Airworthiness Directives; The Boeing Company Airplanes, 20621-20625 [2021-08213]
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20621
Rules and Regulations
Federal Register
Vol. 86, No. 75
Wednesday, April 21, 2021
This section of the FEDERAL REGISTER
contains regulatory documents having general
applicability and legal effect, most of which
are keyed to and codified in the Code of
Federal Regulations, which is published under
50 titles pursuant to 44 U.S.C. 1510.
The Code of Federal Regulations is sold by
the Superintendent of Documents.
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2019–0480; Product
Identifier 2019–NM–041–AD; Amendment
39–21498; AD 2021–08–04]
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) 2013–07–
09, which applied to certain The Boeing
Company Model 737–700, –700C, –800,
and –900ER series airplanes, Model
747–400F series airplanes, and Model
767–200 and –300 series airplanes. AD
2013–07–09 required a general visual
inspection for affected serial numbers of
the crew oxygen mask stowage box
units, and replacement or reidentification as necessary. This AD
retains the requirements of AD 2013–
07–09 and expands the applicability.
This AD was prompted by a
determination that the affected parts
may be installed on airplanes outside
the original applicability of AD 2013–
07–09. The FAA is issuing this AD to
address the unsafe condition on these
products.
SUMMARY:
This AD is effective May 26,
2021.
The Director of the Federal Register
approved the incorporation by reference
of certain publications listed in this AD
as of May 20, 2013 (78 FR 22178, April
15, 2013).
ADDRESSES: For Boeing service
information identified in this final rule,
contact Boeing Commercial Airplanes,
Attention: Contractual & Data Services
(C&DS), 2600 Westminster Blvd., MC
110–SK57, Seal Beach, CA 90740–5600;
telephone 562–797–1717; internet
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DATES:
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https://www.myboeingfleet.com. For
Intertechnique service information
identified in this final rule, contact
Aerotechnics, 61 rue Pierre Curie BP 1,
78373 Plaisir, CEDEX, France; phone:
+33 1 6486 6964; internet https://
www.zodiacaerospace.com. You may
view this service information at the
FAA, Airworthiness Products Section,
Operational Safety Branch, 2200 South
216th St., Des Moines, WA. For
information on the availability of this
material at the FAA, call 206–231–3195.
It is also available on the internet at
https://www.regulations.gov by
searching for and locating Docket No.
FAA–2019–0480.
Examining the AD Docket
You may examine the AD docket on
the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2019–
0480; 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:
Nicole Tsang, Aerospace Engineer,
Cabin Safety and Environmental
Systems Section, FAA, Seattle ACO
Branch, 2200 South 216th St., Des
Moines, WA 98198; phone and fax: 206–
231–3959; email: Nicole.S.Tsang@
faa.gov.
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to supersede AD 2013–07–09,
Amendment 39–17413 (78 FR 22178,
April 15, 2013) (AD 2013–07–09). AD
2013–07–09 applied to certain The
Boeing Company Model 737–700,
–700C, –800, and –900ER series
airplanes, Model 747–400F series
airplanes, and Model 767–200 and –300
series airplanes. The NPRM published
in the Federal Register on June 25, 2019
(84 FR 29818). The NPRM was
prompted by reports indicating that
certain crew oxygen mask stowage box
units were possibly delivered with a
burr in the inlet fitting. The burr might
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break loose during test or operation, and
might pose an ignition source or cause
an inlet valve to jam. The NPRM was
also prompted by a determination that
the affected parts may be installed on
airplanes outside the original
applicability of AD 2013–07–09. The
NPRM proposed to continue to require
a general visual inspection for affected
serial numbers of the crew oxygen mask
stowage box units, and replacement or
re-identification as necessary. The
NPRM also proposed to expand the
applicability to include those other
airplanes. The FAA is issuing this AD
to address this possible ignition source,
which could result in an oxygen-fed
fire; or an inlet valve jam in a crew
oxygen mask stowage box unit, which
could result in restricted flow of oxygen.
The FAA issued a supplemental
NPRM (SNPRM) that published in the
Federal Register on November 5, 2020
(85 FR 70526). The SNPRM proposed to
continue to require a general visual
inspection for affected serial numbers of
the crew oxygen mask stowage box
units, and replacement or reidentification as necessary. The SNPRM
also proposed to expand the
applicability to include additional
airplane models.
Comments
The FAA gave the public the
opportunity to participate in developing
this AD. The following presents the
comments received on the SNPRM and
the FAA’s response to each comment.
Support for the SNPRM
The Air Line Pilots Association,
International (ALPA) and Boeing
expressed support for the SNPRM.
Additional comments from ALPA are
addressed below.
Effect of Winglets on Accomplishment
of the Proposed Actions
Aviation Partners Boeing stated that
the installation of blended or split
scimitar winglets per Supplemental
Type Certificate (STC) ST01219SE on
Model 737CL airplanes (Model 737–200,
–300, –400, and –500 series airplanes),
and blended winglets per STC
ST01518SE on Model 757 airplanes,
does not affect the accomplishment of
the manufacturer’s service instructions.
The FAA agrees with the commenter
that STC ST01219SE and STC
ST01518SE do not affect the
accomplishment of the manufacturer’s
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service instructions. Therefore, the
installation of STC ST01219SE or STC
ST01518SE does not affect the ability to
accomplish the actions required by this
AD. The FAA has not changed this AD
in this regard.
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Request To Shorten the Compliance
Time
ALPA requested that the FAA shorten
the compliance time of the proposed AD
from 24 months to 12 months. ALPA
noted that several commenters on the
NPRM requested an extended
compliance time, and that it is not in
favor of an extension.
The FAA disagrees with the
commenter’s request. ALPA did not
provide justification for its request. As
noted in the SNPRM, in developing an
appropriate compliance time for this
action, the FAA considered the safety
implications, parts availability, and
normal maintenance schedules for the
timely accomplishment of the
inspection and replacement or reidentification as necessary. Further,
operators are always permitted to
accomplish the requirements of an AD
at a time earlier than the specified
compliance time. In addition, to reduce
the compliance time of the proposed AD
would necessitate (under the provisions
of the Administrative Procedure Act)
reissuing the notice, reopening the
period for public comment, considering
additional comments subsequently
received, and eventually issuing a final
rule. That procedure could add
unwarranted time to the rulemaking
process. In light of this, and in
consideration of the amount of time that
has already elapsed since issuance of
the original notice, the FAA has
determined that further delay of this AD
is not appropriate. The FAA has not
changed this AD in this regard.
Request To Allow a Records Review
Based on Certain Additional Criteria
United Parcel Service Co. (UPS)
requested that the introductory text to
paragraph (i) of the proposed AD be
revised to allow a records review in lieu
of the specified inspection, provided it
can be conclusively determined that the
serial number is not an affected
(suspect) part (one that is identified in
the Appendix of Intertechnique Service
Bulletin MXP1/4–35–175, Revision 2,
dated May 10, 2011). UPS noted that
paragraph (i) of the proposed AD would
allow a records review if the serial
number of the crew oxygen mask
stowage box unit could be conclusively
determined. UPS noted that it has
identified scenarios where the serial
number may not be conclusively
known, but the unit can be confirmed to
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not be one of the affected units. UPS
explained that Boeing was not
consistent in providing serial numbers
for the units with delivery documents.
However, UPS noted that through
records showing when units were
changed, as well as knowing the date of
production of a given aircraft, UPS can
conclusively determine that the units
with the affected serial numbers were
not installed on a given aircraft.
The FAA agrees with the commenter’s
request for the reasons provided. The
FAA has revised the introductory text to
paragraph (i) of this AD to clarify that
a records review is also acceptable if it
can be conclusively determined that the
serial number is not one that is
identified in the Appendix of
Intertechnique Service Bulletin MXP1/
4–35–175, Revision 2, dated May 10,
2011.
Request To Revise Manufacturing Date
Range
United Airlines requested that
paragraph (i)(1) of the proposed AD be
revised to specify that units with a
manufacturing date outside the range of
July 2007 through November 2007
inclusive (instead of July 12, 2007,
through November 20, 2007, inclusive)
do not need to be replaced. United
Airlines also requested that similar
revisions be made to the introductory
text to paragraph (i) of the proposed AD,
and paragraphs (i)(2), (j)(1), and (j)(2) of
the proposed AD. United Airlines stated
that the manufacture date on the mask
stowage box units typically shows only
the month and year (in MMYYYY
format). The commenter noted that
determining the exact calendar date of
manufacture may not be possible, and
without a specific serial number, the
manufacturer would not be able to
narrow down the date.
The FAA partially agrees with the
commenter’s request. The FAA agrees
that determining the exact date of
manufacture may not be possible
because the manufacturer date on the
mask stowage box units typically shows
only the month and year. The FAA has
therefore revised paragraph (i)(1) of this
AD to specify that units with a
manufacturing date outside the range of
July 2007 through November 2007
inclusive do not need to be replaced.
The FAA has also revised paragraph
(j)(1) of this AD to specify that units
where the serial number is unreadable
or undetermined, but the manufacturing
date can conclusively be determined to
be outside the range of July 2007
through November 2007 inclusive, may
be installed on an airplane. However,
the FAA has determined that the
commenter’s suggested revisions to the
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introductory text to paragraph (i) of this
AD are not needed because the
introductory text to paragraph (i) of this
AD only requires determining the serial
number and does not specify actions
based on whether or not the serial
number can be determined. In addition,
the FAA has determined that the
commenter’s suggested revisions to
paragraphs (i)(2) and (j)(2) of this AD are
not needed because the actions in those
paragraphs are only applicable for units
with a known serial number that is
identified in table 2 of the Appendix of
Intertechnique Service Bulletin MXP1/
4–35–175, Revision 2, dated May 10,
2011 (those that need re-identification).
Request To Allow Use of Aircraft
Maintenance Manual (AMM)
Delta Air Lines (Delta) requested
confirmation that it may use the
respective fleet’s AMM to perform
removals and installations if any of the
affected units are found on its airplanes.
Delta noted that paragraph (i) of the
proposed AD does not specify
instructions for removal or replacement.
Delta asked for confirmation that using
the applicable AMM for these tasks
would not require it to obtain an
alternative method of compliance
(AMOC).
The FAA agrees that the commenter’s
intended approach is acceptable for
compliance with this AD and that no
AMOC is needed to use the applicable
AMM. The AMMs for the affected
airplanes contain adequate instructions
for removal and installation of the
affected units. No change to this AD is
necessary.
Clarification of Certain Actions
The FAA has revised paragraph (i)(1)
of this AD to clarify conditions that
require replacement of a crew oxygen
mask stowage box unit, which includes
an unreadable or undetermined serial
number, except as otherwise specified.
The FAA has also revised paragraph
(j)(1) of this AD to clarify conditions
that prohibit the installation of a crew
oxygen mask stowage box unit, which
includes an unreadable or
undetermined serial number, except as
specified otherwise.
Conclusion
The FAA reviewed the relevant data,
considered the comments received, and
determined that air safety and the
public interest require adopting this AD
with the changes described previously,
and minor editorial changes. The FAA
has determined that these minor
changes:
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• Are consistent with the intent that
was proposed in the SNPRM for
addressing the unsafe condition; and
• Do not add any additional burden
upon the public than was already
proposed in the SNPRM.
The FAA also determined that these
changes will not increase the economic
burden on any operator or increase the
scope of this AD.
Related Service Information Under 1
CFR Part 51
This AD requires Boeing Alert Service
Bulletin 737–35A1121, Revision 1,
dated November 7, 2011; Boeing Alert
Service Bulletin 747–35A2126, Revision
1, dated September 29, 2011; Boeing
Alert Service Bulletin 767–35A0057,
Revision 1, dated November 17, 2011;
and Intertechnique Service Bulletin
MXP1/4–35–175, Revision 2, dated May
10, 2011; which the Director of the
Federal Register approved for
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incorporation by reference as of May 20,
2013 (78 FR 22178, April 15, 2013). This
service information is reasonably
available because the interested parties
have access to it through their normal
course of business or by the means
identified in the ADDRESSES section.
Costs of Compliance
The FAA estimates that this AD
affects 3,723 airplanes of U.S. registry.
The FAA estimates the following costs
to comply with this AD:
ESTIMATED COSTS
Inspection (retained action from AD
2013-07-09) (40 airplanes).
Inspection (new action) (3,683 airplanes) ......
1 work-hour × $85 per hour = $85 .................
$0
$85
$3,400
1 work-hour × $85 per hour = $85 .................
0
85
313,055
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
The FAA has determined that 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,
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Parts cost
Cost on U.S.
operators
Labor cost
The FAA has received no definitive
data that would enable providing cost
estimates for the on-condition actions
specified in this AD.
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Cost per
product
Action
(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.
Adoption of 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) 2013–07–09, Amendment 39–
17413 (78 FR 22178, April 15, 2013);
and
■ b. Adding the following new AD:
■
■
2021–08–04 The Boeing Company:
Amendment 39–21498; Docket No.
FAA–2019–0480; Product Identifier
2019–NM–041–AD.
(a) Effective Date
This airworthiness directive (AD) is
effective May 26, 2021.
(b) Affected ADs
This AD replaces AD 2013–07–09,
Amendment 39–17413 (78 FR 22178, April
15, 2013) (AD 2013–07–09).
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(c) Applicability
This AD applies to all The Boeing
Company airplanes, certificated in any
category, as identified in paragraphs (c)(1)
through (5) of this AD.
(1) Model 737–200, –300, –400, –500, –600,
–700, –700C, –800, –900, and –900ER series
airplanes.
(2) Model 737–8 and 737–9 airplanes.
(3) Model 747–200B, 747–200C, 747–200F,
747–400, 747–400D, and 747–400F series
airplanes.
(4) Model 757–200, –200PF, –200CB, and
–300 series airplanes.
(5) Model 767–200, –300, –300F, and
–400ER series airplanes.
(d) Subject
Air Transport Association (ATA) of
America Code 35, Oxygen.
(e) Unsafe Condition
This AD was prompted by reports
indicating that certain crew oxygen mask
stowage box units were possibly delivered
with a burr in the inlet fitting. The burr might
break loose during test or operation, and
might pose an ignition source or cause an
inlet valve to jam. This AD was also
prompted by a determination that the
affected parts may be installed on airplanes
outside the applicability of AD 2013–07–09.
The FAA is issuing this AD to address this
possible ignition source, which could result
in an oxygen-fed fire; or an inlet valve jam
in a crew oxygen mask stowage box unit,
which could result in restricted flow of
oxygen.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Retained Inspection and Corrective
Action, With No Changes
This paragraph restates the requirements of
paragraph (g) of AD 2013–07–09 with no
changes. For The Boeing Company Model
737 airplanes as identified in Boeing Alert
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Service Bulletin 737–35A1121, Revision 1,
dated November 7, 2011; The Boeing
Company Model 747 airplanes as identified
in Boeing Alert Service Bulletin 747–
35A2126, Revision 1, dated September 29,
2011; and The Boeing Company Model 767
airplanes as identified in Boeing Alert
Service Bulletin 767–35A0057, Revision 1,
dated November 17, 2011: Within 24 months
after May 20, 2013 (the effective date of AD
2013–07–09), do a general visual inspection
to determine if the serial number of the crew
oxygen mask stowage box unit is identified
in the Appendix of Intertechnique Service
Bulletin MXP1/4–35–175, Revision 2, dated
May 10, 2011, in accordance with the
Accomplishment Instructions of Boeing Alert
Service Bulletin 737–35A1121, Revision 1,
dated November 7, 2011; Boeing Alert
Service Bulletin 747–35A2126, Revision 1,
dated September 29, 2011; or Boeing Alert
Service Bulletin 767–35A0057, Revision 1,
dated November 17, 2011; as applicable. A
review of airplane maintenance records is
acceptable in lieu of this inspection if the
serial number of the crew oxygen mask
stowage box unit can be conclusively
determined from that review.
(1) If any crew oxygen mask stowage box
unit has a serial number identified in table
1 of the Appendix of Intertechnique Service
Bulletin MXP1/4–35–175, Revision 2, dated
May 10, 2011: Before further flight, replace
the crew oxygen mask stowage box unit with
a new or serviceable unit in accordance with
the Accomplishment Instructions of Boeing
Alert Service Bulletin 737–35A1121,
Revision 1, dated November 7, 2011; Boeing
Alert Service Bulletin 747–35A2126,
Revision 1, dated September 29, 2011; or
Boeing Alert Service Bulletin 767–35A0057,
Revision 1, dated November 17, 2011; as
applicable.
(2) If any crew oxygen mask stowage box
unit has a serial number identified in table
2 of the Appendix of Intertechnique Service
Bulletin MXP1/4–35–175, Revision 2, dated
May 10, 2011: Before further flight, add the
letter ‘‘I’’ to the end of the serial number
(identified as ‘‘SER’’) on the identification
label, in accordance with the
Accomplishment Instructions of
Intertechnique Service Bulletin MXP1/4–35–
175, Revision 2, dated May 10, 2011; and
reinstall in accordance with the
Accomplishment Instructions of Boeing Alert
Service Bulletin 737–35A1121, Revision 1,
dated November 7, 2011; Boeing Alert
Service Bulletin 747–35A2126, Revision 1,
dated September 29, 2011; or Boeing Alert
Service Bulletin 767–35A0057, Revision 1,
dated November 17, 2011; as applicable.
(3) If no crew oxygen mask stowage box
unit has a serial number identified in the
Appendix of Intertechnique Service Bulletin
MXP1/4–35–175, Revision 2, dated May 10,
2011: Unless a records review was done to
determine the serial number, before further
flight, reinstall the crew oxygen mask
stowage box unit, in accordance with the
Accomplishment Instructions of Boeing Alert
Service Bulletin 737–35A1121, Revision 1,
dated November 7, 2011; Boeing Alert
Service Bulletin 747–35A2126, Revision 1,
dated September 29, 2011; or Boeing Alert
Service Bulletin 767–35A0057, Revision 1,
dated November 17, 2011; as applicable.
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(h) Retained Parts Installation Prohibition,
With No Changes
This paragraph restates the requirements of
paragraph (h) of AD 2013–07–09 with no
changes. For airplanes identified in
paragraph (g) of this AD: As of May 20, 2013
(the effective date of AD 2013–07–09), no
person may install a crew oxygen mask
stowage box unit with a serial number listed
in the Appendix of Intertechnique Service
Bulletin MXP1/4–35–175, Revision 2, dated
May 10, 2011, on any airplane.
(i) New Inspection and Corrective Action
For airplanes other than those identified in
paragraph (g) of this AD: Within 24 months
after the effective date of this AD, do a
general visual inspection to determine if the
serial number of the crew oxygen mask
stowage box unit is identified in the
Appendix of Intertechnique Service Bulletin
MXP1/4–35–175, Revision 2, dated May 10,
2011. A review of airplane maintenance
records is acceptable in lieu of this
inspection if the serial number of the crew
oxygen mask stowage box unit can be
conclusively determined from that review, or
if it can be conclusively determined that the
serial number is not one that is identified in
the Appendix of Intertechnique Service
Bulletin MXP1/4–35–175, Revision 2, dated
May 10, 2011.
(1) If any crew oxygen mask stowage box
unit has a serial number identified in table
1 of the Appendix of Intertechnique Service
Bulletin MXP1/4–35–175, Revision 2, dated
May 10, 2011, or the crew oxygen mask
stowage box unit has a serial number that is
unreadable or undetermined: Before further
flight, replace the crew oxygen mask stowage
box unit with a new or serviceable unit. If
any crew oxygen mask stowage box unit’s
serial number is unreadable or
undetermined, but the manufacturing date
can conclusively be determined to be outside
the range of July 2007 through November
2007 inclusive, the crew oxygen mask
stowage box unit does not need to be
replaced.
(2) If any crew oxygen mask stowage box
unit has a serial number identified in table
2 of the Appendix of Intertechnique Service
Bulletin MXP1/4–35–175, Revision 2, dated
May 10, 2011: Before further flight, add the
letter ‘‘I’’ to the end of the serial number
(identified as ‘‘SER’’) on the identification
label, in accordance with the
Accomplishment Instructions of
Intertechnique Service Bulletin MXP1/4–35–
175, Revision 2, dated May 10, 2011; and
reinstall the crew oxygen mask stowage box
unit.
(j) New Parts Installation Prohibition
(1) For airplanes other than those
identified in paragraph (g) of this AD: As of
the effective date of this AD, no person may
install a crew oxygen mask stowage box unit
with a serial number identified in table 1 of
the Appendix of Intertechnique Service
Bulletin MXP1/4–35–175, Revision 2, dated
May 10, 2011; or any crew oxygen mask
stowage box unit with a serial number that
is unreadable or undetermined unless the
manufacturing date can conclusively be
determined by a review of the airplane
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maintenance records to be outside the range
of July 2007 through November 2007
inclusive.
(2) For airplanes other than those
identified in paragraph (g) of this AD: As of
the effective date of this AD, no person may
install a crew oxygen mask stowage box unit
with a serial number identified in table 2 of
the Appendix of Intertechnique Service
Bulletin MXP1/4–35–175, Revision 2, dated
May 10, 2011, on any airplane, unless that
crew oxygen mask stowage box unit has been
modified as required by paragraph (i)(2) of
this AD.
(k) Alternative Methods of Compliance
(AMOCs)
(1) The Manager, Seattle ACO 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 local Flight Standards
Office, as appropriate. If sending information
directly to the manager of the certification
office, send it to the attention of the person
identified in paragraph (l) of this AD.
Information may be emailed to: 9-ANMSeattle-ACO-AMOC-Requests@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) An AMOC that provides an acceptable
level of safety may be used for any repair,
modification, or alteration required by this
AD if it is approved by the Boeing Company
Organization Designation Authorization
(ODA) that has been authorized by the
Manager, Seattle ACO Branch, FAA, to make
those findings. To be approved, the repair
method, modification deviation, or alteration
deviation must meet the certification basis of
the airplane, and the approval must
specifically refer to this AD.
(4) AMOCs approved previously for AD
2013–07–09 are approved as AMOCs for the
corresponding provisions of this AD.
(l) Related Information
For more information about this AD,
contact Nicole Tsang, Aerospace Engineer,
Cabin Safety and Environmental Systems
Section, FAA, Seattle ACO Branch, 2200
South 216th St., Des Moines, WA 98198;
phone and fax: 206–231–3959; email:
Nicole.S.Tsang@faa.gov.
(m) Material Incorporated by Reference
(1) The Director of the Federal Register
approved the incorporation by reference
(IBR) of the service information listed in this
paragraph under 5 U.S.C. 552(a) and 1 CFR
part 51.
(2) You must use this service information
as applicable to do the actions required by
this AD, unless this AD specifies otherwise.
(3) The following service information was
approved for IBR on May 20, 2013 (78 FR
22178, April 15, 2013).
(i) Boeing Alert Service Bulletin 737–
35A1121, Revision 1, dated November 7,
2011.
(ii) Boeing Alert Service Bulletin 747–
35A2126, Revision 1, dated September 29,
2011.
E:\FR\FM\21APR1.SGM
21APR1
Federal Register / Vol. 86, No. 75 / Wednesday, April 21, 2021 / Rules and Regulations
(iii) Boeing Alert Service Bulletin 767–
35A0057, Revision 1, dated November 17,
2011.
(iv) Intertechnique Service Bulletin MXP1/
4–35–175, Revision 2, dated May 10, 2011.
(4) For Boeing service information
identified in this AD, contact Boeing
Commercial Airplanes, Attention:
Contractual & Data Services (C&DS), 2600
Westminster Blvd., MC 110–SK57, Seal
Beach, CA 90740–5600; telephone 562–797–
1717; internet https://
www.myboeingfleet.com.
(5) For Intertechnique service information
identified in this AD, contact Aerotechnics,
61 rue Pierre Curie BP 1, 78373 Plaisir,
CEDEX, France; phone: +33 1 6486 6964;
internet https://www.zodiacaerospace.com.
(6) You may view this service information
at the FAA, Airworthiness Products Section,
Operational Safety Branch, 2200 South 216th
St., Des Moines, WA. For information on the
availability of this material at the FAA, call
206–231–3195.
(7) You may view this service information
that is incorporated by reference at the
National Archives and Records
Administration (NARA). For information on
the availability of this material at NARA,
email fedreg.legal@nara.gov, or go to: https://
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued on March 30, 2021.
Ross Landes,
Deputy Director for Regulatory Operations,
Compliance & Airworthiness Division,
Aircraft Certification Service.
[FR Doc. 2021–08213 Filed 4–20–21; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
The
Commercial Space Launch Act of 1984,
as amended and codified at 51 U.S.C.
50901–50923, authorizes the
Department of Transportation, and the
FAA through delegation, to oversee,
license, and regulate commercial launch
and reentry activities, and the operation
of launch and reentry sites as carried
out by U.S. citizens or within the United
States. Section 50905(b)(3) allows the
Secretary to waive a requirement,
including the requirement to obtain a
license, for an individual applicant if
the Secretary decides that the waiver is
in the public interest and will not
jeopardize the public health and safety,
safety of property, and national security
and foreign policy interests of the
United States.1 This policy statement
provides public notice of the FAA’s
approach to evaluating waiver
applications under 51 U.S.C.
50905(b)(3) with respect to ground
safety requirements at Federal launch
ranges. It does not have the force and
effect of law and is not meant to bind
the public in any way. It is intended
only to provide clarity to the public
regarding existing requirements under
the law and agency policies.
SUPPLEMENTARY INFORMATION:
Federal Aviation Administration
I. Background
14 CFR Parts 415, 417, 431, and 435
The FAA has worked in partnership
for launch safety with the U.S. Air Force
(AF) since 2001 and the National
Aeronautics and Space Administration
(NASA) since 2007. An objective of
these interagency partnerships has been
to maintain common safety standards
and practices for launch across the
Federal Government. These agencies
formed the Common Standards Working
Group (CSWG), which is tri-chaired by
FAA, AF, and NASA. The CSWG is a
forum to maintain common safety
standards and practices between the
agencies for both commercial and
Government launch activities. The
CSWG is comprised of range safety
personnel from Cape Canaveral Air
Force Station (CCAFS), Vandenberg Air
Force Base (VAFB), Wallops Flight
Facility (WFF), and Kennedy Space
Center (KSC).
Statement of Policy on Waiving
Ground Safety Regulations at Cape
Canaveral Air Force Station,
Vandenberg Air Force Base, Wallops
Flight Facility, and Kennedy Space
Center
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Policy statement.
AGENCY:
This action establishes the
FAA’s policy applicable to waivers of
FAA ground safety requirements for
licensed commercial launch and reentry
activities at certain Federal ranges. The
Federal ranges that currently meet the
criteria for application of this policy are:
Cape Canaveral Air Force Station,
Vandenberg Air Force Base, Wallops
Flight Facility, and Kennedy Space
Center.
DATES: The policy described herein was
effective November 3, 2020.
SUMMARY:
khammond on DSKJM1Z7X2PROD with RULES
For
additional information concerning this
action, contact Randy Repcheck, Acting
Executive Director, Office of
Operational Safety, via letter: 800
Independence Ave. SW, Washington,
DC 20591; via email: 9-AST-Inquiries@
faa.gov; via phone: 202–267–7793.
FOR FURTHER INFORMATION CONTACT:
VerDate Sep<11>2014
16:25 Apr 20, 2021
Jkt 253001
In 2006, the FAA issued a final rule
that established the launch site safety
assessment (LSSA) process.2 The LSSA
is an FAA assessment of a Federal
launch range to determine if the range
requirements and practices satisfy FAA
safety regulations. Subpart C of 14 CFR
part 415 describes how the FAA reviews
the safety of licensed launches from
Federal launch ranges.
Subpart C recognizes that a launch
operator may use an LSSA to
demonstrate compliance with FAA
safety requirements.3
The FAA has completed LSSAs for
CCAFS, VAFB, WFF, and it is in the
process of finalizing an LSSA for KSC.
In the initial assessments for CCAFS,
VAFB, and WFF, the FAA did not find
any substantial differences between the
requirements and practices of these
Federal ranges and FAA regulations
because 14 CFR part 417 was derived
largely from existing Federal launch
range safety requirements. Similarly, in
developing the LSSA for KSC, the FAA
likewise concluded that KSC’s
requirements and practices were not
substantially different from FAA ground
safety regulations. The FAA has
maintained and updated the initial
assessments for CCAFS, VAFB, and
WFF to account for changes in processes
at these Federal ranges and in FAA
regulations. Where the range’s
requirement or practice did not meet
FAA regulations, the FAA either made
a determination that the range’s
requirement provides for an equivalent
level of safety to the FAA’s requirement,
waived the FAA requirement, or
required the operator to comply with
the FAA requirement. In addition to the
LSSA process, the FAA, through its
participation in the CSWG, has gained
significant insight into the ground safety
requirements and practices for CCAFS,
VAFB, WFF, and KSC.
The 2015 Commercial Space Launch
Competitiveness Act directed the
Secretary of Transportation to consult
with the Secretary of Defense,
Administrator of NASA, and other
agencies, as appropriate, to identify and
evaluate requirements imposed on
commercial space launch and reentry
operators to protect the public health
and safety, safety of property, national
security interests, and foreign policy
interests of the United States.4 It also
directed the Secretary of Transportation
to resolve any inconsistencies and
remove any outmoded or duplicative
2 71
1 The
Secretary may not grant a waiver under this
section that would permit the launch or reentry of
a launch vehicle or a reentry vehicle without a
license or permit if a human being will be on board.
PO 00000
Frm 00005
Fmt 4700
Sfmt 4700
20625
FR 50508 (Aug. 25, 2006).
CFR 415.31(a).
4 U.S. Commercial Space Launch Competitiveness
Act, Public Law 114–90, sec. 113(c)(1), 129 Stat.
704, 714 (2015).
3 14
E:\FR\FM\21APR1.SGM
21APR1
Agencies
[Federal Register Volume 86, Number 75 (Wednesday, April 21, 2021)]
[Rules and Regulations]
[Pages 20621-20625]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-08213]
========================================================================
Rules and Regulations
Federal Register
________________________________________________________________________
This section of the FEDERAL REGISTER contains regulatory documents
having general applicability and legal effect, most of which are keyed
to and codified in the Code of Federal Regulations, which is published
under 50 titles pursuant to 44 U.S.C. 1510.
The Code of Federal Regulations is sold by the Superintendent of Documents.
========================================================================
Federal Register / Vol. 86, No. 75 / Wednesday, April 21, 2021 /
Rules and Regulations
[[Page 20621]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2019-0480; Product Identifier 2019-NM-041-AD; Amendment
39-21498; AD 2021-08-04]
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) 2013-07-
09, which applied to certain The Boeing Company Model 737-700, -700C, -
800, and -900ER series airplanes, Model 747-400F series airplanes, and
Model 767-200 and -300 series airplanes. AD 2013-07-09 required a
general visual inspection for affected serial numbers of the crew
oxygen mask stowage box units, and replacement or re-identification as
necessary. This AD retains the requirements of AD 2013-07-09 and
expands the applicability. This AD was prompted by a determination that
the affected parts may be installed on airplanes outside the original
applicability of AD 2013-07-09. The FAA is issuing this AD to address
the unsafe condition on these products.
DATES: This AD is effective May 26, 2021.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of May 20, 2013
(78 FR 22178, April 15, 2013).
ADDRESSES: For Boeing service information identified in this final
rule, contact Boeing Commercial Airplanes, Attention: Contractual &
Data Services (C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach,
CA 90740-5600; telephone 562-797-1717; internet https://www.myboeingfleet.com. For Intertechnique service information
identified in this final rule, contact Aerotechnics, 61 rue Pierre
Curie BP 1, 78373 Plaisir, CEDEX, France; phone: +33 1 6486 6964;
internet https://www.zodiacaerospace.com. You may view this service
information at the FAA, Airworthiness Products Section, Operational
Safety Branch, 2200 South 216th St., Des Moines, WA. For information on
the availability of this material at the FAA, call 206-231-3195. It is
also available on the internet at https://www.regulations.gov by
searching for and locating Docket No. FAA-2019-0480.
Examining the AD Docket
You may examine the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2019-
0480; 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: Nicole Tsang, Aerospace Engineer,
Cabin Safety and Environmental Systems Section, FAA, Seattle ACO
Branch, 2200 South 216th St., Des Moines, WA 98198; phone and fax: 206-
231-3959; email: [email protected].
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 to supersede AD 2013-07-09, Amendment 39-17413 (78 FR
22178, April 15, 2013) (AD 2013-07-09). AD 2013-07-09 applied to
certain The Boeing Company Model 737-700, -700C, -800, and -900ER
series airplanes, Model 747-400F series airplanes, and Model 767-200
and -300 series airplanes. The NPRM published in the Federal Register
on June 25, 2019 (84 FR 29818). The NPRM was prompted by reports
indicating that certain crew oxygen mask stowage box units were
possibly delivered with a burr in the inlet fitting. The burr might
break loose during test or operation, and might pose an ignition source
or cause an inlet valve to jam. The NPRM was also prompted by a
determination that the affected parts may be installed on airplanes
outside the original applicability of AD 2013-07-09. The NPRM proposed
to continue to require a general visual inspection for affected serial
numbers of the crew oxygen mask stowage box units, and replacement or
re-identification as necessary. The NPRM also proposed to expand the
applicability to include those other airplanes. The FAA is issuing this
AD to address this possible ignition source, which could result in an
oxygen-fed fire; or an inlet valve jam in a crew oxygen mask stowage
box unit, which could result in restricted flow of oxygen.
The FAA issued a supplemental NPRM (SNPRM) that published in the
Federal Register on November 5, 2020 (85 FR 70526). The SNPRM proposed
to continue to require a general visual inspection for affected serial
numbers of the crew oxygen mask stowage box units, and replacement or
re-identification as necessary. The SNPRM also proposed to expand the
applicability to include additional airplane models.
Comments
The FAA gave the public the opportunity to participate in
developing this AD. The following presents the comments received on the
SNPRM and the FAA's response to each comment.
Support for the SNPRM
The Air Line Pilots Association, International (ALPA) and Boeing
expressed support for the SNPRM. Additional comments from ALPA are
addressed below.
Effect of Winglets on Accomplishment of the Proposed Actions
Aviation Partners Boeing stated that the installation of blended or
split scimitar winglets per Supplemental Type Certificate (STC)
ST01219SE on Model 737CL airplanes (Model 737-200, -300, -400, and -500
series airplanes), and blended winglets per STC ST01518SE on Model 757
airplanes, does not affect the accomplishment of the manufacturer's
service instructions.
The FAA agrees with the commenter that STC ST01219SE and STC
ST01518SE do not affect the accomplishment of the manufacturer's
[[Page 20622]]
service instructions. Therefore, the installation of STC ST01219SE or
STC ST01518SE does not affect the ability to accomplish the actions
required by this AD. The FAA has not changed this AD in this regard.
Request To Shorten the Compliance Time
ALPA requested that the FAA shorten the compliance time of the
proposed AD from 24 months to 12 months. ALPA noted that several
commenters on the NPRM requested an extended compliance time, and that
it is not in favor of an extension.
The FAA disagrees with the commenter's request. ALPA did not
provide justification for its request. As noted in the SNPRM, in
developing an appropriate compliance time for this action, the FAA
considered the safety implications, parts availability, and normal
maintenance schedules for the timely accomplishment of the inspection
and replacement or re-identification as necessary. Further, operators
are always permitted to accomplish the requirements of an AD at a time
earlier than the specified compliance time. In addition, to reduce the
compliance time of the proposed AD would necessitate (under the
provisions of the Administrative Procedure Act) reissuing the notice,
reopening the period for public comment, considering additional
comments subsequently received, and eventually issuing a final rule.
That procedure could add unwarranted time to the rulemaking process. In
light of this, and in consideration of the amount of time that has
already elapsed since issuance of the original notice, the FAA has
determined that further delay of this AD is not appropriate. The FAA
has not changed this AD in this regard.
Request To Allow a Records Review Based on Certain Additional Criteria
United Parcel Service Co. (UPS) requested that the introductory
text to paragraph (i) of the proposed AD be revised to allow a records
review in lieu of the specified inspection, provided it can be
conclusively determined that the serial number is not an affected
(suspect) part (one that is identified in the Appendix of
Intertechnique Service Bulletin MXP1/4-35-175, Revision 2, dated May
10, 2011). UPS noted that paragraph (i) of the proposed AD would allow
a records review if the serial number of the crew oxygen mask stowage
box unit could be conclusively determined. UPS noted that it has
identified scenarios where the serial number may not be conclusively
known, but the unit can be confirmed to not be one of the affected
units. UPS explained that Boeing was not consistent in providing serial
numbers for the units with delivery documents. However, UPS noted that
through records showing when units were changed, as well as knowing the
date of production of a given aircraft, UPS can conclusively determine
that the units with the affected serial numbers were not installed on a
given aircraft.
The FAA agrees with the commenter's request for the reasons
provided. The FAA has revised the introductory text to paragraph (i) of
this AD to clarify that a records review is also acceptable if it can
be conclusively determined that the serial number is not one that is
identified in the Appendix of Intertechnique Service Bulletin MXP1/4-
35-175, Revision 2, dated May 10, 2011.
Request To Revise Manufacturing Date Range
United Airlines requested that paragraph (i)(1) of the proposed AD
be revised to specify that units with a manufacturing date outside the
range of July 2007 through November 2007 inclusive (instead of July 12,
2007, through November 20, 2007, inclusive) do not need to be replaced.
United Airlines also requested that similar revisions be made to the
introductory text to paragraph (i) of the proposed AD, and paragraphs
(i)(2), (j)(1), and (j)(2) of the proposed AD. United Airlines stated
that the manufacture date on the mask stowage box units typically shows
only the month and year (in MMYYYY format). The commenter noted that
determining the exact calendar date of manufacture may not be possible,
and without a specific serial number, the manufacturer would not be
able to narrow down the date.
The FAA partially agrees with the commenter's request. The FAA
agrees that determining the exact date of manufacture may not be
possible because the manufacturer date on the mask stowage box units
typically shows only the month and year. The FAA has therefore revised
paragraph (i)(1) of this AD to specify that units with a manufacturing
date outside the range of July 2007 through November 2007 inclusive do
not need to be replaced. The FAA has also revised paragraph (j)(1) of
this AD to specify that units where the serial number is unreadable or
undetermined, but the manufacturing date can conclusively be determined
to be outside the range of July 2007 through November 2007 inclusive,
may be installed on an airplane. However, the FAA has determined that
the commenter's suggested revisions to the introductory text to
paragraph (i) of this AD are not needed because the introductory text
to paragraph (i) of this AD only requires determining the serial number
and does not specify actions based on whether or not the serial number
can be determined. In addition, the FAA has determined that the
commenter's suggested revisions to paragraphs (i)(2) and (j)(2) of this
AD are not needed because the actions in those paragraphs are only
applicable for units with a known serial number that is identified in
table 2 of the Appendix of Intertechnique Service Bulletin MXP1/4-35-
175, Revision 2, dated May 10, 2011 (those that need re-
identification).
Request To Allow Use of Aircraft Maintenance Manual (AMM)
Delta Air Lines (Delta) requested confirmation that it may use the
respective fleet's AMM to perform removals and installations if any of
the affected units are found on its airplanes. Delta noted that
paragraph (i) of the proposed AD does not specify instructions for
removal or replacement. Delta asked for confirmation that using the
applicable AMM for these tasks would not require it to obtain an
alternative method of compliance (AMOC).
The FAA agrees that the commenter's intended approach is acceptable
for compliance with this AD and that no AMOC is needed to use the
applicable AMM. The AMMs for the affected airplanes contain adequate
instructions for removal and installation of the affected units. No
change to this AD is necessary.
Clarification of Certain Actions
The FAA has revised paragraph (i)(1) of this AD to clarify
conditions that require replacement of a crew oxygen mask stowage box
unit, which includes an unreadable or undetermined serial number,
except as otherwise specified.
The FAA has also revised paragraph (j)(1) of this AD to clarify
conditions that prohibit the installation of a crew oxygen mask stowage
box unit, which includes an unreadable or undetermined serial number,
except as specified otherwise.
Conclusion
The FAA reviewed the relevant data, considered the comments
received, and determined that air safety and the public interest
require adopting this AD with the changes described previously, and
minor editorial changes. The FAA has determined that these minor
changes:
[[Page 20623]]
Are consistent with the intent that was proposed in the
SNPRM for addressing the unsafe condition; and
Do not add any additional burden upon the public than was
already proposed in the SNPRM.
The FAA also determined that these changes will not increase the
economic burden on any operator or increase the scope of this AD.
Related Service Information Under 1 CFR Part 51
This AD requires Boeing Alert Service Bulletin 737-35A1121,
Revision 1, dated November 7, 2011; Boeing Alert Service Bulletin 747-
35A2126, Revision 1, dated September 29, 2011; Boeing Alert Service
Bulletin 767-35A0057, Revision 1, dated November 17, 2011; and
Intertechnique Service Bulletin MXP1/4-35-175, Revision 2, dated May
10, 2011; which the Director of the Federal Register approved for
incorporation by reference as of May 20, 2013 (78 FR 22178, April 15,
2013). This service information is reasonably available because the
interested parties have access to it through their normal course of
business or by the means identified in the ADDRESSES section.
Costs of Compliance
The FAA estimates that this AD affects 3,723 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
----------------------------------------------------------------------------------------------------------------
Inspection (retained action from AD 1 work-hour x $85 per $0 $85 $3,400
2013[dash]07[dash]09) (40 airplanes). hour = $85.
Inspection (new action) (3,683 1 work-hour x $85 per 0 85 313,055
airplanes). hour = $85.
----------------------------------------------------------------------------------------------------------------
The FAA has received no definitive data that would enable providing
cost estimates for the on-condition actions specified in this AD.
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
The FAA has determined that 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.
Adoption of 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) 2013-07-09, Amendment 39-17413
(78 FR 22178, April 15, 2013); and
0
b. Adding the following new AD:
2021-08-04 The Boeing Company: Amendment 39-21498; Docket No. FAA-
2019-0480; Product Identifier 2019-NM-041-AD.
(a) Effective Date
This airworthiness directive (AD) is effective May 26, 2021.
(b) Affected ADs
This AD replaces AD 2013-07-09, Amendment 39-17413 (78 FR 22178,
April 15, 2013) (AD 2013-07-09).
(c) Applicability
This AD applies to all The Boeing Company airplanes,
certificated in any category, as identified in paragraphs (c)(1)
through (5) of this AD.
(1) Model 737-200, -300, -400, -500, -600, -700, -700C, -800, -
900, and -900ER series airplanes.
(2) Model 737-8 and 737-9 airplanes.
(3) Model 747-200B, 747-200C, 747-200F, 747-400, 747-400D, and
747-400F series airplanes.
(4) Model 757-200, -200PF, -200CB, and -300 series airplanes.
(5) Model 767-200, -300, -300F, and -400ER series airplanes.
(d) Subject
Air Transport Association (ATA) of America Code 35, Oxygen.
(e) Unsafe Condition
This AD was prompted by reports indicating that certain crew
oxygen mask stowage box units were possibly delivered with a burr in
the inlet fitting. The burr might break loose during test or
operation, and might pose an ignition source or cause an inlet valve
to jam. This AD was also prompted by a determination that the
affected parts may be installed on airplanes outside the
applicability of AD 2013-07-09. The FAA is issuing this AD to
address this possible ignition source, which could result in an
oxygen-fed fire; or an inlet valve jam in a crew oxygen mask stowage
box unit, which could result in restricted flow of oxygen.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Retained Inspection and Corrective Action, With No Changes
This paragraph restates the requirements of paragraph (g) of AD
2013-07-09 with no changes. For The Boeing Company Model 737
airplanes as identified in Boeing Alert
[[Page 20624]]
Service Bulletin 737-35A1121, Revision 1, dated November 7, 2011;
The Boeing Company Model 747 airplanes as identified in Boeing Alert
Service Bulletin 747-35A2126, Revision 1, dated September 29, 2011;
and The Boeing Company Model 767 airplanes as identified in Boeing
Alert Service Bulletin 767-35A0057, Revision 1, dated November 17,
2011: Within 24 months after May 20, 2013 (the effective date of AD
2013-07-09), do a general visual inspection to determine if the
serial number of the crew oxygen mask stowage box unit is identified
in the Appendix of Intertechnique Service Bulletin MXP1/4-35-175,
Revision 2, dated May 10, 2011, in accordance with the
Accomplishment Instructions of Boeing Alert Service Bulletin 737-
35A1121, Revision 1, dated November 7, 2011; Boeing Alert Service
Bulletin 747-35A2126, Revision 1, dated September 29, 2011; or
Boeing Alert Service Bulletin 767-35A0057, Revision 1, dated
November 17, 2011; as applicable. A review of airplane maintenance
records is acceptable in lieu of this inspection if the serial
number of the crew oxygen mask stowage box unit can be conclusively
determined from that review.
(1) If any crew oxygen mask stowage box unit has a serial number
identified in table 1 of the Appendix of Intertechnique Service
Bulletin MXP1/4-35-175, Revision 2, dated May 10, 2011: Before
further flight, replace the crew oxygen mask stowage box unit with a
new or serviceable unit in accordance with the Accomplishment
Instructions of Boeing Alert Service Bulletin 737-35A1121, Revision
1, dated November 7, 2011; Boeing Alert Service Bulletin 747-
35A2126, Revision 1, dated September 29, 2011; or Boeing Alert
Service Bulletin 767-35A0057, Revision 1, dated November 17, 2011;
as applicable.
(2) If any crew oxygen mask stowage box unit has a serial number
identified in table 2 of the Appendix of Intertechnique Service
Bulletin MXP1/4-35-175, Revision 2, dated May 10, 2011: Before
further flight, add the letter ``I'' to the end of the serial number
(identified as ``SER'') on the identification label, in accordance
with the Accomplishment Instructions of Intertechnique Service
Bulletin MXP1/4-35-175, Revision 2, dated May 10, 2011; and
reinstall in accordance with the Accomplishment Instructions of
Boeing Alert Service Bulletin 737-35A1121, Revision 1, dated
November 7, 2011; Boeing Alert Service Bulletin 747-35A2126,
Revision 1, dated September 29, 2011; or Boeing Alert Service
Bulletin 767-35A0057, Revision 1, dated November 17, 2011; as
applicable.
(3) If no crew oxygen mask stowage box unit has a serial number
identified in the Appendix of Intertechnique Service Bulletin MXP1/
4-35-175, Revision 2, dated May 10, 2011: Unless a records review
was done to determine the serial number, before further flight,
reinstall the crew oxygen mask stowage box unit, in accordance with
the Accomplishment Instructions of Boeing Alert Service Bulletin
737-35A1121, Revision 1, dated November 7, 2011; Boeing Alert
Service Bulletin 747-35A2126, Revision 1, dated September 29, 2011;
or Boeing Alert Service Bulletin 767-35A0057, Revision 1, dated
November 17, 2011; as applicable.
(h) Retained Parts Installation Prohibition, With No Changes
This paragraph restates the requirements of paragraph (h) of AD
2013-07-09 with no changes. For airplanes identified in paragraph
(g) of this AD: As of May 20, 2013 (the effective date of AD 2013-
07-09), no person may install a crew oxygen mask stowage box unit
with a serial number listed in the Appendix of Intertechnique
Service Bulletin MXP1/4-35-175, Revision 2, dated May 10, 2011, on
any airplane.
(i) New Inspection and Corrective Action
For airplanes other than those identified in paragraph (g) of
this AD: Within 24 months after the effective date of this AD, do a
general visual inspection to determine if the serial number of the
crew oxygen mask stowage box unit is identified in the Appendix of
Intertechnique Service Bulletin MXP1/4-35-175, Revision 2, dated May
10, 2011. A review of airplane maintenance records is acceptable in
lieu of this inspection if the serial number of the crew oxygen mask
stowage box unit can be conclusively determined from that review, or
if it can be conclusively determined that the serial number is not
one that is identified in the Appendix of Intertechnique Service
Bulletin MXP1/4-35-175, Revision 2, dated May 10, 2011.
(1) If any crew oxygen mask stowage box unit has a serial number
identified in table 1 of the Appendix of Intertechnique Service
Bulletin MXP1/4-35-175, Revision 2, dated May 10, 2011, or the crew
oxygen mask stowage box unit has a serial number that is unreadable
or undetermined: Before further flight, replace the crew oxygen mask
stowage box unit with a new or serviceable unit. If any crew oxygen
mask stowage box unit's serial number is unreadable or undetermined,
but the manufacturing date can conclusively be determined to be
outside the range of July 2007 through November 2007 inclusive, the
crew oxygen mask stowage box unit does not need to be replaced.
(2) If any crew oxygen mask stowage box unit has a serial number
identified in table 2 of the Appendix of Intertechnique Service
Bulletin MXP1/4-35-175, Revision 2, dated May 10, 2011: Before
further flight, add the letter ``I'' to the end of the serial number
(identified as ``SER'') on the identification label, in accordance
with the Accomplishment Instructions of Intertechnique Service
Bulletin MXP1/4-35-175, Revision 2, dated May 10, 2011; and
reinstall the crew oxygen mask stowage box unit.
(j) New Parts Installation Prohibition
(1) For airplanes other than those identified in paragraph (g)
of this AD: As of the effective date of this AD, no person may
install a crew oxygen mask stowage box unit with a serial number
identified in table 1 of the Appendix of Intertechnique Service
Bulletin MXP1/4-35-175, Revision 2, dated May 10, 2011; or any crew
oxygen mask stowage box unit with a serial number that is unreadable
or undetermined unless the manufacturing date can conclusively be
determined by a review of the airplane maintenance records to be
outside the range of July 2007 through November 2007 inclusive.
(2) For airplanes other than those identified in paragraph (g)
of this AD: As of the effective date of this AD, no person may
install a crew oxygen mask stowage box unit with a serial number
identified in table 2 of the Appendix of Intertechnique Service
Bulletin MXP1/4-35-175, Revision 2, dated May 10, 2011, on any
airplane, unless that crew oxygen mask stowage box unit has been
modified as required by paragraph (i)(2) of this AD.
(k) Alternative Methods of Compliance (AMOCs)
(1) The Manager, Seattle ACO 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 local Flight Standards Office, as
appropriate. If sending information directly to the manager of the
certification office, send it to the attention of the person
identified in paragraph (l) 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) An AMOC that provides an acceptable level of safety may be
used for any repair, modification, or alteration required by this AD
if it is approved by the Boeing Company Organization Designation
Authorization (ODA) that has been authorized by the Manager, Seattle
ACO Branch, FAA, to make those findings. To be approved, the repair
method, modification deviation, or alteration deviation must meet
the certification basis of the airplane, and the approval must
specifically refer to this AD.
(4) AMOCs approved previously for AD 2013-07-09 are approved as
AMOCs for the corresponding provisions of this AD.
(l) Related Information
For more information about this AD, contact Nicole Tsang,
Aerospace Engineer, Cabin Safety and Environmental Systems Section,
FAA, Seattle ACO Branch, 2200 South 216th St., Des Moines, WA 98198;
phone and fax: 206-231-3959; email: [email protected].
(m) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the service information listed
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do
the actions required by this AD, unless this AD specifies otherwise.
(3) The following service information was approved for IBR on
May 20, 2013 (78 FR 22178, April 15, 2013).
(i) Boeing Alert Service Bulletin 737-35A1121, Revision 1, dated
November 7, 2011.
(ii) Boeing Alert Service Bulletin 747-35A2126, Revision 1,
dated September 29, 2011.
[[Page 20625]]
(iii) Boeing Alert Service Bulletin 767-35A0057, Revision 1,
dated November 17, 2011.
(iv) Intertechnique Service Bulletin MXP1/4-35-175, Revision 2,
dated May 10, 2011.
(4) For Boeing service information identified in this AD,
contact Boeing Commercial Airplanes, Attention: Contractual & Data
Services (C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA
90740-5600; telephone 562-797-1717; internet https://www.myboeingfleet.com.
(5) For Intertechnique service information identified in this
AD, contact Aerotechnics, 61 rue Pierre Curie BP 1, 78373 Plaisir,
CEDEX, France; phone: +33 1 6486 6964; internet https://www.zodiacaerospace.com.
(6) You may view this service information at the FAA,
Airworthiness Products Section, Operational Safety Branch, 2200
South 216th St., Des Moines, WA. For information on the availability
of this material at the FAA, call 206-231-3195.
(7) You may view this service information that is incorporated
by reference at the National Archives and Records Administration
(NARA). For information on the availability of this material at
NARA, email [email protected], or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued on March 30, 2021.
Ross Landes,
Deputy Director for Regulatory Operations, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021-08213 Filed 4-20-21; 8:45 am]
BILLING CODE 4910-13-P