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Federal Register / Vol. 86, No. 96 / Thursday, May 20, 2021 / Rules and Regulations ESTIMATED COSTS
Action
Labor cost
Replace HPT inner stationary seal
Inspect HPT inner stationary seal

1 work-hour $85 per hour = $85
1 work-hour $85 per hour = $85

The FAA estimates the following costs to do any necessary replacements that would be required based on the
Parts cost
results of the inspection. The agency has no way of determining the number of
$7,910
0

Cost per product
Cost on U.S.
operators
$7,995
85

$1,678,950
17,850

engines that might need these replacements:

ON-CONDITION COSTS
Action
Labor cost
Replace rotating air HPT front seal
Replace HPT rotor blades pair
Replace No. 3 ball bearing

1 work-hour $85 per hour = $85
1 work-hour $85 per hour = $85
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 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.

VerDate Sep<11>2014

16:06 May 19, 2021

Jkt 253001

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:
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:

20211009 CFM International, S.A.:
Amendment 3921542; Docket No.
FAA20190568; Project Identifier 2019NE20AD.
a Effective Date This airworthiness directive AD is effective June 24, 2021.
b Affected ADs None.
c Applicability 1 This AD applies to all CFM
International, S.A. CFM CFM565B1, 5B1/
2P, 5B1/3, 5B1/P, 5B2, 5B2/2P, 5B2/3, 5B2/P, 5B3/2P, 5B3/2P1, 5B3/3, 5B3/
3B1, 5B3/P, 5B3/P1, 5B4, 5B4/2P, 5B4/
2P1, 5B4/3, 5B4/3B1, 5B4/P, 5B4/P1, 5B5, 5B5/3, 5B5/P, 5B6, 5B6/2P, 5B6/
3, 5B6/P, 5B7, 5B7/3, 5B7/P, 5B8/3, 5B8/P, 5B9/2P, 5B9/3, 5B9/P, CFM56
7B20, 7B20/2, 7B20/3, 7B20E, 7B22, 7B22/2, 7B22/3, 7B22/3B1, 7B22/B1, 7B22E, 7B22E/B1, 7B24, 7B24/2, 7B24/
3, 7B24/3B1, 7B24/B1, 7B24E, 7B24E/
B1, 7B26, 7B26/2, 7B26/3, 7B26/3B1,
PO 00000

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Fmt 4700

Sfmt 4700

Parts cost $344,600
31,000
30,000

Cost per product $344,685
31,085
30,085

7B26/3B2, 7B26/3B2F, 7B26/3F, 7B26/
B1, 7B26/B2, 7B26E, 7B26E/B1, 7B26E/
B2, 7B26E/B2F, 7B26E/F, 7B27, 7B27/2, 7B27/3, 7B27/3B1, 7B27/3B1F, 7B27/
3B3, 7B27/3F, 7B27/B1, 7B27/B3, 7B27A, 7B27A/3, 7B27AE, 7B27E, 7B27E/B1, 7B27E/B1F, 7B27E/B3, and 7B27E/F model turbofan engines with a high-pressure turbine HPT inner stationary seal, part number P/N 1808M56G01
installed that has a serial number S/N listed in Planning Information, Paragraph 1.A., Table 1, of CFM Service Bulletin SB
CFM565B S/B 720952, Revision 01, dated January 15, 2020, or in Planning Information, Paragraph 1.A., Table 1, CFM SB CFM567B
S/B 721054, Revision 01, dated January 15, 2020, installed.
2 This AD does not apply to affected CFM
CFM565B and CFM567B model turbofan engines with the affected HPT inner stationary seal installed if the seal has been repaired as specified in CFM565B Engine Shop Manual ESM, 724103, REPAIR 003, or CFM567B ESM, 724103, REPAIR 003, after the year listed in Paragraph 1.A., Table 1, of CFM SB CFM565B S/B 720952, Revision 01, dated January 15, 2020, or Paragraph 1.A., Table 1, CFM SB CFM567B
S/B 721054, Revision 01, dated January 15, 2020.
d Subject Joint Aircraft System Component JASC
Code 7230, Turbine Engine Compressor 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 HPT
inner stationary seal and the rotating air HPT
front seal. The unsafe condition, if not addressed, could result in 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.

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