Airworthiness Directives; The Boeing Company Airplanes, 40023-40058 [2023-13155]
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Federal Register / Vol. 88, No. 118 / Wednesday, June 21, 2023 / Rules and Regulations
40023
(k) Alternative Methods of Compliance
(AMOCs)
phone: 817–222–5390; email:
operationalsafety@faa.gov.
(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 (l) 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.
(m) Material Incorporated by Reference
None.
(l) 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;
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Issued on June 9, 2023.
Michael Linegang,
Acting Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2023–13152 Filed 6–16–23; 11:15 am]
BILLING CODE 4910–13–C
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2023–0923; Project
Identifier AD–2022–01432–T; Amendment
39–22473; AD 2023–12–15]
RIN 2120–AA64
Airworthiness Directives; The Boeing
Company Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
The FAA is superseding
Airworthiness Directive (AD) 2022–09–
SUMMARY:
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18, which applied 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
airplanes; and Model MD 90–30
airplanes. AD 2022–09–18 required
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 interference
from wireless broadband operations in
the 3.7–3.98 GHz frequency band (5G CBand) 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 stations
whose signals are expected to cover
most of the contiguous United States at
transmission frequencies between 3.7–
3.98 GHz. This AD requires revising the
limitations and operating procedures
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Figure 7 to paragraph (j)—AFM Revision for
Radio Altimeter Tolerant Airplanes
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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 issuing this AD to address
the unsafe condition on these products.
DATES: This AD is effective June 21,
2023.
ADDRESSES: 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
final rule, any comments received, and
other information. The address for
Docket Operations is U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue SE,
Washington, DC 20590.
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:
operationalsafety@faa.gov.
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to supersede AD 2022–09–18,
Amendment 39–22038 (87 FR 31097,
May 23, 2022) (AD 2022–09–18). AD
2022–09–18 applied to all The Boeing
Company (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. The NPRM published in the
Federal Register on May 3, 2023 (88 FR
27749). The NPRM was prompted by a
determination that radio altimeters
cannot be relied upon to perform their
intended function if they experience 5G
C-Band interference, 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.
In the NPRM, the FAA proposed to
retain the AFM revisions required by
AD 2022–09–18 until June 30, 2023. On
or before June 30, 2023, the FAA
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proposed to require replacing those
AFM revisions with limitations
requiring the same procedures for,
depending on the airplane model, ILS
approaches, non-precision approaches,
ground spoiler deployment, and goaround and missed approaches, at all
airports for non-radio altimeter tolerant
airplanes. For radio altimeter tolerant
airplanes, the FAA proposed that the
procedures would not be required at 5G
C-Band mitigated airports (5G CMAs) as
identified in an FAA Domestic Notice.
The FAA proposed 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.
Discussion of Final Airworthiness
Directive
Comments
The FAA provided the public with an
opportunity to comment on the
proposed AD and received comments
from three commenters. The following
presents the comments received on the
NPRM and the FAA’s response to each
comment.
Support for NPRM
Boeing and the Air Line Pilots
Association, International (ALPA),
supported the NPRM without change.
The supportive comments from ALPA
included additional viewpoints without
a suggestion specific to the AD or a
request the FAA can act on. These
comments are outside the scope of this
final rule.
Request To Extend Compliance Time
Comment summary: American
Airlines expressed concern regarding
the compliance time for the proposed
actions and requested the FAA revise
the AD to provide a minimum of 30
days from the effective date of the AD.
FAA response: The FAA understands
the commenter’s concern and made
every effort to publish this AD as soon
as possible. After refraining from
operating at their FCC-authorized levels
for a year and a half, wireless companies
are now able to operate at higher levels,
yet still not at the levels authorized.
Specifically, wireless companies expect
to operate their networks in urban areas
with minimal restrictions due to the
completion of retrofits. Additionally,
the FAA anticipates 19 additional
telecommunication companies will
begin transmitting in the C-Band after
June 30, 2023. Although the FAA
continues to work with the companies
that intend to transmit in the 3.7–3.98–
GHz band near 5G CMAs, the FAA has
no agreement with those companies to
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provide the FAA with tower locations
and other information necessary to
support the current NOTAM/AMOC
process. Therefore, the FAA will not be
able to extend the June 30, 2023, date.
Conclusion
The FAA reviewed the relevant data,
considered any comments received, and
determined that air safety requires
adopting this AD as proposed.
Accordingly, the FAA is issuing this AD
to address the unsafe condition on these
products. This AD is adopted as
proposed in the NPRM.
Interim Action
The FAA considers this AD to 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. Once a new radio altimeter TSO
is developed, approved, and available,
the FAA might consider additional
rulemaking.
Effective Date
Section 553(d) of the Administrative
Procedure Act (APA) (5 U.S.C. 551 et
seq.) requires publication of a rule not
less than 30 days before its effective
date. However, section 553(d)
authorizes agencies to make rules
effective in less than 30 days when the
agency finds ‘‘good cause.’’ Radio
altimeters cannot be relied upon to
perform their intended function if they
experience interference from wireless
broadband operations in the 5G C-Band.
This interference can cause other
airplane systems to not properly
function, resulting in increased
flightcrew workload while on approach
with the flight director, autothrottle, or
autopilot engaged. To address this
unsafe condition, the actions required
by this AD must be accomplished before
the compliance date of June 30, 2023.
The FAA based this date on the changes
to the 5G C-Band environment
beginning on July 1, 2023. These
changes include increased wireless
broadband deployment and
transmissions closer to the parameters
authorized by the FCC. The earlier
operators learn of the requirements in
this AD, the earlier they can take action
to ensure compliance. An effective date
less than 30 days would ensure the AD
is codified earlier, thereby increasing
awareness of its requirements.
Therefore, the FAA finds that good
cause exists pursuant to 5 U.S.C. 553(d)
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for making this amendment
immediately effective.
Costs of Compliance
The cost information below describes
the costs to change the AFM. Although
this AD largely maintains the AFM
limitations currently required by AD
2022–09–18, the FAA acknowledges
that this 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
40025
associated with aircraft operators
changing their conduct.
The FAA estimates that this AD
affects 476 airplanes of U.S. registry.
The FAA estimates the following costs
to comply with this AD:
ESTIMATED COSTS
Action
Labor cost
AFM revision (retained actions from AD 2022–09–18)
New AFM revisions (new action) ..................................
1 work-hour × $85 per hour 1 = $85
1 work-hour × $85 per hour = $85 ..
Cost per
product
Parts cost
$0
0
Cost on U.S.
operators
$85
85
$40,460
2 40,460
1 The
labor rate of $85 per hour is the average wage rate for an aviation mechanic.
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.
2 The
Authority for This Rulemaking
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.
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Regulatory Findings
This AD will not have federalism
implications under Executive Order
13132. This AD will 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 this AD:
(1) Is not a ‘‘significant regulatory
action’’ under Executive Order 12866,
(2) Will not affect intrastate aviation
in Alaska, and
(3) Will not have a significant
economic impact, positive or negative,
on a substantial number of small entities
under the criteria of the Regulatory
Flexibility Act.
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List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
The Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA amends 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:
■
■
2023–12–15 The Boeing Company:
Amendment 39–22473; Docket No.
FAA–2023–0923; Project Identifier AD–
2022–01432–T.
(a) Effective Date
This airworthiness directive (AD) is
effective June 21, 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–
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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
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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.
(ii) Tolerance to radio altimeter
interference, for the spurious emissions (3.7–
3.98 GHz), at or above the PSD curve
threshold specified in figure 2 to paragraph
(g)(2)(ii) of this AD.
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BILLING CODE 4910–13–P
Figure 1 to paragraph (g)(2)(i)—Fundamental
Effective Isotropic PSD at Outside Interface
of Aircraft Antenna
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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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(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
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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.
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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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9–82 (MD–82), DC–9–83 (MD–83), and DC–
9–87 (MD–87)), and DC–10
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.
ER21JN23.123</GPH>
(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
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Figure 3 to paragraph (h)(1)—AFM
Limitations Revision for Model 707, 727,
DC–8, DC–9 (except DC–9–81 (MD–81), DC–
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83), DC–9–87 (MD–87), MD–88, and MD–
90–30
(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.
ER21JN23.125</GPH>
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–
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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.
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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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Figure 8 to paragraph (i)(3)—AFM Operating
Procedures Revision for Model MD–10
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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
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Jkt 259001
include the information specified in figure 9
to paragraph (i)(4) of this AD. This may be
done by inserting a copy of figure 9 to
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40035
paragraph (i)(4) of this AD into the Operating
Procedures Section of the existing AFM.
E:\FR\FM\21JNR1.SGM
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Figure 9 to paragraph (i)(4)—AFM
Operating Procedures Revision for Model
MD–11
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16:27 Jun 20, 2023
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16:27 Jun 20, 2023
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40040
(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
(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.
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Federal Register / Vol. 88, No. 118 / Wednesday, June 21, 2023 / Rules and Regulations
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
(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.
ER21JN23.140</GPH>
Figure 11 to paragraph (j)(1)—AFM
Limitations Revision for Model 707, 727,
DC–8, DC–9 (except DC–9–81 (MD–81), DC–
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40042
Federal Register / Vol. 88, No. 118 / Wednesday, June 21, 2023 / Rules and Regulations
83), DC–9–87 (MD–87), MD–88, and MD–
90–30
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
(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.
ER21JN23.142</GPH>
(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
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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–
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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
(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.
ER21JN23.144</GPH>
(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
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Figure 15 to paragraph (k)(2)—AFM
Limitations Revision for Model 717, MD–
10, and MD–11
Federal Register / Vol. 88, No. 118 / Wednesday, June 21, 2023 / Rules and Regulations
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
(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
ER21JN23.146</GPH>
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.
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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
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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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Jkt 259001
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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16:27 Jun 20, 2023
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16:27 Jun 20, 2023
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VerDate Sep<11>2014
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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.
PO 00000
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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.
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ER21JN23.152</GPH>
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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
40051
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Figure 20 to paragraph (l)(4)—AFM Operating
Procedures Revision for Model MD–11
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16:27 Jun 20, 2023
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16:27 Jun 20, 2023
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Jkt 259001
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.
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(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.
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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
40057
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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–
(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: 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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(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.
(o) Material Incorporated by Reference
None.
VerDate Sep<11>2014
16:27 Jun 20, 2023
Jkt 259001
83), DC–9–87 (MD–87), MD–88, and MD–
90–30
Issued on June 9, 2023.
Michael Linegang,
Acting Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2023–13155 Filed 6–16–23; 11:15 am]
BILLING CODE 4910–13–C
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2023–0672; Project
Identifier AD–2022–01429–T; Amendment
39–22470; AD 2023–12–12]
RIN 2120–AA64
Airworthiness Directives; The Boeing
Company Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
The FAA is superseding
Airworthiness Directive (AD) 2022–04–
05, which applied to all The Boeing
Company Model 757 and 767 airplanes.
AD 2022–04–05 required revising the
limitations and operating procedures
sections of the existing airplane flight
manual (AFM) to incorporate specific
operating procedures for landing
distance calculations, instrument
landing system (ILS) approaches, nonprecision approaches, speedbrake
deployment, and go-around and missed
approaches, when in the presence of
SUMMARY:
PO 00000
Frm 00064
Fmt 4700
Sfmt 4700
interference from wireless broadband
operations in the 3.7–3.98 GHz
frequency band (5G C-Band) as
identified by Notices to Air Missions
(NOTAMs). Since the FAA issued AD
2022–04–05, 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 AD requires revising the
limitations and operating procedures
sections of the existing AFM to
incorporate specific operating
procedures for landing distance
calculations, ILS approaches, nonprecision approaches, speedbrake
deployment, and go-around and missed
approaches, due to the presence of 5G
C-Band interference. The FAA is issuing
this AD to address the unsafe condition
on these products.
DATES: This AD is effective June 21,
2023.
AD Docket: You may
examine the AD docket at
regulations.gov under Docket No. FAA–
2023–0672; 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
final rule, any comments received, and
other information. The address for
Docket Operations is U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
ADDRESSES:
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ER21JN23.159</GPH>
40058
]]>Agencies
[Federal Register Volume 88, Number 118 (Wednesday, June 21, 2023)]
[Rules and Regulations]
[Pages 40023-40058]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2023-13155]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2023-0923; Project Identifier AD-2022-01432-T;
Amendment 39-22473; AD 2023-12-15]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2022-09-
18, which applied 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 airplanes; and Model MD 90-30 airplanes. AD
2022-09-18 required 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 interference from wireless broadband operations in the
3.7-3.98 GHz frequency band (5G C-Band) 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 stations whose signals are expected to
cover most of the contiguous United States at transmission frequencies
between 3.7-3.98 GHz. This AD requires revising the limitations and
operating procedures
[[Page 40024]]
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
issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective June 21, 2023.
ADDRESSES: 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 final rule, any comments
received, and other information. The address for Docket Operations is
U.S. Department of Transportation, Docket Operations, M-30, West
Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE,
Washington, DC 20590.
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:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 to supersede AD 2022-09-18, Amendment 39-22038 (87 FR
31097, May 23, 2022) (AD 2022-09-18). AD 2022-09-18 applied to all The
Boeing Company (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. The NPRM published in the
Federal Register on May 3, 2023 (88 FR 27749). The NPRM was prompted by
a determination that radio altimeters cannot be relied upon to perform
their intended function if they experience 5G C-Band interference, 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.
In the NPRM, the FAA proposed to retain the AFM revisions required
by AD 2022-09-18 until June 30, 2023. On or before June 30, 2023, the
FAA proposed to require replacing those AFM revisions with limitations
requiring the same procedures for, depending on the airplane model, 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 FAA proposed that the procedures would not be required at 5G C-Band
mitigated airports (5G CMAs) as identified in an FAA Domestic Notice.
The FAA proposed 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.
Discussion of Final Airworthiness Directive
Comments
The FAA provided the public with an opportunity to comment on the
proposed AD and received comments from three commenters. The following
presents the comments received on the NPRM and the FAA's response to
each comment.
Support for NPRM
Boeing and the Air Line Pilots Association, International (ALPA),
supported the NPRM without change.
The supportive comments from ALPA included additional viewpoints
without a suggestion specific to the AD or a request the FAA can act
on. These comments are outside the scope of this final rule.
Request To Extend Compliance Time
Comment summary: American Airlines expressed concern regarding the
compliance time for the proposed actions and requested the FAA revise
the AD to provide a minimum of 30 days from the effective date of the
AD.
FAA response: The FAA understands the commenter's concern and made
every effort to publish this AD as soon as possible. After refraining
from operating at their FCC-authorized levels for a year and a half,
wireless companies are now able to operate at higher levels, yet still
not at the levels authorized. Specifically, wireless companies expect
to operate their networks in urban areas with minimal restrictions due
to the completion of retrofits. Additionally, the FAA anticipates 19
additional telecommunication companies will begin transmitting in the
C-Band after June 30, 2023. Although the FAA continues to work with the
companies that intend to transmit in the 3.7-3.98-GHz band near 5G
CMAs, the FAA has no agreement with those companies to provide the FAA
with tower locations and other information necessary to support the
current NOTAM/AMOC process. Therefore, the FAA will not be able to
extend the June 30, 2023, date.
Conclusion
The FAA reviewed the relevant data, considered any comments
received, and determined that air safety requires adopting this AD as
proposed. Accordingly, the FAA is issuing this AD to address the unsafe
condition on these products. This AD is adopted as proposed in the
NPRM.
Interim Action
The FAA considers this AD to 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. Once a new radio altimeter TSO is developed,
approved, and available, the FAA might consider additional rulemaking.
Effective Date
Section 553(d) of the Administrative Procedure Act (APA) (5 U.S.C.
551 et seq.) requires publication of a rule not less than 30 days
before its effective date. However, section 553(d) authorizes agencies
to make rules effective in less than 30 days when the agency finds
``good cause.'' Radio altimeters cannot be relied upon to perform their
intended function if they experience interference from wireless
broadband operations in the 5G C-Band. This interference can cause
other airplane systems to not properly function, resulting in increased
flightcrew workload while on approach with the flight director,
autothrottle, or autopilot engaged. To address this unsafe condition,
the actions required by this AD must be accomplished before the
compliance date of June 30, 2023. The FAA based this date on the
changes to the 5G C-Band environment beginning on July 1, 2023. These
changes include increased wireless broadband deployment and
transmissions closer to the parameters authorized by the FCC. The
earlier operators learn of the requirements in this AD, the earlier
they can take action to ensure compliance. An effective date less than
30 days would ensure the AD is codified earlier, thereby increasing
awareness of its requirements. Therefore, the FAA finds that good cause
exists pursuant to 5 U.S.C. 553(d)
[[Page 40025]]
for making this amendment immediately effective.
Costs of Compliance
The cost information below describes the costs to change the AFM.
Although this AD largely maintains the AFM limitations currently
required by AD 2022-09-18, the FAA acknowledges that this 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 estimates that this AD affects 476 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
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 \1\ = $85.
New AFM revisions (new action)........ 1 work-hour x $85 per 0 85 \2\ 40,460
hour = $85.
----------------------------------------------------------------------------------------------------------------
\1\ The labor rate of $85 per hour is the average wage rate for an aviation mechanic.
\2\ 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.
Authority for This Rulemaking
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
This AD will not have federalism implications under Executive Order
13132. This AD will 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 this AD:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Will not affect intrastate aviation in Alaska, and
(3) Will 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 Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 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:
2023-12-15 The Boeing Company: Amendment 39-22473; Docket No. FAA-
2023-0923; Project Identifier AD-2022-01432-T.
(a) Effective Date
This airworthiness directive (AD) is effective June 21, 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
[[Page 40026]]
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
Figure 1 to paragraph (g)(2)(i)--Fundamental Effective Isotropic PSD
at Outside Interface of Aircraft Antenna
[GRAPHIC] [TIFF OMITTED] TR21JN23.120
(ii) Tolerance to radio altimeter interference, for the spurious
emissions (3.7-3.98 GHz), at or above the PSD curve threshold
specified in figure 2 to paragraph (g)(2)(ii) of this AD.
[[Page 40027]]
Figure 2 to paragraph (g)(2)(ii)--Spurious Effective Isotropic PSD
at Outside Interface of Aircraft Antenna
[GRAPHIC] [TIFF OMITTED] TR21JN23.121
(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.
[[Page 40028]]
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
[GRAPHIC] [TIFF OMITTED] TR21JN23.122
(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] TR21JN23.123
(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.
[[Page 40029]]
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
[GRAPHIC] [TIFF OMITTED] TR21JN23.124
(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] TR21JN23.125
(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.
[[Page 40030]]
Figure 7 to paragraph (i)(2)--AFM Operating Procedures Revision for
Model 717
[GRAPHIC] [TIFF OMITTED] TR21JN23.126
(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.
[[Page 40031]]
Figure 8 to paragraph (i)(3)--AFM Operating Procedures Revision for
Model MD-10
[GRAPHIC] [TIFF OMITTED] TR21JN23.127
[[Page 40032]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.128
[[Page 40033]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.129
[[Page 40034]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.130
[[Page 40035]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.131
(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 done by inserting a copy of figure 9 to paragraph (i)(4)
of this AD into the Operating Procedures Section of the existing
AFM.
[[Page 40036]]
Figure 9 to paragraph (i)(4)--AFM Operating Procedures Revision
for Model MD-11
[GRAPHIC] [TIFF OMITTED] TR21JN23.132
[[Page 40037]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.133
[[Page 40038]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.134
[[Page 40039]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.135
[[Page 40040]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.136
[[Page 40041]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.137
(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
[GRAPHIC] [TIFF OMITTED] TR21JN23.138
(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.
[[Page 40042]]
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
[GRAPHIC] [TIFF OMITTED] TR21JN23.139
(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
[GRAPHIC] [TIFF OMITTED] TR21JN23.140
(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.
[[Page 40043]]
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
[GRAPHIC] [TIFF OMITTED] TR21JN23.141
(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
[GRAPHIC] [TIFF OMITTED] TR21JN23.142
(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.
[[Page 40044]]
Figure 15 to paragraph (k)(2)--AFM Limitations Revision for Model
717, MD-10, and MD-11
[GRAPHIC] [TIFF OMITTED] TR21JN23.143
(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
[GRAPHIC] [TIFF OMITTED] TR21JN23.144
(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.
[[Page 40045]]
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
[GRAPHIC] [TIFF OMITTED] TR21JN23.145
(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
[GRAPHIC] [TIFF OMITTED] TR21JN23.146
[[Page 40046]]
(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
[GRAPHIC] [TIFF OMITTED] TR21JN23.147
[[Page 40047]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.148
[[Page 40048]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.149
[[Page 40049]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.150
[[Page 40050]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.151
[[Page 40051]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.152
(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.
[[Page 40052]]
Figure 20 to paragraph (l)(4)--AFM Operating Procedures Revision for
Model MD-11
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[[Page 40053]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.154
[[Page 40054]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.155
[[Page 40055]]
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[[Page 40056]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.157
[[Page 40057]]
[GRAPHIC] [TIFF OMITTED] TR21JN23.158
(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.
[[Page 40058]]
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
[GRAPHIC] [TIFF OMITTED] TR21JN23.159
(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 June 9, 2023.
Michael Linegang,
Acting Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2023-13155 Filed 6-16-23; 11:15 am]
BILLING CODE 4910-13-C
