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Federal Register / Vol. 86, No. 226 / Monday, November 29, 2021 / Proposed Rules 13132. This proposed AD would 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 this proposed regulation:
1 Is not a significant regulatory action under Executive Order 12866, 2 Would not affect intrastate aviation in Alaska, and 3 Would 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.

the FAA proposes to amend 14 CFR part 39 as follows:

2018BB1A, and Passport 2019BB1A model turbofan engines.
d Subject
PART 39AIRWORTHINESS
DIRECTIVES

Joint Aircraft System Component JASC
Code 7250, Turbine Section.

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

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

67671

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

General Electric Company: Docket No. FAA
20211016; Project Identifier AD2021
00625E.
a Comments Due Date The FAA must receive comments on this airworthiness directive AD by January 13, 2022.
b Affected ADs None.

The Proposed Amendment
c Applicability
Accordingly, under the authority delegated to me by the Administrator,
This AD applies to General Electric Company GE Passport 2017BB1A, Passport
e Unsafe Condition This AD was prompted by a manufacturing quality escape that requires a reduction to the life limit for certain HPT rotor stage 1 disks.
The FAA is issuing this AD to prevent failure of the HPT rotor stage 1 disk. The unsafe condition, if not addressed, could result in uncontained disk release, 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 Action Within 120 days after the effective date of this AD, revise the airworthiness limitations section of the existing maintenance manual for your engine and the operators existing approved continuous airworthiness maintenance program by adding Figure 1 to paragraph g of this AD.

Figure 1 to Paragraph g - Passport 20-17BB1A, Passport 20-18BB1A, and Passport 20-19BB1A Model Turbofan Engines and Life Limits Part Number
Affected Population by Serial Number
HPT
Rotor Stage 1
Disk
2471M11P02 GE SB 720116, Table 1

Note 1 to paragraph g: Where Figure 1 to paragraph g refers to Life Cycles, for the purpose of this AD, this refers to life cycles since new.

khammond on DSKJM1Z7X2PROD with PROPOSALS

h Alternative Methods of Compliance AMOCs 1 The Manager, ECO 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 local Flight Standards District 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 i1 of this AD.

VerDate Sep<11>2014

15:59 Nov 26, 2021

Jkt 256001

Life Cycles for Passport 2017BB1A

Life Cycles for Passport 2018BB1A

Life Cycles for Passport 2019BB1A

3,800

3,800

3,800

Information may be emailed to: ANE-ADAMOC@faa.gov.
2 Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/
certificate holding district office.
i Related Information 1 For more information about this AD, contact Scott Stevenson, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781
2387132; fax: 781 2387199; email:
Scott.M.Stevenson@faa.gov.
2 For service information identified in this AD, contact General Electric Company, 1 Neumann Way, Cincinnati, OH 45215;

PO 00000

Frm 00011

Fmt 4702

Sfmt 4702

phone: 513 5523272; email:
aviation.fleetsupport@ge.com; website:
www.ge.com. You may view this referenced service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 817 2225110.
Issued on November 22, 2021.
Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202125870 Filed 112621; 8:45 am BILLING CODE 491013P

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29NOP1

EP29NO21.007

Part Name