Airworthiness Directives; The Boeing Company Airplanes, 73448-73452 [2022-26080]
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Federal Register / Vol. 87, No. 229 / Wednesday, November 30, 2022 / Rules and Regulations
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
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 adding
the following new airworthiness
directive:
■
2022–23–07 BAE Systems (Operations)
Limited Amendment 39–22234; Docket
No. FAA–2022–1053; Project Identifier
MCAI–2022–00200–T.
(a) Effective Date
This airworthiness directive (AD) is
effective January 4, 2023.
(b) Affected ADs
None.
(c) Applicability
This AD applies to all BAE Systems
(Operations) Limited Model BAe 146–100A,
–200A, and –300A airplanes, certificated in
any category.
(d) Subject
Air Transport Association (ATA) of
America Code 22, Auto-Flight.
(e) Unsafe Condition
This AD was prompted by a finding that
when the autopilot is engaged, the
architecture of the autopilot system does not
automatically disconnect the autopilot in
response to pilot application of a pitch input
or when the electric pitch trim switch on
either pilot control wheel is operated. The
FAA is issuing this AD to address continued
autopilot engagement after flightcrew input
to disengage the autopilot, which could lead
to reduced controllability of the airplane.
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(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Modification
Within 12 months after the effective date
of this AD, modify the autopilot engagement
circuit in accordance with the
Accomplishment Instructions of BAE
Systems (Operations) Limited Modification
Service Bulletin SB.22–072–36262A, dated
September 14, 2021.
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(h) No Reporting Requirement
Although BAE Systems (Operations)
Limited Modification Service Bulletin SB.22–
072–36262A, dated September 14, 2021,
specifies to submit certain information to the
manufacturer, this AD does not include that
requirement.
(i) Other AD Provisions
The following provisions also apply to this
AD:
(1) Alternative Methods of Compliance
(AMOCs): The Manager, International
Validation 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 International Validation Branch, send
it to the attention of the person identified in
paragraph (j)(2) of this AD. Information may
be emailed to: 9-AVS-AIR-730-AMOC@
faa.gov. Before using any approved AMOC,
notify your appropriate principal inspector,
or lacking a principal inspector, the manager
of the responsible Flight Standards Office.
(2) Contacting the Manufacturer: For any
requirement in this AD to obtain instructions
from a manufacturer, the instructions must
be accomplished using a method approved
by the Manager, International Validation
Branch, FAA; or the United Kingdom Civil
Aviation Authority (U.K. CAA); or BAE
Systems (Operations) Limited’s U.K. CAA
Design Organization Approval (DOA). If
approved by the DOA, the approval must
include the DOA-authorized signature.
(j) Additional Information
(1) Refer to U.K. CAA AD G–2022–0002,
dated February 11, 2022, for related
information. This U.K. CAA AD may be
found in the AD docket at regulations.gov
under Docket No. FAA–2022–1053.
(2) For more information about this AD,
contact Todd Thompson, Aerospace
Engineer, Large Aircraft Section, FAA,
International Validation Branch, 2200 South
216th St., Des Moines, WA 98198; telephone
206–231–3228; email todd.thompson@
faa.gov.
(k) Material Incorporated by Reference
(1) The Director of the Federal Register
approved the incorporation by reference 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.
(i) BAE Systems (Operations) Limited
Modification Service Bulletin SB.22–072–
36262A, dated September 14, 2021.
(ii) [Reserved]
(3) For service information identified in
this AD, contact BAE Systems (Operations)
Limited, Customer Information Department,
Prestwick International Airport, Ayrshire,
KA9 2RW, Scotland, United Kingdom;
telephone +44 1292 675207; fax +44 1292
675704; email RApublications@
baesystems.com; website baesystems.com/
Businesses/RegionalAircraft/index.htm.
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(4) 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.
(5) 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 fr.inspection@nara.gov, or go to:
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued on November 1, 2022.
Christina Underwood,
Acting Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2022–26083 Filed 11–29–22; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2022–0156; Project
Identifier AD–2021–01474–T; Amendment
39–22237; AD 2022–23–10]
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) 2021–06–
03, which applied to all The Boeing
Company Model 777F series airplanes.
AD 2021–06–03 required deactivating
the potable water system. This AD was
prompted by a report of a water supply
line that detached at a certain joint
located above an electronic equipment
(EE) cooling filter, leading to water
intrusion into the forward EE bay. This
AD retains the actions required by AD
2021–06–03 and requires installing a
shroud to the water supply line in the
forward cargo compartment, and
performing a leak test of the potable
water system. For certain airplanes, this
AD also requires replacing tubes and
hoses from the water supply line and
installing a shroud to the water return
line. The FAA is issuing this AD to
address the unsafe condition on these
products.
DATES: This AD is effective January 4,
2023.
The Director of the Federal Register
approved the incorporation by reference
of certain publications listed in this AD
as of January 4, 2023.
The Director of the Federal Register
approved the incorporation by reference
SUMMARY:
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Federal Register / Vol. 87, No. 229 / Wednesday, November 30, 2022 / Rules and Regulations
of a certain other publication listed in
this AD as of March 5, 2021 (86 FR
12809, March 5, 2021).
ADDRESSES:
AD Docket: You may examine the AD
docket at regulations.gov under Docket
No. FAA–2022–0156; 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.
Material Incorporated by Reference:
• For 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; website
myboeingfleet.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 at
regulations.gov under Docket No. FAA–
2022–0156.
Examining the AD Docket
You may examine the AD docket at
regulations.gov by searching for and
locating Docket No. FAA–2022–0156; 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:
Courtney Tuck, Aerospace Engineer,
Cabin Safety and Environmental
Systems Section, FAA, Seattle ACO
Branch, 2200 South 216th St., Des
Moines, WA 98198; phone and fax: 206–
231–3986; email: Courtney.K.Tuck@
faa.gov.
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SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to supersede AD 2021–06–03,
Amendment 39–21469 (86 FR 12809,
March 5, 2021) (AD 2021–06–03). AD
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2021–06–03 applied to all The Boeing
Company Model 777F series airplanes.
The NPRM published in the Federal
Register on March 25, 2022 (87 FR
17035). The NPRM was prompted by the
development of new actions that result
in a need to modify AD 2021–06–03. AD
2021–06–03 was issued because of a
report of a water supply line that
detached at a certain joint located above
an EE cooling filter, leading to water
intrusion into the forward EE bay. In the
NPRM, the FAA proposed to continue to
require deactivating the potable water
system. The NPRM also proposed to
require installing a shroud to the water
supply line in the forward cargo
compartment, and performing a leak test
of the potable water system. For certain
airplanes, the NPRM also proposed to
require replacing tubes and hoses from
the water supply line and installing a
shroud to the water return line. The
FAA is issuing this AD to address water
entering the EE cooling system via the
cooling filter, which can affect multiple
EE bay racks and line replaceable units
(LRUs), resulting in loss of functionality
or inaccurate output of critical electrical
systems and possible loss of control of
the airplane.
Discussion of Final Airworthiness
Directive
Comments
The FAA received comments from the
Air Line Pilots Association,
International (ALPA), and an
individual, who supported the NPRM
without change.
The FAA received additional
comments from three commenters,
including Boeing, FedEx, and All
Nippon Airways. The following
presents the comments received on the
NPRM and the FAA’s response to each
comment.
Request To Change the Affected
Airplanes for Certain Requirements
FedEx and Boeing requested that the
FAA change the affected airplanes in
paragraph (g)(2) of the proposed AD
from ‘‘L/Ns [line numbers] 960 and
subsequent.’’ to ‘‘L/N 960 through L/N
1689.’’ FedEx noted that the airplanes
affected by paragraph (g)(2) of the
proposed AD should reflect the
effectivity of Boeing Alert Requirements
Bulletin 777–38A0048 RB, dated
October 18, 2021. FedEx stated that if
the affected airplanes are not revised,
then the final rule will require Boeing
Alert Requirements Bulletin 777–
38A0048 RB, dated October 18, 2021, to
be accomplished on aircraft to which it
is not effective. Boeing pointed out that
the FAA has previously accepted this
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73449
alternative method of compliance
(AMOC) to AD 2021–06–03 for L/N(s)
1692 and on, which have incorporated
Type Design Change PRR 62701 Part B.
The FAA agrees with the request for
the reasons stated above. The FAA has
changed paragraph (g)(2) of this AD
from ‘‘L/Ns 960 and subsequent’’ to ‘‘L/
N 960 through L/N 1689 inclusive.’’
Request To Change the Compliance
Time of an Approved AMOC
FedEx requested that the FAA allow
the AMOC to AD 2021–06–03 that
included Boeing Alert Service Bulletin
777–38A0047, dated March 30, 2021, to
remain valid for 24 months from the
published date of Boeing Alert Service
Bulletin 777–38A0047, dated March 30,
2021, in this AD. FedEx reasoned that
the AMOC to AD 2021–06–03 will
expire earlier than actions specified in
Boeing Alert Requirements Bulletin
777–38A0048 RB, dated October 18,
2021, can reasonably be accomplished.
All Nippon Airways requested that the
AMOC to AD 2021–06–03 for Boeing
Alert Service Bulletin 777–38A0047,
dated March 30, 2021, remain valid for
24 months from the effective date of this
AD. All Nippon Airways contended that
if this AD does not allow Boeing Alert
Service Bulletin 777–38A0047, dated
March 30, 2021, to remain valid, certain
airplanes will be grounded. All Nippon
Airways also noted that if this AD
continues to allow Boeing Alert Service
Bulletin 777–38A0047, dated March 30,
2021, as an AMOC to this AD, but
without extending the compliance time,
certain airplanes may be grounded due
to the time needed to submit and
validate the AMOC Notice to its local
authority.
Alternatively, All Nippon Airways
requested that this AD be issued after
the expiration of the interim action of
the AMOC to AD 2021–06–03 that
includes Boeing Alert Service Bulletin
777–38A0047, dated March 30, 2021.
All Nippon Airways contended that if
this AD does not allow the AMOC that
specifies Boeing Alert Service Bulletin
777–38A0047, dated March 30, 2021, to
remain valid, certain airplanes will be
grounded for the reasons described
above.
The FAA agrees with the intent
behind the requests but cannot change
the existing AMOC to provide this relief
to operators. However, the FAA is
considering issuing an amended AMOC
that would extend the compliance time
of Boeing Alert Service Bulletin 777–
38A0047, dated March 30, 2021. If this
amended AMOC is issued, then it may
extend the 24-month compliance time to
align with the compliance time of
Boeing Alert Requirements Bulletin
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Federal Register / Vol. 87, No. 229 / Wednesday, November 30, 2022 / Rules and Regulations
777–38A0048 RB, dated October 18,
2021. The FAA has added paragraph
(n)(4) of this AD to state that ‘‘AMOCs
approved for AD 2021–06–03 are
approved as AMOCs for the
corresponding provisions of this AD.’’
Additionally, the FAA does not agree
to delay the issuance of this AD until
after the expiration of the interim action
of the AMOC to AD 2021–06–03 that
includes Boeing Alert Service Bulletin
777–38A0047, dated March 30, 2021.
An AD is issued to correct an unsafe
condition. The unsafe condition will be
corrected using Boeing Alert
Requirements Bulletin 777–38A0048
RB, dated October 18, 2021. The FAA
has not changed the AD in this regard.
Request To Reference the Optional
Interim Action of AD 2021–06–03
FedEx and Boeing requested that the
FAA include a paragraph in this AD that
allows for an optional interim action in
accordance with Boeing Alert Service
Bulletin 777–38A0047, dated March 30,
2021. FedEx and Boeing maintained that
this AD should reference Boeing Alert
Service Bulletin 777–38A0047, dated
March 30, 2021, which was included in
an AMOC to AD 2021–06–03. FedEx
noted that by including the interim
action of Boeing Alert Service Bulletin
777–38A0047, dated March 30, 2021, in
this final rule, the information will
provide a more complete picture of the
entire timeline for future reference.
The FAA agrees for the reasons
provided. The FAA has previously
approved the AMOC to AD 2021–06–03
regarding the installation of a temporary
water line shroud in accordance with
Boeing Alert Service Bulletin 777–
and performing a leak test of the potable
water system.
The FAA also reviewed Boeing Alert
Service Bulletin 777–38A0047, dated
March 30, 2021. This service
information describes procedures for
installing a shroud around the water
supply line and gray water line at
station (STA) 529 to STA 634 in the
forward cargo compartment, installing a
shroud around the water return line at
STA 550 to STA 620 in the forward
cargo compartment, post-installation
inspection requirements (which,
depending on the shroud location,
include a detailed inspection for any
evidence of a water leak and a general
visual inspection to determine if the
shroud is in serviceable condition), and
corrective actions (which include doing
applicable corrective actions and a leak
test until no leak is detected, and doing
applicable corrective actions to put the
shroud back to serviceable condition).
This AD also requires Boeing Multi
Operator Message MOM–MOM–21–
0089–01B, dated February 26, 2021,
which the Director of the Federal
Register approved for incorporation by
reference as of March 5, 2021 (86 FR
12809, March 5, 2021).
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 ADDRESSES.
38A0047, dated March 30, 2021. As a
result, the FAA has added paragraph (l)
of this AD, which allows the activation
of the potable water system provided
that installation of a shroud around the
water supply line and gray water line,
installation of a shroud around the
water return line, and post-installation
inspections and applicable corrective
actions are done in accordance with
Boeing Alert Service Bulletin 777–
38A0047, dated March 30, 2021; and
provided that the potable water system
is deactivated within a certain
compliance time. The FAA has also
redesignated subsequent paragraphs
accordingly. The FAA has also revised
the Costs of Compliance section to
include the cost estimates for this
optional action.
Conclusion
The FAA reviewed the relevant data,
considered any comments received, and
determined that air safety requires
adopting this AD as proposed. Except
for minor editorial changes, and any
other changes described previously, this
AD is adopted as proposed in the
NPRM. None of the changes will
increase the economic burden on any
operator.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Boeing Alert
Requirements Bulletin 777–38A0048
RB, dated October 18, 2021. This service
information specifies procedures for
replacing tubes and hoses from the
water supply line and installing a
shroud to the water supply and return
lines in the forward cargo compartment
Costs of Compliance
The FAA estimates that this AD
affects 58 airplanes of U.S. registry. The
FAA estimates the following costs to
comply with this AD:
ESTIMATED COSTS
Action
Labor cost
Parts cost
Cost per
product
Cost on U.S.
operators
Deactivation of potable water system
(retained actions from AD 2021–06–
03).
Replace tubes and hoses, and install
shroud (new action).
Potable water system leak test (new action).
2 work-hours × $85 per hour = $170 .........................
$0 ............................
$170 ........................
$9,860.
Up to 12 work-hours × $85 per hour = Up to $1,020
Up to $1,850 ...........
Up to $2,870 ...........
Up to $166,460.
2 work-hours × $85 per hour = $170 .........................
$0 ............................
$170 ........................
$9,860.
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ESTIMATED COSTS FOR OPTIONAL ACTIONS
Action
Labor cost
Parts cost
Install shrouds ...................................
Post installation inspections ..............
On-condition actions ..........................
Up to 2 work-hours × $85 per hour = $170 .........................................
Up to 3 work-hours × $85 per hour = $255 per inspection cycle ........
Up to 11 work-hours × $85 per hour = $935 .......................................
Up to $1,380 ......
$0 .......................
$0 .......................
The FAA has included all known
costs in its cost estimate. According to
the manufacturer, however, some or all
of the costs of this AD may be covered
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under warranty, thereby reducing the
cost impact on affected operators.
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Cost per product
Up to $1,550.
Up to $255 per inspection cycle.
Up to $935.
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
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Federal Register / Vol. 87, No. 229 / Wednesday, November 30, 2022 / Rules and Regulations
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
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
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§ 39.13
[Amended]
2. The FAA amends § 39.13 by:
a. Removing Airworthiness Directive
(AD) 2021–06–03, Amendment 39–
21469 (86 FR 12809, March 5, 2021);
and
■ b. Adding the following new AD:
■
■
2022–23–10 The Boeing Company:
Amendment 39–22237; Docket No.
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FAA–2022–0156; Project Identifier AD–
2021–01474–T.
(a) Effective Date
This airworthiness directive (AD) is
effective January 4, 2023.
(b) Affected ADs
This AD replaces AD 2021–06–03,
Amendment 39–21469 (86 FR 12809, March
5, 2021) (AD 2021–06–03).
(c) Applicability
This AD applies to all The Boeing
Company Model 777F series airplanes,
certificated in any category.
(d) Subject
Air Transport Association (ATA) of
America Code 38, Water/waste.
(e) Unsafe Condition
This AD was prompted by a report of a
water supply line that detached at a certain
joint located above an electronic equipment
(EE) cooling filter, leading to water intrusion
into the forward EE bay. This AD was also
prompted by the development of new actions
to address the unsafe condition. The FAA is
issuing this AD to address water entering the
EE cooling system via the cooling filter,
which can affect multiple EE bay racks and
line replaceable units (LRUs), resulting in
loss of functionality or inaccurate output of
critical electrical systems and possible loss of
control of the airplane.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Retained Deactivation of Potable Water
System, With No Changes
This paragraph restates the requirements of
paragraph (g) of AD 2021–06–03, with no
changes. For the airplanes identified in
paragraphs (g)(1) and (2) of this AD: Within
5 days after March 5, 2021 (the effective date
of AD 2021–06–03), deactivate the potable
water system, in accordance with Boeing
Multi Operator Message MOM–MOM–21–
0089–01B, dated February 26, 2021 (Boeing
MOM–MOM–21–0089–01B).
(1) Line numbers (L/Ns) 959 and earlier on
which the actions specified in Boeing Service
Bulletin 777–38–0042 have been
accomplished.
(2) L/Ns 960 through L/N 1689 inclusive.
Note 1 to paragraph (g): Guidance on
deactivating the potable water system can be
found in Boeing 777 Aircraft Maintenance
Manual (AMM) Task 38–10–00–040–801.
(h) Retained Installation Prohibition, With
No Changes
This paragraph restates the requirements of
paragraph (h) of AD 2021–06–03, with no
changes. For airplanes not identified in
paragraph (g) of this AD: As of March 5, 2021
(the effective date of AD 2021–06–03),
accomplishment of the actions specified in
Boeing Service Bulletin 777–38–0042 is
prohibited.
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(i) Retained Reporting Provisions, With No
Changes
This paragraph restates the requirements of
paragraph (i) of AD 2021–06–03, with no
changes. Although Boeing MOM–MOM–21–
0089–01B specifies to report inspection
findings, this AD does not require any report.
(j) New Required Actions
Except as specified by paragraph (k) of this
AD: At the applicable times specified in the
‘‘Compliance’’ paragraph of Boeing Alert
Requirements Bulletin 777–38A0048 RB,
dated October 18, 2021, do all applicable
actions identified in, and in accordance with,
the Accomplishment Instructions of Boeing
Alert Requirements Bulletin 777–38A0048
RB, dated October 18, 2021.
Note 1 to paragraph (j): Guidance for
accomplishing the actions required by this
AD can be found in Boeing Alert Service
Bulletin 777–38A0048, dated October 18,
2021, which is referred to in Boeing Alert
Requirements Bulletin 777–38A0048 RB,
dated October 18, 2021.
(k) Exceptions to Service Information
Specifications
Where the Compliance Time columns of
the tables in the ‘‘Compliance’’ paragraph of
Boeing Alert Requirements Bulletin 777–
38A0048 RB, dated October 18, 2021, use the
phrase ‘‘the Original Issue date of
Requirements Bulletin 777–38A0048 RB,’’
this AD requires using ‘‘the effective date of
this AD.’’
(l) Optional Action for Deactivation of
Potable Water System
Accomplishment of the installation of a
shroud around the water supply line and
gray water line at station (STA) 529 to STA
634 in the forward cargo compartment, and
a shroud around the water return line at STA
550 to STA 620 in the forward cargo
compartment, as specified in the
Accomplishment Instructions of Boeing Alert
Service Bulletin 777–38A0047, dated March
30, 2021, terminates the potable water system
deactivation required by paragraph (g) of this
AD, provided the conditions specified in
paragraphs (l)(1) and (2) of this AD are met.
(1) Repetitive inspections and applicable
corrective actions are done at the applicable
times specified in Table 1 and Table 2 of
paragraph 1.E, ‘‘Compliance,’’ of Boeing Alert
Service Bulletin 777–38A0047, dated March
30, 2021, and in accordance with the
Accomplishment Instructions of Boeing Alert
Service Bulletin 777–38A0047, dated March
30, 2021.
(2) The potable water system is deactivated
in accordance with Boeing MOM–MOM–21–
0089–01B, within 42 months after March 30,
2021 (the issue date of Boeing Alert Service
Bulletin 777–38A0047, dated March 30,
2021).
(m) Terminating Action for Deactivation of
Potable Water System
Accomplishment of the required actions
specified in the Accomplishment
Instructions of Boeing Alert Requirements
Bulletin 777–38A0048 RB, dated October 18,
2021, terminates the potable water system
deactivation required by paragraph (g) of this
AD.
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Federal Register / Vol. 87, No. 229 / Wednesday, November 30, 2022 / Rules and Regulations
(n) 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 responsible 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 (o) 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 for AD 2021–06–03
are approved as AMOCs for the
corresponding provisions of this AD.
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 fr.inspection@nara.gov, or go to:
www.archives.gov/federal-register/cfr/ibrlocations.html.
(o) Related Information
For more information about this AD,
contact Courtney Tuck, Aerospace Engineer,
Cabin Safety and Environmental Systems
Section, FAA, Seattle ACO Branch, 2200
South 216th St., Des Moines, WA 98198;
phone and fax: 206–231–3986; email:
Courtney.K.Tuck@faa.gov.
AGENCY:
(p) 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 January 4, 2023.
(i) Boeing Alert Service Bulletin 777–
38A0047, dated March 30, 2021.
(ii) Boeing Alert Requirements Bulletin
777–38A0048 RB, dated October 18, 2021.
(4) The following service information was
approved for IBR on March 5, 2021 (86 FR
12809, March 5, 2021).
(i) Boeing Multi Operator Message MOM–
MOM–21–0089–01B, dated February 26,
2021.
(ii) [Reserved]
(5) For 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; website
myboeingfleet.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
VerDate Sep<11>2014
15:58 Nov 29, 2022
Jkt 259001
Issued on November 1, 2022.
Christina Underwood,
Acting Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2022–26080 Filed 11–29–22; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2022–0103; Project
Identifier AD–2021–00977–T; Amendment
39–22238; AD 2022–23–11]
RIN 2120–AA64
Airworthiness Directives; The Boeing
Company Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
The FAA is adopting a new
airworthiness directive (AD) for certain
The Boeing Company Model 777
airplanes. This AD was prompted by
reports of discrepancies between the
center wing tank (CWT) fuel quantity, as
indicated by the fuel quantity indicating
system (FQIS), and the refueling truck
uploaded fuel amount, followed by
certain engine-indicating and crewalerting system (EICAS) messages. This
AD requires installing new software in
the fuel quantity processor unit (FQPU),
or replacing the FQPU with one that
includes new software, depending on
airplane configuration; doing a software
version check; and doing a FQPU
operational check, depending on
airplane configuration. This AD also
prohibits the installation of certain
FQPUs on certain airplanes. The FAA is
issuing this AD to address the unsafe
condition on these products.
DATES: This AD is effective January 4,
2023.
The Director of the Federal Register
approved the incorporation by reference
of a certain publication listed in this AD
as of January 4, 2023.
ADDRESSES:
AD Docket: You may examine the AD
docket at regulations.gov under Docket
No. FAA–2022–0103; or in person at
Docket Operations between 9 a.m. and
SUMMARY:
PO 00000
Frm 00020
Fmt 4700
Sfmt 4700
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.
Material Incorporated by Reference:
• For service information identified
in this final rule, contact Kevin Nguyen,
Aerospace Engineer, Propulsion
Section, FAA, Seattle ACO Branch, 2200
South 216th St., Des Moines, WA 98198;
phone and fax: 206–231–3555; email:
kevin.nguyen@faa.gov.
• 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 at
regulations.gov under Docket No. FAA–
2022–0103.
FOR FURTHER INFORMATION CONTACT:
Kevin Nguyen, Aerospace Engineer,
Propulsion Section, FAA, Seattle ACO
Branch, 2200 South 216th St., Des
Moines, WA 98198; phone and fax: 206–
231–3555; email: kevin.nguyen@faa.gov.
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would
apply to certain The Boeing Company
Model 777 airplanes. The NPRM
published in the Federal Register on
March 21, 2022 (87 FR 15902). The
NPRM was prompted by reports of
discrepancies between the CWT fuel
quantity, as indicated by the FQIS, and
the refueling truck uploaded fuel
amount, followed by certain EICAS
messages. In the NPRM, the FAA
proposed to require installing new
software in the FQPU, or replacing the
FQPU with one that includes new
software, depending on airplane
configuration; doing a software version
check; and doing a FQPU operational
check, depending on airplane
configuration. In the NPRM, the FAA
also proposed to prohibit the
installation of certain FQPUs on certain
airplanes. The FAA is issuing this AD
to address discrepancies in the CWT
FQIS, which can result in an airplane
being dispatched with insufficient fuel
in the CWT and with the flight crew
unaware of the insufficient fuel prior to
departure. This condition, coupled with
continued flight to the destination
airport after receiving EICAS messages
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[Federal Register Volume 87, Number 229 (Wednesday, November 30, 2022)]
[Rules and Regulations]
[Pages 73448-73452]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-26080]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2022-0156; Project Identifier AD-2021-01474-T;
Amendment 39-22237; AD 2022-23-10]
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) 2021-06-
03, which applied to all The Boeing Company Model 777F series
airplanes. AD 2021-06-03 required deactivating the potable water
system. This AD was prompted by a report of a water supply line that
detached at a certain joint located above an electronic equipment (EE)
cooling filter, leading to water intrusion into the forward EE bay.
This AD retains the actions required by AD 2021-06-03 and requires
installing a shroud to the water supply line in the forward cargo
compartment, and performing a leak test of the potable water system.
For certain airplanes, this AD also requires replacing tubes and hoses
from the water supply line and installing a shroud to the water return
line. The FAA is issuing this AD to address the unsafe condition on
these products.
DATES: This AD is effective January 4, 2023.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of January 4,
2023.
The Director of the Federal Register approved the incorporation by
reference
[[Page 73449]]
of a certain other publication listed in this AD as of March 5, 2021
(86 FR 12809, March 5, 2021).
ADDRESSES:
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2022-0156; 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.
Material Incorporated by Reference:
For 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; website myboeingfleet.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 at
regulations.gov under Docket No. FAA-2022-0156.
Examining the AD Docket
You may examine the AD docket at regulations.gov by searching for
and locating Docket No. FAA-2022-0156; 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: Courtney Tuck, Aerospace Engineer,
Cabin Safety and Environmental Systems Section, FAA, Seattle ACO
Branch, 2200 South 216th St., Des Moines, WA 98198; phone and fax: 206-
231-3986; email: [email protected].
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 to supersede AD 2021-06-03, Amendment 39-21469 (86 FR
12809, March 5, 2021) (AD 2021-06-03). AD 2021-06-03 applied to all The
Boeing Company Model 777F series airplanes. The NPRM published in the
Federal Register on March 25, 2022 (87 FR 17035). The NPRM was prompted
by the development of new actions that result in a need to modify AD
2021-06-03. AD 2021-06-03 was issued because of a report of a water
supply line that detached at a certain joint located above an EE
cooling filter, leading to water intrusion into the forward EE bay. In
the NPRM, the FAA proposed to continue to require deactivating the
potable water system. The NPRM also proposed to require installing a
shroud to the water supply line in the forward cargo compartment, and
performing a leak test of the potable water system. For certain
airplanes, the NPRM also proposed to require replacing tubes and hoses
from the water supply line and installing a shroud to the water return
line. The FAA is issuing this AD to address water entering the EE
cooling system via the cooling filter, which can affect multiple EE bay
racks and line replaceable units (LRUs), resulting in loss of
functionality or inaccurate output of critical electrical systems and
possible loss of control of the airplane.
Discussion of Final Airworthiness Directive
Comments
The FAA received comments from the Air Line Pilots Association,
International (ALPA), and an individual, who supported the NPRM without
change.
The FAA received additional comments from three commenters,
including Boeing, FedEx, and All Nippon Airways. The following presents
the comments received on the NPRM and the FAA's response to each
comment.
Request To Change the Affected Airplanes for Certain Requirements
FedEx and Boeing requested that the FAA change the affected
airplanes in paragraph (g)(2) of the proposed AD from ``L/Ns [line
numbers] 960 and subsequent.'' to ``L/N 960 through L/N 1689.'' FedEx
noted that the airplanes affected by paragraph (g)(2) of the proposed
AD should reflect the effectivity of Boeing Alert Requirements Bulletin
777-38A0048 RB, dated October 18, 2021. FedEx stated that if the
affected airplanes are not revised, then the final rule will require
Boeing Alert Requirements Bulletin 777-38A0048 RB, dated October 18,
2021, to be accomplished on aircraft to which it is not effective.
Boeing pointed out that the FAA has previously accepted this
alternative method of compliance (AMOC) to AD 2021-06-03 for L/N(s)
1692 and on, which have incorporated Type Design Change PRR 62701 Part
B.
The FAA agrees with the request for the reasons stated above. The
FAA has changed paragraph (g)(2) of this AD from ``L/Ns 960 and
subsequent'' to ``L/N 960 through L/N 1689 inclusive.''
Request To Change the Compliance Time of an Approved AMOC
FedEx requested that the FAA allow the AMOC to AD 2021-06-03 that
included Boeing Alert Service Bulletin 777-38A0047, dated March 30,
2021, to remain valid for 24 months from the published date of Boeing
Alert Service Bulletin 777-38A0047, dated March 30, 2021, in this AD.
FedEx reasoned that the AMOC to AD 2021-06-03 will expire earlier than
actions specified in Boeing Alert Requirements Bulletin 777-38A0048 RB,
dated October 18, 2021, can reasonably be accomplished. All Nippon
Airways requested that the AMOC to AD 2021-06-03 for Boeing Alert
Service Bulletin 777-38A0047, dated March 30, 2021, remain valid for 24
months from the effective date of this AD. All Nippon Airways contended
that if this AD does not allow Boeing Alert Service Bulletin 777-
38A0047, dated March 30, 2021, to remain valid, certain airplanes will
be grounded. All Nippon Airways also noted that if this AD continues to
allow Boeing Alert Service Bulletin 777-38A0047, dated March 30, 2021,
as an AMOC to this AD, but without extending the compliance time,
certain airplanes may be grounded due to the time needed to submit and
validate the AMOC Notice to its local authority.
Alternatively, All Nippon Airways requested that this AD be issued
after the expiration of the interim action of the AMOC to AD 2021-06-03
that includes Boeing Alert Service Bulletin 777-38A0047, dated March
30, 2021. All Nippon Airways contended that if this AD does not allow
the AMOC that specifies Boeing Alert Service Bulletin 777-38A0047,
dated March 30, 2021, to remain valid, certain airplanes will be
grounded for the reasons described above.
The FAA agrees with the intent behind the requests but cannot
change the existing AMOC to provide this relief to operators. However,
the FAA is considering issuing an amended AMOC that would extend the
compliance time of Boeing Alert Service Bulletin 777-38A0047, dated
March 30, 2021. If this amended AMOC is issued, then it may extend the
24-month compliance time to align with the compliance time of Boeing
Alert Requirements Bulletin
[[Page 73450]]
777-38A0048 RB, dated October 18, 2021. The FAA has added paragraph
(n)(4) of this AD to state that ``AMOCs approved for AD 2021-06-03 are
approved as AMOCs for the corresponding provisions of this AD.''
Additionally, the FAA does not agree to delay the issuance of this
AD until after the expiration of the interim action of the AMOC to AD
2021-06-03 that includes Boeing Alert Service Bulletin 777-38A0047,
dated March 30, 2021. An AD is issued to correct an unsafe condition.
The unsafe condition will be corrected using Boeing Alert Requirements
Bulletin 777-38A0048 RB, dated October 18, 2021. The FAA has not
changed the AD in this regard.
Request To Reference the Optional Interim Action of AD 2021-06-03
FedEx and Boeing requested that the FAA include a paragraph in this
AD that allows for an optional interim action in accordance with Boeing
Alert Service Bulletin 777-38A0047, dated March 30, 2021. FedEx and
Boeing maintained that this AD should reference Boeing Alert Service
Bulletin 777-38A0047, dated March 30, 2021, which was included in an
AMOC to AD 2021-06-03. FedEx noted that by including the interim action
of Boeing Alert Service Bulletin 777-38A0047, dated March 30, 2021, in
this final rule, the information will provide a more complete picture
of the entire timeline for future reference.
The FAA agrees for the reasons provided. The FAA has previously
approved the AMOC to AD 2021-06-03 regarding the installation of a
temporary water line shroud in accordance with Boeing Alert Service
Bulletin 777-38A0047, dated March 30, 2021. As a result, the FAA has
added paragraph (l) of this AD, which allows the activation of the
potable water system provided that installation of a shroud around the
water supply line and gray water line, installation of a shroud around
the water return line, and post-installation inspections and applicable
corrective actions are done in accordance with Boeing Alert Service
Bulletin 777-38A0047, dated March 30, 2021; and provided that the
potable water system is deactivated within a certain compliance time.
The FAA has also redesignated subsequent paragraphs accordingly. The
FAA has also revised the Costs of Compliance section to include the
cost estimates for this optional action.
Conclusion
The FAA reviewed the relevant data, considered any comments
received, and determined that air safety requires adopting this AD as
proposed. Except for minor editorial changes, and any other changes
described previously, this AD is adopted as proposed in the NPRM. None
of the changes will increase the economic burden on any operator.
Related Service Information Under 1 CFR Part 51
The FAA reviewed Boeing Alert Requirements Bulletin 777-38A0048 RB,
dated October 18, 2021. This service information specifies procedures
for replacing tubes and hoses from the water supply line and installing
a shroud to the water supply and return lines in the forward cargo
compartment and performing a leak test of the potable water system.
The FAA also reviewed Boeing Alert Service Bulletin 777-38A0047,
dated March 30, 2021. This service information describes procedures for
installing a shroud around the water supply line and gray water line at
station (STA) 529 to STA 634 in the forward cargo compartment,
installing a shroud around the water return line at STA 550 to STA 620
in the forward cargo compartment, post-installation inspection
requirements (which, depending on the shroud location, include a
detailed inspection for any evidence of a water leak and a general
visual inspection to determine if the shroud is in serviceable
condition), and corrective actions (which include doing applicable
corrective actions and a leak test until no leak is detected, and doing
applicable corrective actions to put the shroud back to serviceable
condition).
This AD also requires Boeing Multi Operator Message MOM-MOM-21-
0089-01B, dated February 26, 2021, which the Director of the Federal
Register approved for incorporation by reference as of March 5, 2021
(86 FR 12809, March 5, 2021).
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 ADDRESSES.
Costs of Compliance
The FAA estimates that this AD affects 58 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
Estimated Costs
--------------------------------------------------------------------------------------------------------------------------------------------------------
Action Labor cost Parts cost Cost per product Cost on U.S. operators
--------------------------------------------------------------------------------------------------------------------------------------------------------
Deactivation of potable water 2 work-hours x $85 per $0.......................... $170........................ $9,860.
system (retained actions from AD hour = $170.
2021-06-03).
Replace tubes and hoses, and Up to 12 work-hours x $85 Up to $1,850................ Up to $2,870................ Up to $166,460.
install shroud (new action). per hour = Up to $1,020.
Potable water system leak test 2 work-hours x $85 per $0.......................... $170........................ $9,860.
(new action). hour = $170.
--------------------------------------------------------------------------------------------------------------------------------------------------------
Estimated Costs for Optional Actions
--------------------------------------------------------------------------------------------------------------------------------------------------------
Action Labor cost Parts cost Cost per product
--------------------------------------------------------------------------------------------------------------------------------------------------------
Install shrouds...................... Up to 2 work-hours x $85 per hour = Up to $1,380.............. Up to $1,550.
$170.
Post installation inspections........ Up to 3 work-hours x $85 per hour = $0........................ Up to $255 per inspection cycle.
$255 per inspection cycle.
On-condition actions................. Up to 11 work-hours x $85 per hour = $0........................ Up to $935.
$935.
--------------------------------------------------------------------------------------------------------------------------------------------------------
The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some or all of the costs of
this AD may be covered under warranty, thereby reducing the cost impact
on affected operators.
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
[[Page 73451]]
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) 2021-06-03, Amendment 39-21469
(86 FR 12809, March 5, 2021); and
0
b. Adding the following new AD:
2022-23-10 The Boeing Company: Amendment 39-22237; Docket No. FAA-
2022-0156; Project Identifier AD-2021-01474-T.
(a) Effective Date
This airworthiness directive (AD) is effective January 4, 2023.
(b) Affected ADs
This AD replaces AD 2021-06-03, Amendment 39-21469 (86 FR 12809,
March 5, 2021) (AD 2021-06-03).
(c) Applicability
This AD applies to all The Boeing Company Model 777F series
airplanes, certificated in any category.
(d) Subject
Air Transport Association (ATA) of America Code 38, Water/waste.
(e) Unsafe Condition
This AD was prompted by a report of a water supply line that
detached at a certain joint located above an electronic equipment
(EE) cooling filter, leading to water intrusion into the forward EE
bay. This AD was also prompted by the development of new actions to
address the unsafe condition. The FAA is issuing this AD to address
water entering the EE cooling system via the cooling filter, which
can affect multiple EE bay racks and line replaceable units (LRUs),
resulting in loss of functionality or inaccurate output of critical
electrical systems and possible loss of control of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Retained Deactivation of Potable Water System, With No Changes
This paragraph restates the requirements of paragraph (g) of AD
2021-06-03, with no changes. For the airplanes identified in
paragraphs (g)(1) and (2) of this AD: Within 5 days after March 5,
2021 (the effective date of AD 2021-06-03), deactivate the potable
water system, in accordance with Boeing Multi Operator Message MOM-
MOM-21-0089-01B, dated February 26, 2021 (Boeing MOM-MOM-21-0089-
01B).
(1) Line numbers (L/Ns) 959 and earlier on which the actions
specified in Boeing Service Bulletin 777-38-0042 have been
accomplished.
(2) L/Ns 960 through L/N 1689 inclusive.
Note 1 to paragraph (g): Guidance on deactivating the potable
water system can be found in Boeing 777 Aircraft Maintenance Manual
(AMM) Task 38-10-00-040-801.
(h) Retained Installation Prohibition, With No Changes
This paragraph restates the requirements of paragraph (h) of AD
2021-06-03, with no changes. For airplanes not identified in
paragraph (g) of this AD: As of March 5, 2021 (the effective date of
AD 2021-06-03), accomplishment of the actions specified in Boeing
Service Bulletin 777-38-0042 is prohibited.
(i) Retained Reporting Provisions, With No Changes
This paragraph restates the requirements of paragraph (i) of AD
2021-06-03, with no changes. Although Boeing MOM-MOM-21-0089-01B
specifies to report inspection findings, this AD does not require
any report.
(j) New Required Actions
Except as specified by paragraph (k) of this AD: At the
applicable times specified in the ``Compliance'' paragraph of Boeing
Alert Requirements Bulletin 777-38A0048 RB, dated October 18, 2021,
do all applicable actions identified in, and in accordance with, the
Accomplishment Instructions of Boeing Alert Requirements Bulletin
777-38A0048 RB, dated October 18, 2021.
Note 1 to paragraph (j): Guidance for accomplishing the actions
required by this AD can be found in Boeing Alert Service Bulletin
777-38A0048, dated October 18, 2021, which is referred to in Boeing
Alert Requirements Bulletin 777-38A0048 RB, dated October 18, 2021.
(k) Exceptions to Service Information Specifications
Where the Compliance Time columns of the tables in the
``Compliance'' paragraph of Boeing Alert Requirements Bulletin 777-
38A0048 RB, dated October 18, 2021, use the phrase ``the Original
Issue date of Requirements Bulletin 777-38A0048 RB,'' this AD
requires using ``the effective date of this AD.''
(l) Optional Action for Deactivation of Potable Water System
Accomplishment of the installation of a shroud around the water
supply line and gray water line at station (STA) 529 to STA 634 in
the forward cargo compartment, and a shroud around the water return
line at STA 550 to STA 620 in the forward cargo compartment, as
specified in the Accomplishment Instructions of Boeing Alert Service
Bulletin 777-38A0047, dated March 30, 2021, terminates the potable
water system deactivation required by paragraph (g) of this AD,
provided the conditions specified in paragraphs (l)(1) and (2) of
this AD are met.
(1) Repetitive inspections and applicable corrective actions are
done at the applicable times specified in Table 1 and Table 2 of
paragraph 1.E, ``Compliance,'' of Boeing Alert Service Bulletin 777-
38A0047, dated March 30, 2021, and in accordance with the
Accomplishment Instructions of Boeing Alert Service Bulletin 777-
38A0047, dated March 30, 2021.
(2) The potable water system is deactivated in accordance with
Boeing MOM-MOM-21-0089-01B, within 42 months after March 30, 2021
(the issue date of Boeing Alert Service Bulletin 777-38A0047, dated
March 30, 2021).
(m) Terminating Action for Deactivation of Potable Water System
Accomplishment of the required actions specified in the
Accomplishment Instructions of Boeing Alert Requirements Bulletin
777-38A0048 RB, dated October 18, 2021, terminates the potable water
system deactivation required by paragraph (g) of this AD.
[[Page 73452]]
(n) 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 responsible 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 (o) 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 for AD 2021-06-03 are approved as AMOCs for
the corresponding provisions of this AD.
(o) Related Information
For more information about this AD, contact Courtney Tuck,
Aerospace Engineer, Cabin Safety and Environmental Systems Section,
FAA, Seattle ACO Branch, 2200 South 216th St., Des Moines, WA 98198;
phone and fax: 206-231-3986; email: [email protected].
(p) 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
January 4, 2023.
(i) Boeing Alert Service Bulletin 777-38A0047, dated March 30,
2021.
(ii) Boeing Alert Requirements Bulletin 777-38A0048 RB, dated
October 18, 2021.
(4) The following service information was approved for IBR on
March 5, 2021 (86 FR 12809, March 5, 2021).
(i) Boeing Multi Operator Message MOM-MOM-21-0089-01B, dated
February 26, 2021.
(ii) [Reserved]
(5) For 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; website myboeingfleet.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: www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued on November 1, 2022.
Christina Underwood,
Acting Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2022-26080 Filed 11-29-22; 8:45 am]
BILLING CODE 4910-13-P
