[Federal Register Volume 88, Number 25 (Tuesday, February 7, 2023)]
[Rules and Regulations]
[Pages 7851-7856]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2023-02526]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2022-1298; Project Identifier MCAI-2022-00437-T; 
Amendment 39-22313; AD 2023-02-06]
RIN 2120-AA64


Airworthiness Directives; BAE Systems (Operations) Limited 
Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

[[Page 7852]]


ACTION: Final rule.

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SUMMARY: The FAA is superseding Airworthiness Directives (ADs) 2005-15-
11, 2016-07-09, and 2018-19-24, which applied to all BAE Systems 
(Operations) Limited Model 4101 airplanes. AD 2005-15-11 required 
repetitive detailed and specialized inspections to detect fatigue 
damage in the fuselage, replacement of certain bolt assemblies, and 
corrective actions if necessary. AD 2016-07-09 required a revision of 
the maintenance or inspection program, as applicable. AD 2018-19-24 
required a one-time detailed inspection of a certain fuselage frame and 
repair, if necessary, and a revision of the maintenance or inspection 
program, as applicable, to incorporate new or revised maintenance 
instructions and airworthiness limitations. This AD was prompted by a 
determination that new or more restrictive airworthiness limitations 
are necessary. This AD continues to require the actions in ADs 2016-07-
09 and 2018-19-24 and requires revising the existing maintenance or 
inspection program, as applicable, to incorporate new or more 
restrictive airworthiness limitations. The FAA is issuing this AD to 
address the unsafe condition on these products.

DATES: This AD is effective March 14, 2023.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of March 14, 
2023.
    The Director of the Federal Register approved the incorporation by 
reference of certain other publications listed in this AD as of 
November 7, 2018 (83 FR 49786, October 3, 2018).
    The Director of the Federal Register approved the incorporation by 
reference of certain other publications listed in this AD as of May 16, 
2016 (81 FR 21263, April 11, 2016).

ADDRESSES: 
    AD Docket: You may examine the AD docket at regulations.gov under 
Docket No. FAA-2022-1298; 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, the mandatory continuing airworthiness 
information (MCAI), 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 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 [email protected]; website regional-services.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-2022-1298.

FOR FURTHER INFORMATION 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 
[email protected].

SUPPLEMENTARY INFORMATION: 

Background

    The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 
CFR part 39 to supersede AD 2005-15-11, Amendment 39-14200 (70 FR 
43025, July 26, 2005) (AD 2005-15-11). AD 2005-15-11 applied to all BAE 
Systems (Operations) Limited Model 4101 airplanes. AD 2005-15-11 
required repetitive detailed and specialized inspections to detect 
fatigue damage in the fuselage, replacement of certain bolt assemblies, 
and corrective actions if necessary. The FAA issued AD 2005-15-11 to 
address fatigue damage of the fuselage, door, engine nacelle, 
empennage, and wing structures, which could result in reduced 
structural integrity of the airplane.
    The FAA also proposed to supersede AD 2016-07-09, Amendment 39-
18454 (81 FR 21263, April 11, 2016) (AD 2016-07-09). AD 2016-07-09 
applied to all BAE Systems (Operations) Limited Model 4101 airplanes. 
AD 2016-07-09 required a revision of the maintenance or inspection 
program. The FAA issued AD 2016-07-09 to address failure of certain 
structurally significant items, including the main landing gear and 
nose landing gear, which could result in reduced structural integrity 
of the airplane; and to prevent fuel vapor ignition sources, which 
could result in a fuel tank explosion and consequent loss of the 
airplane.
    The FAA also proposed to supersede AD 2018-19-24, Amendment 39-
19425 (83 FR 49786, October 3, 2018) (AD 2018-19-24). AD 2018-19-24 
applied to all BAE Systems (Operations) Limited Model 4101 airplanes. 
AD 2018-19-24 required a one-time detailed inspection of a certain 
fuselage frame and repair, if necessary, and a revision of the 
maintenance or inspection program, as applicable, to incorporate new or 
revised maintenance instructions and airworthiness limitations. The FAA 
issued AD 2018-19-24 to address cracking in fuselage frame 90, which 
could cause it to fail and thereby compromise the structural integrity 
of the aircraft pressure hull. The FAA also issued AD 2018-19-24 to 
address fatigue damage of various airplane structures, which could 
result in reduced structural integrity of the airplane. AD 2018-19-24 
specifies that accomplishing the revision required by that AD 
terminates all requirements of AD 2005-15-11.
    The NPRM published in the Federal Register on October 21, 2022 (87 
FR 63973). The NPRM was prompted by AD G-2022-0006, dated March 30, 
2022, issued by the Civil Aviation Authority (CAA), which is the 
aviation authority for the United Kingdom (U.K.) (U.K. CAA) (referred 
to after this as the MCAI). The MCAI states that the repetitive 
inspection requirements for Structural Significant Items (SSI) 53-10-
029 were not addressed in European Union Aviation Safety Agency (EASA) 
AD 2017-0187, and additional SSI inspections are necessary (inspections 
for cracking of Hi-Shear (now LISL) collars). The MCAI also states that 
failure to comply with new or more restrictive actions could result in 
an unsafe condition.
    In the NPRM, the FAA proposed to continue to require the actions in 
ADs 2016-07-09 and 2018-19-24 and require revising the existing 
maintenance or inspection program, as applicable, to incorporate new or 
more restrictive airworthiness limitations. The FAA is issuing this AD 
to address fatigue damage of various airplane structures and failure of 
certain structurally significant items, which could result in reduced 
structural integrity of the airplane. The FAA is also issuing this AD 
to address fuel vapor ignition sources, which could result in a fuel 
tank explosion and consequent loss of the airplane.
    You may examine the MCAI in the AD docket at regulations.gov under 
Docket No. FAA-2022-1298.

Discussion of Final Airworthiness Directive

Comments

    The FAA received no comments on the NPRM or on the determination of 
the cost to the public.

[[Page 7853]]

Conclusion

    This product has been approved by the aviation authority of another 
country and is approved for operation in the United States. Pursuant to 
the FAA's bilateral agreement with this State of Design Authority, it 
has notified the FAA of the unsafe condition described in the MCAI 
referenced above. The FAA reviewed the relevant data and determined 
that air safety requires adopting this AD as proposed. Accordingly, the 
FAA is issuing this AD to address the unsafe condition on this product. 
Except for minor editorial changes, 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 Chapter 05, ``Airworthiness Limitations,'' of BAE 
Systems (Operations) Limited J41 Aircraft Maintenance Manual (AMM), 
Effectivity Group 403, Revision 44, dated June 15, 2021; and BAE 
Systems (Operations) Limited J41 AMM, Effectivity Group 408, Revision 
44, dated June 15, 2021. This service information specifies 
airworthiness limitations for fuel tank systems and certification 
maintenance requirements. ``Effectivity Group'' is not specifically 
stated on these documents. However, ``403'' and ``408,'' which are 
stated on the pages of the applicable documents (except for the title 
pages), refer to the effective groups of airplanes specified within the 
fleet code listings. These documents are distinct since they apply to 
different airplanes.
    This AD also requires:
     Subjects 05-10-10, ``Airworthiness Limitations''; 05-10-
20, ``Certification Maintenance Requirements''; and 05-10-30, 
``Critical Design Configuration Control Limitations (CDCCL)--Fuel 
System''; of Chapter 05, ``Airworthiness Limitations,'' of the BAE 
Systems (Operations) Limited J41 AMM, Revision 38, dated September 15, 
2013, which the Director of the Federal Register approved for 
incorporation by reference as of May 16, 2016 (81 FR 21263, April 11, 
2016);
     BAE Systems (Operations) Limited Service Bulletin J41-51-
001, Revision 4, dated July 11, 2017, which the Director of the Federal 
Register approved for incorporation by reference as of November 7, 2018 
(83 FR 49786, October 3, 2018); and
     BAE Systems (Operations) Limited Alert Service Bulletin 
J41-A53-058, dated December 6, 2016, which the Director of the Federal 
Register approved for incorporation by reference as of November 7, 2018 
(83 FR 49786, October 3, 2018).
    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 would affect 10 airplanes of U.S. 
registry. The FAA estimates the following costs to comply with this AD:
    The FAA estimates the total cost per operator for the retained 
actions from AD 2016-07-09 to be $7,650 (90 work-hours x $85 per work-
hour).
    The FAA estimates the total cost per operator for the retained 
maintenance or inspection program revision from AD 2018-19-24 to be 
$7,650 (90 work-hours x $85 per work-hour).
    The FAA has determined that revising the maintenance or inspection 
program takes an average of 90 work-hours per operator, although the 
agency recognizes that this number may vary from operator to operator. 
Since operators incorporate maintenance or inspection program changes 
for their affected fleet(s), the FAA has determined that a per-operator 
estimate is more accurate than a per-airplane estimate. Therefore, the 
agency estimates the average total cost per operator to be $7,650 (90 
work-hours x $85 per work-hour).
    The FAA estimates the total cost per operator for the new actions 
to be $7,650 (90 work-hours x $85 per work-hour).

                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
                Action                         Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Inspection (Retained actions from AD    2 work-hours x $85 per                $0            $170          $1,700
 2018-19-24).                            hour = $170.
----------------------------------------------------------------------------------------------------------------

    The FAA has received no definitive data on which to base the 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 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.

The Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 14 CFR part 39 as follows:

[[Page 7854]]

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) 2005-15-11, Amendment 39-14200 
(70 FR 43025, July 26, 2005); AD 2016-07-09, Amendment 39-18454 (81 FR 
21263, April 11, 2016); and AD 2018-19-24, Amendment 39-19425 (83 FR 
49786, October 3, 2018); and
0
b. Adding the following new AD:

2023-02-06 BAE Systems (Operations) Limited: Amendment 39-22313; 
Docket No. FAA-2022-1298; Project Identifier MCAI-2022-00437-T.

(a) Effective Date

    This airworthiness directive (AD) is effective March 14, 2023.

(b) Affected ADs

    (1) This AD replaces AD 2005-15-11, Amendment 39-14200 (70 FR 
43025, July 26, 2005) (AD 2005-15-11).
    (2) This AD replaces AD 2016-07-09, Amendment 39-18454 (81 FR 
21263, April 11, 2016) (AD 2016-07-09).
    (3) This AD replaces AD 2018-19-24, Amendment 39-19425 (83 FR 
49786, October 3, 2018) (AD 2018-19-24).

(c) Applicability

    This AD applies to all BAE Systems (Operations) Limited Model 
4101 airplanes, certificated in any category.

(d) Subject

    Air Transport Association (ATA) of America Code 05, Time Limits/
Maintenance Checks.

(e) Reason

    This AD was prompted by a determination that new or more 
restrictive airworthiness limitations are necessary. The FAA is 
issuing this AD to address fatigue damage of various airplane 
structures and failure of certain structurally significant items, 
which could result in reduced structural integrity of the airplane. 
The FAA is also issuing this AD to address fuel vapor ignition 
sources, which could result in a fuel tank explosion and consequent 
loss of the airplane.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Retained Revision of the Existing Maintenance or Inspection Program 
(From AD 2016-07-09), With No Changes

    This paragraph restates the requirements of paragraph (i) of AD 
2016-07-09, with no changes. Within 90 days after May 16, 2016 (the 
effective date of AD 2016-07-09): Revise the existing maintenance or 
inspection program, as applicable, by incorporating Subjects 05-10-
10, ``Airworthiness Limitations''; 05-10-20, ``Certification 
Maintenance Requirements''; and 05-10-30, ``Critical Design 
Configuration Control Limitations (CDCCL)--Fuel System''; of Chapter 
05, ``Airworthiness Limitations,'' of the BAE Systems (Operations) 
Limited J41 Aircraft Maintenance Manual (AMM), Revision 38, dated 
September 15, 2013. The initial compliance times for the tasks are 
at the applicable times specified in paragraphs (g)(1) through (3) 
of this AD. Accomplishing the revision of the existing maintenance 
or inspection program required by paragraph (m) of this AD 
terminates the requirements of this paragraph.
    (1) For replacement tasks of life limited parts specified in 
Subject 05-10-10, ``Airworthiness Limitations,'' of Chapter 05, 
``Airworthiness Limitations,'' of the BAE Systems (Operations) 
Limited J41 AMM, Revision 38, dated September 15, 2013: Prior to the 
applicable flight cycles (landings) or flight hours (flying hours) 
on the part specified in the ``Mandatory Life Limits'' column in 
Subject 05-10-10, or within 90 days after May 16, 2016 (the 
effective date of AD 2016-07-09), whichever occurs later.
    (2) For structurally significant item tasks specified in Subject 
05-10-10, ``Airworthiness Limitations,'' of Chapter 05, 
``Airworthiness Limitations,'' of the BAE Systems (Operations) 
Limited J41 AMM, Revision 38, dated September 15, 2013: Prior to the 
accumulation of the applicable flight cycles specified in the 
``Initial Inspection'' column in Subject 05-10-10, or within 90 days 
after May 16, 2016 (the effective date of AD 2016-07-09), whichever 
occurs later.
    (3) For certification maintenance requirements tasks specified 
in Subject 05-10-20, ``Certification Maintenance Requirements,'' of 
Chapter 05, ``Airworthiness Limitations,'' of the BAE Systems 
(Operations) Limited J41 AMM, Revision 38, dated September 15, 2013: 
Prior to the accumulation of the applicable flight hours specified 
in the ``Time Between Checks'' column in Subject 05-10-20, or within 
90 days after May 16, 2016 (the effective date of AD 2016-07-09), 
whichever occurs later; except for tasks that specify ``first flight 
of the day'' in the ``Time Between Checks'' column in Subject 05-10-
20, the initial compliance time is the first flight of the next day 
after doing the revision required by paragraph (g) of AD 2016-07-09, 
or within 90 days after May 16, 2016, whichever occurs later.

(h) Retained Restrictions on Alternative Actions, Intervals, and/or 
CDCCLs, With No Changes

    This paragraph restates the requirements of paragraph (j) of AD 
2016-07-09, with no changes. Except as required by paragraph (m) of 
this AD, after the existing maintenance or inspection program, as 
applicable, has been revised as required by paragraph (g) of this 
AD, no alternative actions (e.g., inspections), intervals, and/or 
CDCCLs may be used unless the actions, intervals, and/or CDCCLs are 
approved as an alternative method of compliance (AMOC) in accordance 
with the procedures specified in paragraph (o)(1) of this AD.

(i) Retained Inspection, With No Changes

    This paragraph restates the requirements of paragraph (g) of AD 
2018-19-24, with no changes. At the compliance times specified in 
paragraphs (i)(1) and (2) of this AD, as applicable: Do a detailed 
inspection of fuselage frame 90 for cracking or fatigue damage, in 
accordance with the Accomplishment Instructions of BAE Systems 
(Operations) Limited Alert Service Bulletin J41-A53-058, dated 
December 6, 2016. If any cracking or fatigue damage is found: Before 
further flight, repair using a method approved by the Manager, 
International Section, Transport Standards Branch, FAA; or the 
European Aviation Safety Agency (EASA); or BAE Systems (Operations) 
Limited's EASA Design Organization Approval (DOA). Accomplishing the 
revision of the existing maintenance or inspection program required 
by paragraph (m) of this AD terminates the requirements of this 
paragraph.
    (1) For airplanes with 6,300 flight cycles or fewer since 
Structural Significant Items (SSI) 53-10-029 (Maintenance Planning 
Document (MPD) 531029-DVl-10010-1) was last accomplished: Within 
6,600 flight cycles after the last accomplishment of SSI 53-10-029 
(MPD 531029-DVl-10010-1), or within 6 months after November 7, 2018 
(the effective date of AD 2018-19-24), whichever is later.
    (2) For airplanes with more than 6,300 flight cycles since SSI 
53-10-029 (MPD 531029-DVl-10010-1) was last accomplished: Within 300 
flight cycles or 4.5 months, whichever is earlier, since the last 
accomplishment of SSI 53-10-029 (MPD 531029-DVl-10010-1), or within 
6 months after November 7, 2018 (the effective date of AD 2018-19-
24), whichever is later.

(j) Retained Revision of Existing Maintenance or Inspection Program 
(From AD 2018-19-24), With No Changes

    This paragraph restates the requirements of paragraph (h) of AD 
2018-19-24, with no changes. Within 90 days after November 7, 2018 
(the effective date of AD 2018-19-24): Revise the existing 
maintenance or inspection program, as applicable, by incorporating 
the maintenance tasks and associated thresholds and intervals 
described in, and in accordance with, the Accomplishment 
Instructions of BAE Systems (Operations) Limited Service Bulletin 
J41-51-001, Revision 4, dated July 11, 2017. The initial compliance 
times for new or revised tasks are at the applicable times specified 
in BAE Systems (Operations) Limited Service Bulletin J41-51-001, 
Revision 4, dated July 11, 2017, or within 6 months after November 
7, 2018, whichever is later. Accomplishing the revision of the 
existing maintenance or inspection program required by paragraph (m) 
of this AD terminates the requirements of this paragraph.

(k) Retained No Alternative Actions and Intervals, With No Changes

    This paragraph restates the requirements of paragraph (i) of AD 
2018-19-24, with no changes. Except as required by paragraph (m) of 
this AD: After the existing maintenance or inspection program has 
been revised as

[[Page 7855]]

required by paragraph (j) of this AD, no alternative actions (e.g., 
inspections) or intervals may be used unless the actions or 
intervals are approved as an AMOC in accordance with the procedures 
specified in paragraph (o)(1) of this AD.

(l) Retained No Reporting Requirement, With No Changes

    This paragraph restates the requirements of paragraph (k) of AD 
2018-19-24, with no changes. Although the Accomplishment 
Instructions of BAE Systems (Operations) Limited Alert Service 
Bulletin J41-A53-058, dated December 6, 2016, specify to submit 
certain information to the manufacturer, this AD does not include 
that requirement.

(m) New Revision of the Existing Maintenance or Inspection Program

    Within 90 days after the effective date of this AD: Revise the 
existing maintenance or inspection program, as applicable, by 
incorporating Subjects 05-10-10, ``Airworthiness Limitations''; 05-
10-20, ``Certification Maintenance Requirements''; and 05-10-30, 
``Critical Design Configuration Control Limitations (CDCCL)--Fuel 
System''; of Chapter 05, ``Airworthiness Limitations,'' of the BAE 
Systems (Operations) Limited J41 AMM, Effectivity Group 403, 
Revision 44, dated June 15, 2021; or BAE Systems (Operations) 
Limited J41 AMM, Effectivity Group 408, Revision 44, dated June 15, 
2021; as applicable. The initial compliance times for the tasks are 
at the applicable times specified in paragraphs (m)(1) through (3) 
of this AD. Accomplishing the revision of the existing maintenance 
or inspection program required by this paragraph terminates the 
actions required by paragraphs (g), (i) and (j) of this AD.
    (1) For replacement tasks of life limited parts specified in 
Subject 05-10-10, ``Airworthiness Limitations,'' of Chapter 05, 
``Airworthiness Limitations,'' of the BAE Systems (Operations) 
Limited J41 AMM, Effectivity Group 403, Revision 44, dated June 15, 
2021; or BAE Systems (Operations) Limited J41 AMM, Effectivity Group 
408, Revision 44, dated June 15, 2021; as applicable: Prior to the 
applicable flight cycles (landings) or flight hours (flying hours) 
on the part specified in the ``Mandatory Life Limits'' column in 
Subject 05-10-10, or within 90 days after the effective date of this 
AD, whichever occurs later.
    (2) For structurally significant item tasks specified in Subject 
05-10-10, ``Airworthiness Limitations,'' of Chapter 05, 
``Airworthiness Limitations,'' of the BAE Systems (Operations) 
Limited J41 AMM, Effectivity Group 403, Revision 44, dated June 15, 
2021; or BAE Systems (Operations) Limited J41 AMM, Effectivity Group 
408, Revision 44, dated June 15, 2021; as applicable: Prior to the 
accumulation of the applicable flight cycles specified in the 
``Initial Inspection'' column in Subject 05-10-10, or within 90 days 
after the effective date of this AD, whichever occurs later.
    (3) For certification maintenance requirements tasks specified 
in Subject 05-10-20, ``Certification Maintenance Requirements,'' of 
Chapter 05, ``Airworthiness Limitations,'' of the BAE Systems 
(Operations) Limited J41 AMM, Effectivity Group 403, Revision 44, 
dated June 15, 2021; or BAE Systems (Operations) Limited J41 AMM, 
Effectivity Group 408, Revision 44, dated June 15, 2021; as 
applicable: Prior to the accumulation of the applicable flight hours 
specified in the ``Time Between Checks'' column in Subject 05-10-20, 
or within 90 days after the effective date of this AD, whichever 
occurs later; except for tasks that specify ``first flight of the 
day'' in the ``Time Between Checks'' column in Subject 05-10-20, the 
initial compliance time is the first flight of the next day after 
accomplishing the revision required by paragraph (m) of this AD, or 
within 90 days after the effective date of this AD, whichever occurs 
later.

(n) New No Alternative Actions, Intervals, or CDCCLs

    After the existing maintenance or inspection program has been 
revised as required by paragraph (m) of this AD, no alternative 
actions (e.g., inspections), intervals, or CDCCLs may be used unless 
the actions, intervals, and CDCCLs are approved as an AMOC in 
accordance with the procedures specified in paragraph (o)(1) of this 
AD.

(o) Additional 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 (p)(2) of this AD. Information may be emailed to: [email protected]. 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.

(p) Additional Information

    (1) Refer to U.K. CAA AD G-2022-0006, dated March 30, 2022, for 
related information. This U.K. CAA AD may be found in the AD docket 
at regulations.gov under Docket No. FAA-2022-1298.
    (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 [email protected].

(q) 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 
March 14, 2023.
    (i) Chapter 05, ``Airworthiness Limitations,'' of BAE Systems 
(Operations) Limited J41 Aircraft Maintenance Manual (AMM), 
Effectivity Group 403, Revision 44, dated June 15, 2021.
    Note 1 to paragraph (q)(3)(i): This note applies to paragraphs 
(q)(3)(i) and (ii) of this AD. Page 1 of the ``Publications 
Transmittal'' is the only page that shows the revision level of this 
document.
    Note 2 to paragraph (q)(3)(i): This note applies to paragraphs 
(q)(3)(i) and (ii) of this AD. ``Effectivity Group'' is not 
specifically stated on the document. However, ``403'' and ``408,'' 
which are stated on the pages of the applicable documents (except 
for the title pages), refer to the effective groups of airplanes 
specified within the fleet code listings.
    (ii) Chapter 05, ``Airworthiness Limitations,'' of BAE Systems 
(Operations) Limited J41 AMM, Effectivity Group 408, Revision 44, 
dated June 15, 2021.
    (4) The following service information was approved for IBR on 
November 7, 2018 (83 FR 49786, October 3, 2018).
    (i) BAE Systems (Operations) Limited Alert Service Bulletin J41-
A53-058, dated December 6, 2016.
    (ii) BAE Systems (Operations) Limited Service Bulletin J41-51-
001, Revision 4, dated July 11, 2017.
    (5) The following service information was approved for IBR on 
May 16, 2016 (81 FR 21263, April 11, 2016).
    (i) Chapter 05, ``Airworthiness Limitations,'' of the BAE 
Systems (Operations) Limited J41 Aircraft Maintenance Manual (AMM), 
Revision 38, dated September 15, 2013.
    Note 3 to paragraph (q)(5)(i): Page 1 of the ``Publications 
Transmittal'' is the only page that shows the revision level of this 
document.
    (A) Subject 05-10-10, ``Airworthiness Limitations.''
    (B) Subject 05-10-20, ``Certification Maintenance 
Requirements.''
    (C) Subject 05-10-30, ``Critical Design Configuration Control 
Limitations (CDCCL)--Fuel System.''
    (ii) [Reserved]
    (6) 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 
[email protected]; website regional-services.com.
    (7) 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

[[Page 7856]]

availability of this material at the FAA, call 206-231-3195.
    (8) 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 January 20, 2023.
Gaetano A. Sciortino,
Acting Director, Compliance & Airworthiness Division, Aircraft 
Certification Service.
[FR Doc. 2023-02526 Filed 2-6-23; 8:45 am]
BILLING CODE 4910-13-P