model
717, MD-10, and MD-11
[GRAPHIC] [TIFF OMITTED] TP03MY23.029
(3) For airplanes identified in paragraph (c)(9) of this AD:
Within 2 days after May 23, 2022 (the effective date of AD 2022-09-
18), revise the Limitations Section of the existing AFM to include
the information specified in figure 5 to paragraph (h)(3) of this
AD. This may be done by inserting a copy of figure 5 to paragraph
(h)(3) of this AD into the Limitations Section of the existing AFM.
Figure 5 to paragraph (h)(3)--AFM Limitations Revision for Model DC-
9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), MD-
88, and MD-90-30
[[Page 27756]]
[GRAPHIC] [TIFF OMITTED] TP03MY23.030
(i) Retained AFM Revision-Operating Procedures
This paragraph restates the requirements of paragraph (h) of AD
2022-09-18.
(1) For airplanes identified in paragraphs (c)(1) and (3)
through (6) of this AD: Within 2 days after May 23, 2022 (the
effective date of AD 2022-09-18), revise the Operating Procedures
Section of the existing AFM to include the information specified in
figure 6 to paragraph (i)(1) of this AD. This may be done by
inserting a copy of figure 6 to paragraph (i)(1) of this AD into the
Operating Procedures Section of the existing AFM.
Figure 6 to paragraph (i)(1)--AFM Operating Procedures Revision for
Model 707, 727, DC-8, DC-9 (except DC-9-81 (MD-81), DC-9-82 (MD-82),
DC-9-83 (MD-83), and DC-9-87 (MD-87)), and DC-10
[GRAPHIC] [TIFF OMITTED] TP03MY23.031
(2) For airplanes identified in paragraph (c)(2) of this AD:
Within 2 days after May 23, 2022 (the effective date of AD 2022-09-
18), revise the Operating Procedures Section of the existing AFM to
include the information specified in figure 7 to paragraph (i)(2) of
this AD. This may be done by inserting a copy of figure 7 to
paragraph (i)(2) of this AD into the Operating Procedures Section of
the existing AFM.
Figure 7 to paragraph (i)(2)--AFM Operating Procedures Revision for
Model 717
[[Page 27757]]
[GRAPHIC] [TIFF OMITTED] TP03MY23.032
(3) For airplanes identified in paragraph (c)(7) of this AD:
Within 2 days after May 23, 2022 (the effective date of AD 2022-09-
18), revise the Operating Procedures Section of the existing AFM to
include the information specified in figure 8 to paragraph (i)(3) of
this AD. This may be done by inserting a copy of figure 8 to
paragraph (i)(3) of this AD into the Operating Procedures Section of
the existing AFM.
Figure 8 to paragraph (i)(3)--AFM Operating Procedures Revision for
Model MD-10
[[Page 27758]]
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[[Page 27759]]
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[[Page 27760]]
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[[Page 27761]]
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[[Page 27762]]
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(4) For airplanes identified in paragraph (c)(8) of this AD:
Within 2 days after the effective date of this AD, revise the
Operating Procedures Section of the existing AFM to include the
information specified in figure 9 to paragraph (i)(4) of this AD.
This may be
[[Page 27763]]
done by inserting a copy of figure 9 to paragraph (i)(4) of this AD
into the Operating Procedures Section of the existing AFM.
Figure 9 to paragraph (i)(4)--AFM Operating Procedures Revision for
Model MD-11
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[[Page 27764]]
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[[Page 27765]]
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[[Page 27766]]
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[[Page 27767]]
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[[Page 27768]]
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(5) For airplanes identified in paragraph (c)(9) of this AD:
Within 2 days after the effective date of this AD, revise the
Operating Procedures Section of the existing AFM to include the
information specified in figure 10 to paragraph (i)(5) of this AD.
This may be done by inserting a copy of figure 10 to paragraph
(i)(5) of this AD into the Operating Procedures Section of the
existing AFM.
Figure 10 to paragraph (i)(5)--AFM Operating Procedures Revision for
Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87
(MD-87), MD-88, and MD-90-30
[[Page 27769]]
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(j) New Requirement: AFM Limitations Revision for Non-Radio Altimeter
Tolerant Airplanes
(1) For non-radio altimeter tolerant airplanes identified in
paragraphs (c)(1) and (c)(3) through (6) of this AD, do the actions
specified in paragraphs (j)(1)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the Limitations Section
of the existing AFM to include the information specified in figure
11 to paragraph (j)(1) of this AD. This may be done by inserting a
copy of figure 11 to paragraph (j)(1) of this AD into the existing
AFM. Incorporating the AFM revision required by this paragraph
terminates the AFM revision required by paragraph (h)(1) of this AD.
(ii) Before further flight after incorporating the limitations
specified in figure 11 to paragraph (j)(1) of this AD, remove the
AFM revision required by paragraph (h)(1) of this AD.
Figure 11 to paragraph (j)(1)--AFM Limitations Revision for Model
707, 727, DC-8, DC-9 (except DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-
83 (MD-83), and DC-9-87 (MD-87)), and DC-10
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(2) For non-radio altimeter tolerant airplanes identified in
paragraphs (c)(2), (7), and (8) of this AD, do the actions specified
in paragraphs (j)(2)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the Limitations Section
of the existing AFM to include the information specified in figure
12 to paragraph (j)(2) of this AD. This may be done by inserting a
copy of figure 12 to paragraph (j)(2) of this AD into the existing
AFM. Incorporating the AFM revision required by this paragraph
terminates the AFM revision required by paragraph (h)(2) of this AD.
(ii) Before further flight after incorporating the limitations
specified in figure 12 to paragraph (j)(2) of this AD, remove the
AFM revision required by paragraph (h)(2) of this AD.
Figure 12 to paragraph (j)(2)--AFM Limitations Revision for Model
717, MD-10, and MD-11
[[Page 27770]]
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(3) For non-radio altimeter tolerant airplanes identified in
paragraph (c)(9) of this AD, do the actions specified in paragraphs
(j)(3)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the Limitations Section
of the existing AFM to include the information specified in figure
13 to paragraph (j)(3) of this AD. This may be done by inserting a
copy of figure 13 to paragraph (j)(3) of this AD into the existing
AFM. Incorporating the AFM revision required by this paragraph
terminates the AFM revision required by paragraph (h)(3) of this AD.
(ii) Before further flight after incorporating the limitations
specified in figure 13 to paragraph (j)(3) of this AD, remove the
AFM revision required by paragraph (h)(3) of this AD.
Figure 13 to paragraph (j)(3)--AFM Limitations Revision for Model
DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87),
MD-88, and MD-90-30
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(k) New Requirement: AFM Limitations Revision for Radio Altimeter
Tolerant Airplanes
(1) For radio altimeter tolerant airplanes identified in
paragraphs (c)(1) and (c)(3) through (6) of this AD, do the actions
specified in paragraphs (k)(1)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the Limitations Section
of the existing AFM to include the information specified in figure
14 to paragraph (k)(1) of this AD. This may be done by inserting a
copy of figure 14 to paragraph (k)(1) of this AD into the existing
AFM. Incorporating the AFM revision required by this paragraph
terminates the AFM revision required by paragraph (h)(1) of this AD.
(ii) Before further flight after incorporating the limitations
specified in figure 14 to paragraph (k)(1) of this AD, remove the
AFM revision required by paragraph (h)(1) of this AD.
Figure 14 to paragraph (k)(1)--AFM Limitations Revision for Model
707, 727, DC-8, DC-9 (except DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-
83 (MD-83), and DC-9-87 (MD-87)), and DC-10
[[Page 27771]]
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(2) For radio altimeter tolerant airplanes identified in
paragraphs (c)(2), (7), and (8) of this AD, do the actions specified
in paragraphs (k)(2)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the Limitations Section
of the existing AFM to include the information specified in figure
15 to paragraph (k)(2) of this AD. This may be done by inserting a
copy of figure 15 to paragraph (k)(2) of this AD into the existing
AFM. Incorporating the AFM revision required by this paragraph
terminates the AFM revision required by paragraph (h)(2) of this AD.
(ii) Before further flight after incorporating the limitations
specified in figure 15 to paragraph (k)(2) of this AD, remove the
AFM revision required by paragraph (h)(2) of this AD.
Figure 15 to paragraph (k)(2)--AFM Limitations Revision for Model
717, MD-10, and MD-11
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(3) For radio altimeter tolerant airplanes identified in
paragraph (c)(9) of this AD, do the actions specified in paragraphs
(k)(3)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the Limitations Section
of the existing AFM to include the information specified in figure
16 to paragraph (k)(3) of this AD. This may be done by inserting a
copy of figure 16 to paragraph (k)(3) of this AD into the existing
AFM. Incorporating the AFM revision required by this paragraph
terminates the AFM revision required by paragraph (h)(3) of this AD.
(ii) Before further flight after incorporating the limitations
specified in figure 16 to paragraph (k)(3) of this AD, remove the
AFM revision required by paragraph (h)(3) of this AD.
Figure 16 to paragraph (k)(3)--AFM Limitations Revision for Model
DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87),
MD-88, and MD-90-30
[[Page 27772]]
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(l) New Requirement: AFM Operating Procedures Revision
(1) For airplanes identified in paragraphs (c)(1) and (3)
through (6) of this AD, do the actions specified in paragraphs
(l)(1)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the Operating Procedures
Section of the existing AFM to include the information specified in
figure 17 to paragraph (l)(1) of this AD. This may be done by
inserting a copy of figure 17 to paragraph (l)(1) of this AD into
the Operating Procedures Section of the existing AFM. Incorporating
the AFM revision required by this paragraph terminates the AFM
revision required by paragraph (i)(1) of this AD.
(ii) Before further flight after incorporating the limitations
specified in figure 17 to paragraph (l)(1) of this AD, remove the
AFM revision required by paragraph (i)(1) of this AD.
Figure 17 to paragraph (1)(1)--AFM Operating Procedures Revision for
Model 707, 727, DC-8, DC-9 (except DC-9-81 (MD-81), DC-9-82 (MD-82),
DC-9-83 (MD-83), and DC-9-87 (MD-87)), and DC-10
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(2) For airplanes identified in paragraph (c)(2) of this AD, do
the actions specified in paragraphs (l)(2)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the Operating Procedures
Section of the existing AFM to include the information specified in
figure 18 to paragraph (l)(2) of this AD. This may be done by
inserting a copy of figure 18 to paragraph (l)(2) of this AD into
the Operating Procedures Section of the existing AFM. Incorporating
the AFM revision required by this paragraph terminates the AFM
revision required by paragraph (i)(2) of this AD.
(ii) Before further flight after incorporating the limitations
specified in figure 18 to paragraph (l)(2) of this AD, remove the
AFM revision required by paragraph (i)(2) of this AD.
Figure 18 to paragraph (l)(2)--AFM Operating Procedures Revision for
Model 717
[[Page 27773]]
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(3) For airplanes identified in paragraph (c)(7) of this AD, do
the actions specified in paragraphs (l)(3)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the Operating Procedures
Section of the existing AFM to include the information specified in
figure 19 to paragraph (l)(3) of this AD. This may be done by
inserting a copy of figure 19 to paragraph (l)(3) of this AD into
the Operating Procedures Section of the existing AFM. Incorporating
the AFM revision required by this paragraph terminates the AFM
revision required by paragraph (i)(3) of this AD.
(ii) Before further flight after incorporating the limitations
specified in figure 19 to paragraph (l)(3) of this AD, remove the
AFM revision required by paragraph (i)(3) of this AD.
Figure 19 to paragraph (l)(3)--AFM Operating Procedures Revision for
Model MD-10
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[[Page 27775]]
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[[Page 27776]]
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[[Page 27777]]
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[[Page 27778]]
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(4) For airplanes identified in paragraph (c)(8) of this AD, do
the actions specified in paragraphs (l)(4)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the Operating Procedures
Section of the existing AFM to include the information specified in
figure 20 to paragraph (l)(4) of this AD. This may be done by
inserting a copy of figure 20 to paragraph (l)(4) of this AD into
the Operating Procedures Section of the existing AFM. Incorporating
the AFM revision required by this paragraph terminates the AFM
revision required by paragraph (i)(4) of this AD.
(ii) Before further flight after incorporating the limitations
specified in figure 20 to paragraph (l)(4) of this AD, remove the
AFM revision required by paragraph (i)(4) of this AD.
Figure 20 to paragraph (l)(4)--AFM Operating Procedures Revision for
Model MD-11
[[Page 27780]]
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[[Page 27781]]
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[[Page 27782]]
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[[Page 27783]]
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[[Page 27784]]
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[[Page 27785]]
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(5) For airplanes identified in paragraph (c)(9) of this AD, do
the actions specified in paragraphs (l)(5)(i) and (ii) of this AD.
(i) On or before June 30, 2023, revise the Operating Procedures
Section of the existing AFM to include the information specified in
figure 21 to paragraph (l)(5) of this AD. This may be done by
inserting a copy of figure 21 to paragraph (l)(5) of this AD into
the Operating Procedures Section of the existing AFM. Incorporating
the AFM revision required by this paragraph terminates the AFM
revision required by paragraph (i)(5) of this AD.
(ii) Before further flight after incorporating the limitations
specified in figure 21 to paragraph (l)(5) of this AD, remove the
AFM revision required by paragraph (i)(5) of this AD.
Figure 21 to paragraph (l)(5)--AFM Operating Procedures Revision for
Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87
(MD-87), MD-88, and MD-90-30
[[Page 27786]]
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(m) Alternative Methods of Compliance (AMOCs)
(1) The Manager, Operational Safety Branch, FAA, has the
authority to approve AMOCs for this AD, if requested using the
procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19,
send your request to your principal inspector or responsible Flight
Standards Office, as appropriate. If sending information directly to
the manager of the Operational Safety Branch, send it to the
attention of the person identified in paragraph (n) of this AD.
Information may be emailed to: [email protected].
(2) Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the responsible Flight Standards Office.
(3) AMOCs approved for AD 2021-23-12, Amendment 39-21810 (86 FR
69984, December 9, 2021) providing relief for specific radio
altimeter installations are approved as AMOCs for the requirements
specified in paragraph (h) of this AD until June 30, 2023.
(n) Related Information
For more information about this AD, contact Brett Portwood,
Continued Operational Safety Technical Advisor, COS Program
Management Section, Operational Safety Branch, FAA, 3960 Paramount
Boulevard, Lakewood, CA 90712-4137; phone: 817-222-5390; email:
[email protected].
(o) Material Incorporated by Reference
None.
Issued on April 28, 2023.
Michael Linegang,
Acting Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2023-09431 Filed 5-1-23; 4:15 pm]
BILLING CODE 4910-13-C
