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Federal Register / Vol. 86, No. 34 / Tuesday, February 23, 2021 / Rules and Regulations
of business or by the means identified in ADDRESSES.

reviewing this unsafe condition and may develop a terminating action.

Interim Action The FAA considers this AD interim action. The manufacturer is still
Costs of Compliance The FAA estimates that this AD
affects 190 engines installed on airplanes of U.S. registry.
The FAA estimates the following costs to comply with this AD:

ESTIMATED COSTS
Action
Labor cost
Visually inspect the p-clamp
Replace the p-clamp

0.25 work-hours $85 per hour = $21.25
0.25 work-hours $85 = $21.25

The FAA estimates the following costs to do any necessary FPIs and replacements that are required based on
Parts cost
the results of the visual inspection. The agency has no way of determining the
$0
102

Cost per product $21.25
123.25

Cost on U.S.
operators $4,037.50
23,417.50

number of aircraft that require FPI or replacement:

ON-CONDITION COSTS
Action
Labor cost
FPI the outer fuel manifold
Replace the outer fuel manifold

2.5 work-hours $85 per hour = $212.50
2 work-hours $85 per hour = $170

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
VerDate Sep<11>2014

21:28 Feb 22, 2021

Jkt 253001

$0
18,400

Cost per product $212.50
18,570

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.

c Applicability This AD applies to all General Electric Company GE GEnx1B64, 1B64/P1, 1B64/P2, 1B67, 1B67/P1, 1B67/P2, 1B70, 1B70/75/P1, 1B70/75/P2, 1B70/
P1, 1B70/P2, 1B70C/P1, 1B70C/P2, 1B74/75/P1, 1B74/75/P2, 1B76/P2, and 1B76A/P2 model turbofan engines.

List of Subjects in 14 CFR Part 39

d Subject Joint Aircraft System Component JASC
Code 7310, Engine Fuel Distribution.

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 39AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:

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

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

20210207 General Electric Company:
Amendment 3921390; Docket No.
FAA20200653; Project Identifier AD
202000631E.
a Effective Date This airworthiness directive AD is effective March 30, 2021.
b Affected ADs None.

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e Unsafe Condition This AD was prompted by a report of a crack in the outer fuel manifold causing fuel leakage. The FAA is issuing this AD to prevent failure of the outer fuel manifold.
The unsafe condition, if not addressed, could result in engine fire and damage to the airplane.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions 1 Within 500 flight cycles FCs after the effective date of this AD, perform a visual inspection of the cushioned loop clamp p-clamp, significant item number SIN
34282, to verify the p-clamp is undamaged and installed.
i Thereafter, perform the visual inspection required by g1 of this AD at intervals not to exceed 500 FCs since the last inspection.
ii Reserved 2 If, during any visual inspection required by paragraphs g1 or g1i of this AD, the p-clamp SIN 34282 is outside of the limits in paragraph 3.B.4 of GE
GEnx1B Service Bulletin SB 730080 R01, dated August 29, 2019, or if the p-clamp SIN

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