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Federal Register / Vol. 86, No. 204 / Tuesday, October 26, 2021 / Rules and Regulations $7,650 90 work-hours $85 per workhour.
Authority for This Rulemaking Title 49 of the United States Code specifies the FAAs 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 Agencys 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
PART 39AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:

Authority: 49 U.S.C. 106g, 40113, 44701.

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Amended
2. The FAA amends 39.13 by adding the following new airworthiness directive:

20212019 The Boeing Company:
Amendment 3921757; Docket No.
FAA20210099; Project Identifier AD
202001272T.
a Effective Date This airworthiness directive AD is effective November 30, 2021.
b Affected ADs This AD affects the ADs specified in paragraphs b1 through 7 of this AD.
1 AD 20081101 R1, Amendment 39
16145 74 FR 68515, December 28, 2009 AD
20081101 R1.
2 AD 20100610, Amendment 3916234
75 FR 15322, March 29, 2010 AD 201006
10.
3 AD 20112505, Amendment 3916881
77 FR 2442, January 18, 2012 AD 201125
05.
4 AD 20132502, Amendment 3917698
79 FR 24541, May 1, 2014 AD 201325
02.
5 AD 20140809, Amendment 3917833
79 FR 24546, May 1, 2014 AD 201408
09.
6 AD 20142002, Amendment 3917975
79 FR 59102, October 1, 2014 AD 201420
02.
7 AD 20182013, Amendment 3919447
83 FR 52305, October 17, 2018 AD 2018
2013.
c Applicability This AD applies to The Boeing Company Model 767200, 300, 300F, and 400ER
series airplanes, certificated in any category, having line numbers L/N 1 through 1200
inclusive.
d Subject Air Transport Association ATA of America Code 28, Fuel.
e Unsafe Condition This AD was prompted by significant changes made to the airworthiness limitations AWLs related to fuel tank ignition prevention and the nitrogen generation system. The FAA is issuing this AD to address the potential for ignition sources inside fuel tanks caused by latent failures, alterations, repairs, or maintenance actions, which, in combination with flammable fuel vapors, 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.

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

VerDate Sep<11>2014

39.13

g Maintenance or Inspection Program Revision Within 60 days after the effective date of this AD, revise the existing maintenance or inspection program, as applicable, to incorporate the applicable information in Section A, including Subsections A.1, A.2, A.3, A.4, and A.5, of Boeing 767200/300/

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300F/400ER Special Compliance Items/
Airworthiness Limitations, D622T001904, dated January 2020; except as provided by paragraph h of this AD. The initial compliance times for the airworthiness limitation instructions ALI tasks are within the applicable compliance times specified in paragraphs g1 through 14 of this AD:
1 For airplanes identified in the applicability for AWL No. 28AWL01, External Wires Over Auxiliary Center Fuel Tank: At the applicable time specified in paragraph g1i or ii of this AD.
i For airplanes that did not have any version of AWL No. 28AWL01 in their maintenance or inspection program before the effective date of this AD: Within 144
months since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 12
months after the effective date of this AD, whichever occurs later.
ii For airplanes not identified in paragraph g1i of this AD: Within 144
months since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 144
months after the most recent inspection, if any, was performed as specified in AWL No.
28AWL01; whichever occurs later.
2 For airplanes identified in the applicability for AWL No. 28AWL05, Lightning ProtectionHydraulic Line Fuel Tank Penetration Bonding Path: At the applicable time specified in paragraph g2i or ii of this AD.
i For airplanes that did not have any version of AWL No. 28AWL05 in their maintenance or inspection program before the effective date of this AD: At the later of the times specified in paragraphs g2iA
and B of this AD.
A Within 25,000 flight hours or 72
months, whichever occurs first since issuance of the original airworthiness certificate or original export certificate of airworthiness.
B Within 60 days after the effective date of this AD.
ii For airplanes not identified in paragraph g2i of this AD: At the later of the times specified in paragraphs g2iiA
and B of this AD.
A Within 25,000 flight hours or 72
months, whichever occurs first since issuance of the original airworthiness certificate or original export certificate of airworthiness.
B Within 25,000 flight hours or 72
months, whichever occurs first after the most recent inspection, if any, was performed as specified in AWL No. 28AWL05.
3 For airplanes identified in the applicability for AWL No. 28AWL18, Fuel Quantity Indicating System FQIS
Out of Tank Wiring Lightning Shield to Ground Termination: At the applicable time specified in paragraph g3i or ii of this AD.
i For airplanes that did not have any version of AWL No. 28AWL18 in their maintenance or inspection program before the effective date of this AD: Within 144
months since issuance of the original airworthiness certificate or original export certificate of airworthiness, or within 12

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