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Federal Register / Vol. 86, No. 3 / Wednesday, January 6, 2021 / Rules and Regulations
Costs of Compliance The FAA estimates that this AD
affects 4 engines installed on airplanes of U.S. registry.

The FAA estimates the following costs to comply with this AD:

ESTIMATED COSTS
Action
Labor cost
Remove HPT 1st-stage or HPT 2nd-stage disk from service.

92 work-hours $85 per hour =
$7,820.

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, and 2 Will not affect intrastate aviation in Alaska.
List of Subjects in 14 CFR Part 39

jbell on DSKJLSW7X2PROD with RULES

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:

VerDate Sep<11>2014

16:19 Jan 05, 2021

Jkt 253001

Parts cost
1. The authority citation for part 39
continues to read as follows:

Authority: 49 U.S.C. 106g, 40113, 44701.
Amended
2. The FAA amends 39.13 by adding the following new airworthiness directive:

20210103 International Aero Engines AG: Amendment 3921379; Docket No.
FAA20201168; Project Identifier AD
202001568E.
a Effective Date This airworthiness directive AD is effective January 21, 2021.
b Affected ADs None.
c Applicability This AD applies to International Aero Engines AG IAE V2500A1, V2522A5, V2524A5, V2525D5, V2527A5, V2527E
A5, V2527MA5, V2528D5, V2530A5, V2531E5, and V2533A5 model turbofan engines with an installed:
1 High-pressure turbine HPT 1st-stage disk, part number P/N 2A5001, with a serial number S/N listed in Figure 1 to paragraph c of this AD; or 2 HPT 2nd-stage disk, P/N 2A4802 or 2A1202, with an S/N listed in Figure 2 to paragraph c of this AD.
Figure 1 to Paragraph cHPT 1st-Stage Disks, P/N 2A5001
HPT 1st-Stage Disk S/N
PKLBMR8122
PKLBN95688
PKLBPD1563
PKLBR09920
PKLBR16496
PKLBR19225
PKLBR25636
PKLBR28076
PKLBR34562
PKLBR52354
PKLBR69530
PKLBR82479
PKLBRJ9427
PKLBRN5510
PKLBRT5081
PKLBRU7299
PKLBRW8547
PKLBRW9395
PKLBSJ7141

PO 00000

Frm 00022

Fmt 4700

Sfmt 4700

$307,820

Cost on U.S.
operators $1,231,280

PKLBSM8377

PART 39AIRWORTHINESS
DIRECTIVES

39.13

$300,000

Cost per product
Figure 2 to Paragraph cHPT 2nd-Stage Disks, P/N 2A4802 or 2A1202
HPT 2nd-Stage Disk S/N
PKLBJ09996
PKLBJ13601
PKLBJ80883
PKLBKL8627
PKLBLJ9333
PKLBP87124
PKLBPY9696
PKLBSL8699
d Subject Joint Aircraft System Component JASC
Code 7250, Turbine Section.
e Unsafe Condition This AD was prompted by an analysis performed by the manufacturer of an event involving an uncontained failure of an HPT
1st-stage disk that resulted in high-energy debris penetrating the engine cowling. The FAA is issuing this AD to prevent failure of the HPT 1st-stage and HPT 2nd-stage disks.
The unsafe condition, if not addressed, could result in uncontained HPT disk failure, damage to the engine, damage to the airplane, and loss of the airplane.
f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Actions 1 For IAE model turbofan engines with an HPT 1st-stage disk, P/N 2A5001, with a S/N
listed in Figure 1 to paragraph c of this AD, within 50 flight cycles or 30 days after the effective date of this AD, whichever comes first, remove the HPT 1st-stage disk from service.
2 For IAE model turbofan engines with an HPT 2nd-stage disk, P/N 2A4802 or 2A1202, with a S/N listed in Figure 2 to paragraph c of this AD, within 50 flight cycles or 30 days after the effective date of this AD, whichever comes first, remove the HPT 2nd-stage disk from service.
h Installation Prohibition After the effective date of this AD, do not install onto any engine an HPT 1st-stage or HPT 2nd-stage disk with a P/N and S/N
listed in paragraph c of this AD.
i Alternative Methods of Compliance AMOCs 1 The Manager, ECO Branch, FAA, has the authority to approve AMOCs for this AD,
E:FRFM06JAR1.SGM

06JAR1