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Federal Register / Vol. 86, No. 105 / Thursday, June 3, 2021 / Proposed Rules Regulatory Findings The FAA determined that this proposed AD would not have federalism implications under Executive Order 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 Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 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:

Pratt & Whitney: Docket No. FAA2021
0447; Project Identifier AD202100131
E.
a Comments Due Date The FAA must receive comments on this airworthiness directive AD by July 19, 2021.

khammond on DSKJM1Z7X2PROD with PROPOSALS

b Affected ADs None.
c Applicability This AD applies to Pratt & Whitney PW1519G, PW1521G, PW1521G3, PW1521GA, PW1524G, PW1524G3, PW1525G, PW1525G3, PW1919G, PW1921G, PW1922G, PW1923G, and PW1923GA model turbofan engines.
d Subject Joint Aircraft System Component JASC
Code 7230, Turbine Engine Compressor Section.

16:29 Jun 02, 2021

Jkt 253001

Issued on May 27, 2021.
Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202111565 Filed 6221; 8:45 am BILLING CODE 491013P

f Compliance Comply with this AD within the compliance times specified, unless already done.
g Required Action At next engine shop visit after the effective date of this AD, remove HPC front hub, part number P/N 30G1910 or 30G3210, and HPC
rotor shaft, P/N 30G1854, 30G3109, 30G4995, 30G4953, or 31G0014, from service and replace each part with a part eligible for installation.

DEPARTMENT OF THE INTERIOR
Office of Surface Mining Reclamation and Enforcement 30 CFR Part 917
SATS No. KY263FOR; Docket ID: OSM
20200002; S1D1S SS08011000 SX064A000
212S180110; S2D2S SS08011000
SX064A000 21XS501520

h Definitions
Kentucky Regulatory Program
1 For the purpose of this AD, an engine shop visit is the induction of an engine into the shop for maintenance involving the separation of pairs of major mating engine case flanges, except for the following, which do not constitute an engine shop visit:
i Separation of engine flanges solely for the purposes of transportation without subsequent maintenance does not constitute an engine shop visit.
ii Separation of engine flanges solely for the purpose of replacing the fan without subsequent maintenance does not constitute an engine shop visit.
2 For the purpose of this AD, a part eligible for installation is:
i For a HPC front hub: Any HPC front hub with a P/N other than P/N 30G1910 or 30G3210; and ii For a HPC rotor shaft: Any HPC rotor shaft with a P/N other than P/N 30G1854, 30G3109, 30G4995, 30G4953, or 31G0014.

AGENCY:

i 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 Related Information. You may email your request to: ANE-AD-AMOC@
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.
j Related Information
e Unsafe Condition This AD was prompted by reports of cracks in the high-pressure compressor HPC rotor
VerDate Sep<11>2014

shaft that resulted in in-flight shutdowns and unscheduled engine removals. The FAA is issuing this AD to prevent cracking of the HPC rotor shaft. The unsafe condition, if not addressed, could result in release of a highpressure turbine disk, damage to the engine, and damage to the airplane.

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For more information about this AD, contact Mark Taylor, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781
2387229; fax: 781 2387199; email:
Mark.Taylor@faa.gov.

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Office of Surface Mining Reclamation and Enforcement, Interior.
ACTION: Proposed rule; public comment period and opportunity for public hearing on proposed amendment.
We, the Office of Surface Mining Reclamation and Enforcement OSMRE, are announcing receipt of a proposed amendment to the Kentucky regulatory program hereinafter, the Kentucky program, under the Surface Mining Control and Reclamation Act of 1977 SMCRA or the Act. Kentucky proposes to revise their administrative regulations to correct citations and revise language related to the repeal of the interim program regulations.
This document gives the times and locations that the Kentucky program and this proposed amendment to that program are available for your inspection, the comment period during which you may submit written comments on the amendment, and the procedures that we will follow for the public hearing, if one is requested.
DATES: We will accept written comments on this amendment until 4:00
p.m., Eastern Daylight Time e.d.t., July 6, 2021. If requested, we may hold a public hearing or meeting on the amendment on June 28, 2021. We will accept requests to speak at a hearing until 4:00 p.m., e.d.t. on June 18, 2021.
ADDRESSES: You may submit comments, identified by SATS No. KY263FOR, by any of the following methods:
Mail/Hand Delivery: Mr. Michael Castle, Field Office Director, Lexington Field Office, Office of Surface Mining Reclamation and Enforcement, 2675
Regency Road, Lexington, KY 40503.
Fax: 859 2608410.
Federal eRulemaking Portal: The amendment has been assigned Docket ID OSM20200002 If you would like to SUMMARY:

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