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Federal Register / Vol. 86, No. 161 / Tuesday, August 24, 2021 / Rules and Regulations ESTIMATED COSTS
Action
Labor cost
Replace the rotating air HPT front seal

1 work-hour $85 per hour = $85

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 The FAA has 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.

lotter on DSK11XQN23PROD with RULES1

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:

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15:55 Aug 23, 2021

Jkt 253001

Parts cost
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:
a. Removing Airworthiness Directive 20191205, Amendment 3919660 84
FR 28717, June 20, 2019; and b. Adding the following new airworthiness directive:

20211608 CFM International, S.A.:
Amendment 3921670; Docket No.
FAA20190597; Project Identifier 2019NE05AD.
a Effective Date This airworthiness directive AD is effective September 28, 2021.
b Affected ADs This AD replaces AD 20191205, Amendment 3919660 84 FR 28717, June 20, 2019.
c Applicability This AD applies to:
1 CFM International, S.A. CFM CFM56
5B1, 5B2, 5B4, 5B5, 5B6, 5B7, 5B1/P, 5B2/P, 5B3/P, 5B4/P, 5B5/P, 5B6/P, 5B7/P, 5B8/P, 5B9/P, 5B3/P1, 5B4/P1, 5B1/2P, 5B2/2P, 5B3/2P, 5B4/2P, 5B6/
2P, 5B9/2P, 5B3/2P1, 5B4/2P1, 7B20, 7B22, 7B24, 7B26, 7B27, 7B22/B1, 7B24/B1, 7B26/B1, 7B26/B2, 7B27/B1, 7B27/B3, 7B20/2, 7B22/2, 7B24/2, 7B26/2, 7B27/2, 7B27A model turbofan engines with a:
i Rotating air high-pressure turbine HPT
front seal:
A With part number P/N 1795M36P01
or P/N 1795M36P02 and serial numbers S/
Ns GWNDN949 through GWNSE969 or S/Ns GWN000CE through GWN0990L, not including S/Ns GWN08ND7, GWN0923A, GWN0971E, GWN098A1, GWN098W6, GWN098W8, GWN098WA, and GWN0990G, installed, and B That has been removed from the original HPT disk and re-assembled to a different HPT disk.
ii Reserved 2 CFM CFM565C2, 5C2/4, 5C2/F, 5C2/F4, 5C2/G, 5C2/G4, 5C2/P, 5C3/F, 5C3/F4, 5C3/G, 5C3/G4, 5C3/P, 5C4, 5C4/1, 5C4/P, 5C4/1P model turbofan engines with a:
i Rotating air HPT front seal:
A With P/N 1795M36P01 or P/N
1795M36P02 and S/Ns GWNDN949 through GWNSE969 or S/Ns GWN000CE through GWN0990L, not including S/Ns GWN08ND7, GWN0923A, GWN0971E, GWN098A1,
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$344,600

Cost per product $344,685

Cost on U.S.
operators $1,378,740

GWN098W6, GWN098W8, GWN098WA, and GWN0990G, installed, and B That has been removed from the original HPT disk and re-assembled to a different HPT disk.
ii Reserved d Subject Joint Aircraft System Component JASC
Code 7250, Turbine Section.
e Unsafe Condition This AD was prompted by cracks found in the rotating air HPT front seal. The FAA is issuing this AD to prevent failure of the rotating air HPT front seal. The unsafe condition, if not addressed, could result in the uncontained release of the rotating air HPT front seal, damage to the engine, and damage to the airplane.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions 1 For all affected CFM CFM565B and CFM567B model turbofan engines:
i If, on July 5, 2019 the effective date of AD 20191205, the rotating air HPT front seal has 7,000 cycles or greater since being reconfigured, remove the part from service within 50 cycles after July 5, 2019 the effective date of AD 20191205, or before further flight, whichever occurs later, and replace with a part eligible for installation.
ii If, on July 5, 2019 the effective date of AD 20191205, the rotating air HPT front seal has between 6,001 and 6,999 cycles, inclusive, since being reconfigured, remove the part from service within 500 cycles after July 5, 2019 the effective date of AD 2019
1205, but not to exceed 7,050 cycles since being reconfigured, or before further flight, whichever occurs later, and replace with a part eligible for installation.
iii For all remaining CFM565B and CFM567B model turbofan engines, remove the rotating air HPT front seal from service before accumulating 6,500 cycles since being reconfigured, or within 50 cycles after the effective date of this AD, whichever occurs later.
2 For all affected CFM CFM565C model turbofan engines:
i If, on July 5, 2019 the effective date of AD 20191205, the rotating air HPT front seal has 4,250 cycles or greater since being reconfigured, remove the part from service within 25 cycles after July 5, 2019 the effective date of AD 20191205, within 1,500 cycles since the last fluorescent penetrant inspection FPI of the rotating air HPT front seal, or before further flight after the effective date of this AD, whichever occurs later, and replace with a part eligible for installation.

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