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Federal Register / Vol. 86, No. 231 / Monday, December 6, 2021 / Rules and Regulations Costs of Compliance
have access to it through their normal course of business or by the means identified in the ADDRESSES section.

The FAA estimates that this AD
affects 79 airplanes of U.S. registry. The
FAA estimates the following costs to comply with this AD:

ESTIMATED COSTS FOR REQUIRED ACTIONS
Action
Labor cost
Repetitive inspections ..

14 work-hours $85 per hour =
$1,190 per inspection cycle.

The FAA has received no definitive data on which to base the cost estimates for the on-condition repairs specified in this AD.
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.

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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.

15:44 Dec 03, 2021

$0

Cost per product
Cost on U.S. operators
$1,190 per inspection cycle

$94,010 per inspection cycle.

g Required Actions
The Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows:
PART 39AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:

Authority: 49 U.S.C. 106g, 40113, 44701.
39.13

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

20212320 The Boeing Company:
Amendment 3921819; Docket No.
FAA20210332; Project Identifier AD
202001414T.
a Effective Date This airworthiness directive AD is effective January 10, 2022.
b Affected ADs None.
c Applicability
Regulatory Findings
VerDate Sep<11>2014

Parts cost
Jkt 256001

This AD applies to The Boeing Company Model 7878 and 7879 airplanes, certificated in any category, as identified in Boeing Alert Requirements Bulletins B787
81205SB53007500 RB and B78781205
SB53007600 RB, both Issue 001, both dated September 8, 2020.
d Subject Air Transport Association ATA of America Code 53, Fuselage.
e Unsafe Condition This AD was prompted by reports that shimming requirements were not met during the assembly of certain areas of the front spar pickle fork and front spar outer chord structural joints, which can result in reduced fatigue thresholds of the affected structural joints. The FAA is issuing this AD to address undetected fatigue cracking, which could weaken primary structure so it cannot sustain limit load, and could result in reduced structural integrity of the airplane.
f Compliance Comply with this AD within the compliance times specified, unless already done.

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Except as specified by paragraph h of this AD: At the applicable times specified in the Compliance paragraph of Boeing Alert Requirements Bulletins B78781205
SB53007500 RB and B78781205
SB53007600 RB, both Issue 001, both dated September 8, 2020, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletins B78781205
SB53007500 RB and B78781205
SB53007600 RB, both Issue 001, both dated September 8, 2020.
Note 1 to paragraph g: Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletins B78781205SB53007500 and B78781205SB53007600, both Issue 001, dated both September 8, 2020, which are referred to in Boeing Alert Requirements Bulletins B78781205SB53007500 RB and B78781205SB53007600 RB, both Issue 001, both dated September 8, 2020.
h Exceptions to Service Information Specifications 1 Where Boeing Alert Requirements Bulletin B78781205SB53007600 RB, Issue 001, dated September 8, 2020, uses the phrase the issue 001 date of the Requirements Bulletin B78781205
SB53007600 RB, this AD requires using the effective date of this AD.
2 Where Boeing Alert Requirements Bulletins B78781205SB53007500 RB and B78781205SB53007600 RB, both Issue 001, both dated September 8, 2020, specify contacting Boeing for repair instructions:
This AD requires doing the repair using a method approved in accordance with the procedures specified in paragraph i of this AD.
i 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 j 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.

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