31194 Federal Register / Vol. 86, No. 111 / Friday, June 11, 2021 / Proposed Rules 

Register Liaison Officer has been 

authorized to sign and submit the 

document in electronic format for 

publication, as an official document of 

the Department of Energy. This 

administrative process in no way alters 

the legal effect of this document upon 

publication in the Federal Register. 

Signed in Washington, DC, on June 7, 

2021. 

Treena V. Garrett, 

Federal Register Liaison Officer, U.S. 

Department of Energy. 

[FR Doc. 2021–12160 Filed 6–10–21; 8:45 am] 

BILLING CODE 6450–01–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0460; Project 

Identifier MCAI–2020–01620–R] 

RIN 2120–AA64 

Airworthiness Directives; Airbus 

Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

certain Airbus Helicopters Model 

AS355E, AS355F, AS355F1, and 

AS355F2 helicopters. This proposed AD 

was prompted by multiple fatigue 

cracks in power turbine (PT) 3rd stage 

wheels. This proposed AD would 

require revising the existing Rotorcraft 

Flight Manual (RFM) for your helicopter 

and installing a placard. The FAA is 

proposing this AD to address the unsafe 

condition on these products. 

DATES: The FAA must receive comments 

on this proposed AD by July 26, 2021. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 

• Federal eRulemaking Portal: Go to 

https://www.regulations.gov. Follow the 

instructions for submitting comments. 

• Fax: (202) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal 

holidays. 

For Airbus Helicopters service 

information identified in this NPRM, 

contact Airbus Helicopters, 2701 North 

Forum Drive, Grand Prairie, TX 75052; 

telephone (972) 641–0000 or (800) 232– 

0323; fax (972) 641–3775; or at https:// 

www.airbus.com/helicopters/services/ 

technical-support.html. For Rolls-Royce 

service information identified in this 

NPRM, contact Rolls-Royce plc, 

Corporate Communications, P.O. Box 

31, Derby, DE24 8BJ, United Kingdom; 

phone: +44 (0)1332 242424; fax: +44 

(0)1332 249936; or at https://www.rollsroyce.com/contact-us.aspx. You may 

view this service information at the 

FAA, Office of the Regional Counsel, 

Southwest Region, 10101 Hillwood 

Pkwy., Room 6N–321, Fort Worth, TX 

76177. For information on the 

availability of this material at the FAA, 

call (817) 222–5110. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2021–0460; or in person at Docket 

Operations between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal 

holidays. The AD docket contains this 

NPRM, the European Union Aviation 

Safety Agency (EASA) AD, any 

comments received, and other 

information. The street address for 

Docket Operations is listed above. 

FOR FURTHER INFORMATION CONTACT: 

Michael Hughlett, Aerospace Engineer, 

General Aviation & Rotorcraft Section, 

International Validation Branch, FAA, 

10101 Hillwood Pkwy., Fort Worth, TX 

76177; telephone (817) 222–5110; email 

michael.hughlett@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA invites you to send any 

written relevant data, views, or 

arguments about this proposal. Send 

your comments to an address listed 

under ADDRESSES. Include ‘‘Docket No. 

FAA–2021–0460; Project Identifier 

MCAI–2020–01620–R’’ at the beginning 

of your comments. The most helpful 

comments reference a specific portion of 

the proposal, explain the reason for any 

recommended change, and include 

supporting data. The FAA will consider 

all comments received by the closing 

date and may amend this proposal 

because of those comments. 

Except for Confidential Business 

Information (CBI) as described in the 

following paragraph, and other 

information as described in 14 CFR 

11.35, the FAA will post all comments 

received, without change, to https://

www.regulations.gov, including any 

personal information you provide. The 

agency will also post a report 

summarizing each substantive verbal 

contact received about this NPRM. 

Confidential Business Information 

CBI is commercial or financial 

information that is both customarily and 

actually treated as private by its owner. 

Under the Freedom of Information Act 

(FOIA) (5 U.S.C. 552), CBI is exempt 

from public disclosure. If your 

comments responsive to this NPRM 

contain commercial or financial 

information that is customarily treated 

as private, that you actually treat as 

private, and that is relevant or 

responsive to this NPRM, it is important 

that you clearly designate the submitted 

comments as CBI. Please mark each 

page of your submission containing CBI 

as ‘‘PROPIN.’’ The FAA will treat such 

marked submissions as confidential 

under the FOIA, and they will not be 

placed in the public docket of this 

NPRM. Submissions containing CBI 

should be sent to Michael Hughlett, 

Aerospace Engineer, General Aviation & 

Rotorcraft Section, International 

Validation Branch, FAA, 10101 

Hillwood Pkwy., Fort Worth, TX 76177; 

telephone (817) 222–5110; email 

michael.hughlett@faa.gov. Any 

commentary that the FAA receives 

which is not specifically designated as 

CBI will be placed in the public docket 

for this rulemaking. 

Background 

EASA, which is the Technical Agent 

for the Member States of the European 

Union, has issued EASA AD 2020–0266, 

dated December 8, 2020 (EASA AD 

2020–0266), to correct an unsafe 

condition for Airbus Helicopters (AH), 

formerly Eurocopter, Eurocopter France, 

Aerospatiale Model AS 355 E, AS 355 

F, AS 355 F1, and AS 355 F2 

helicopters, all serial numbers, if 

equipped with Rolls-Royce Corporation 

(formerly Allison) (RRC) engine Model 

250–C20F. EASA advises of multiple 

fatigue cracks in PT 3rd stage wheels. 

Investigation has revealed that crack 

initiation at the hub trailing edge could 

occur in low-cycle fatigue and progress 

in high-cycle fatigue up to separation of 

the blade. According to EASA, RRC has 

determined that detrimental vibrations 

could occur within a particular range of 

turbine speeds, below the normal 

operating range of this helicopter, which 

are a potential contributing factor to 

these failures. This condition, if not 

addressed, could result in fatigue failure 

of a PT 3rd stage wheel, and subsequent 

loss of engine power, release of debris 

and damage to the helicopter, and loss 

of control of the helicopter. 

Accordingly, EASA AD 2020–0266 

requires revising the Normal Procedures 


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Federal Register / Vol. 86, No. 111 / Friday, June 11, 2021 / Proposed Rules 31195 

Section of the applicable RFM or RFM 

supplement, informing flight crews, and 

installing a placard in full view of both 

pilots. 

FAA’s Determination 

These helicopters have been approved 

by EASA and are approved for operation 

in the United States. Pursuant to the 

FAA’s bilateral agreement with the 

European Union, EASA has notified the 

FAA about the unsafe condition 

described in its AD. The FAA is 

proposing this AD after evaluating all 

known relevant information and 

determining that the unsafe condition 

described previously is likely to exist or 

develop on other helicopters of these 

same type designs. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed Airbus Helicopters 

Alert Service Bulletin No. AS355– 

71.00.21, Revision 1, dated November 

10, 2020. This service information 

specifies replacing a note with a caution 

in the Flight Manual to not allow rotor 

speed to stagnate between 279 and 374 

revolutions per minute (RPM) during 

engine acceleration. This service 

information also specifies procedures 

for making and installing a label 

(placard) for the pilot and co-pilot to 

avoid 71–95% N2 steady-state speed 

(avoid operation at 279–374 RPM). 

This service information is reasonably 

available because the interested parties 

have access to it through their normal 

course of business or by the means 

identified in the ADDRESSES section. 

Other Related Service Information 

The FAA also reviewed Rolls-Royce 

Alert Commercial Engine Bulletin A– 

1400, Revision 7, dated January 10, 

2019. This service information specifies 

the speed avoidance range and 

operating procedures depending on the 

PT wheel part number installed. 

Proposed AD Requirements in This 

NPRM 

This proposed AD would require 

revising the existing RFM for your 

helicopter to replace a note with a 

caution to not allow rotor speed to 

stagnate between 279 and 374 RPM. 

This proposed AD would also require 

installing a placard to avoid 71–95% N2 

steady-state speed (avoid operation at 

279–374 RPM). 

Differences Between This Proposed AD 

and the EASA AD 

EASA AD 2020–0266 requires 

compliance within 50 flight hours or 30 

days, whichever occurs first after the 

effective date of its AD, whereas this 

proposed AD would require compliance 

within 50 hours time-in-service after the 

effective date of this AD instead. 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 29 

helicopters of U.S. Registry. Labor rates 

are estimated at $85 per work-hour. 

Based on these numbers, the FAA 

estimates the following costs to comply 

with this proposed AD. 

Revising the existing RFM for your 

helicopter would take about 0.25 workhour for an estimated cost of $21 per 

helicopter and $609 for the U.S. fleet. 

Installing a placard would take about 

0.25 work-hour and parts would cost a 

nominal amount, for an estimated cost 

of $21 per helicopter and $609 for the 

U.S. fleet. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s 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 Agency’s 

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 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, 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 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

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

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

Airbus Helicopters: Docket No. FAA–2021– 

0460; Project Identifier MCAI–2020– 

01620–R. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by July 26, 2021. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Airbus Helicopters 

Model AS355E, AS355F, AS355F1, and 

AS355F2 helicopters, certificated in any 

category, with a Rolls-Royce Corporation 

(formerly Allison) engine Model 250–C20F 

installed. 

(d) Subject 

Joint Aircraft Service Component (JASC) 

Code: 7250, Turbine Section. 

(e) Unsafe Condition 

This AD was prompted by multiple fatigue 

cracks in power turbine (PT) 3rd stage 

wheels. The FAA is issuing this AD to 

prevent fatigue failure of a PT 3rd stage 

wheel. The unsafe condition, if not 

addressed, could result in loss of engine 

power, release of debris and damage to the 

helicopter, and loss of control of the 

helicopter. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Within 50 hours time-in-service after the 

effective date of this AD: 

(1) Revise the existing Rotorcraft Flight 

Manual (RFM) for your helicopter by 

inserting the page applicable to your 

helicopter model and version from Appendix 

4.A. through D., of Airbus Helicopters Alert 

Service Bulletin No. AS355–71.00.21, 

Revision 1, dated November 10, 2020 (ASB 

AS355–71.00.21 Rev 1). Inserting a different 

document with information identical to that 

in Appendix 4.A. through D., of ASB AS355– 


jbell on DSKJLSW7X2PROD with PROPOSALS
31196 Federal Register / Vol. 86, No. 111 / Friday, June 11, 2021 / Proposed Rules 

71.00.21 Rev 1, as applicable to your 

helicopter model and version, is acceptable 

for compliance with the requirement of this 

paragraph. The action required by this 

paragraph may be performed by the owner/ 

operator (pilot) holding at least a private pilot 

certificate and must be entered into the 

aircraft records showing compliance with 

this AD in accordance with § 43.9(a)(1) 

through (4) and § 91.417(a)(2)(v). The record 

must be maintained as required by § 91.417, 

§ 121.380, or § 135.439. 

(2) Install a placard in full view of the pilot 

and co-pilot by following the 

Accomplishment Instructions, paragraph 

3.B., of ASB AS355–71.00.21 Rev 1. 

Note 1 to paragraph (g)(2): Airbus 

Helicopters service information refers to a 

placard as a label. 

(h) Special Flight Permits 

Special flight permits are permitted so long 

as continuous engine operation between 71 

and 88% N2 is avoided. 

(i) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, International Validation 

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 International Validation 

Branch, send it to the attention of the person 

identified in paragraph (j)(1) of this AD. 

Information may be emailed to: 9-AVS-AIR730-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 

(1) For more information about this AD, 

contact Michael Hughlett, Aerospace 

Engineer, General Aviation & Rotorcraft 

Section, International Validation Branch, 

FAA, 10101 Hillwood Pkwy., Fort Worth, TX 

76177; telephone (817) 222–5110; email 

michael.hughlett@faa.gov. 

(2) For service information identified in 

this AD, contact Airbus Helicopters, 2701 

North Forum Drive, Grand Prairie, TX 75052; 

telephone (972) 641–0000 or (800) 232–0323; 

fax (972) 641–3775; or at https://

www.airbus.com/helicopters/services/ 

technical-support.html. You may view this 

referenced service information at the FAA, 

Office of the Regional Counsel, Southwest 

Region, 10101 Hillwood Pkwy., Room 6N– 

321, Fort Worth, TX 76177. For information 

on the availability of this material at the 

FAA, call (817) 222–5110. 

(3) The subject of this AD is addressed in 

European Union Aviation Safety Agency 

(EASA) AD 2020–0266, dated December 8, 

2020. You may view the EASA AD on the 

internet at https://www.regulations.gov in 

Docket No. FAA–2021–0460. 

Issued on June 6, 2021. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2021–12226 Filed 6–10–21; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF THE INTERIOR 

Office of Natural Resources Revenue 

30 CFR Parts 1206 and 1241 

[Docket No. ONRR–2020–0001; DS63644000 

DRT000000.CH7000 212D1113RT] 

RIN 1012–AA27 

ONRR 2020 Valuation Reform and Civil 

Penalty Rule: Notification of Proposed 

Withdrawal 

AGENCY: Office of Natural Resources 

Revenue (‘‘ONRR’’), Interior. 

ACTION: Proposed rule; request for 

comments. 

SUMMARY: ONRR is proposing to 

withdraw the final rule entitled ‘‘ONRR 

2020 Valuation Reform and Civil 

Penalty Rule’’ (‘‘2020 Rule’’). This 

action opens a 60-day comment period 

to allow interested parties to comment 

on ONRR’s proposed withdrawal of the 

2020 Rule. 

DATES: The final rule published on 

January 15, 2021, at 86 FR 4612, which 

was delayed at 86 FR 9286 on February 

12, 2021, and 86 FR 20032 on April 16, 

2021, is proposed to be withdrawn. To 

be assured consideration, comments 

must be received at one of the addresses 

provided below by 11:59 p.m. EST on 

August 10, 2021. 

ADDRESSES: You may submit comments 

to ONRR using one of the following two 

methods. Please reference the 

Regulation Identifier Number (‘‘RIN’’) 

for this action, ‘‘RIN 1012–AA27,’’ in 

your comment: 

• Electronically via the Federal 

eRulemaking Portal: Please visit https:// 

www.regulations.gov. In the Search Box, 

enter Docket ID ‘‘ONRR–2020–0001’’ 

and click ‘‘search’’ to view the 

publications associated with the docket 

folder. Locate the document with an 

open comment period and then click 

‘‘Comment.’’ Follow the instructions to 

submit your public comments prior to 

the close of the comment period. 

• Email Submissions: Please submit 

your comments via email at ONRR_

RegulationsMailbox@onrr.gov with 

‘‘RIN 1012–AA27’’ listed in the subject 

line of your message. Email submissions 

must be postmarked on or before the 

close of the comment period. 

Instructions: All comments must 

include the agency name and docket 

number or RIN for this rulemaking. All 

comments, including any personal 

identifying information or confidential 

business information contained in a 

comment, will be posted without 

change to https://www.regulations.gov. 

Docket: For access to the docket to 

read background documents or 

comments received, go to https://

www.regulations.gov and locate the 

docket folder by searching the Docket ID 

(ONRR–2020–0001) or RIN number (RIN 

1012–AA27). 

FOR FURTHER INFORMATION CONTACT: For 

questions, contact Luis Aguilar, 

Regulatory Specialist, at (303) 231–3418 

or by email at ONRR_

RegulationsMailbox@onrr.gov. 

SUPPLEMENTARY INFORMATION: 

TABLE OF ABBREVIATIONS AND COMMONLY USED ACRONYMS IN THIS PROPOSED RULE

Abbreviation What it means 

2016 Valuation Rule ............................. ONRR’s Consolidated Federal Oil and Gas and Federal and Indian Coal Valuation Reform Rule, 81 FR 

43338 (July 1, 2016). 

2016 Civil Penalty Rule ........................ ONRR’s Amendments to Civil Penalty Regulations, 81 FR 50306 (August 1, 2016). 

2017 Repeal Rule ................................ ONRR’s Repeal of the 2016 Valuation Rule, 82 FR 36934 (August 7, 2017). 

ALJ ....................................................... Administrative Law Judge. 

APA ...................................................... Administrative Procedure Act of 1946, as amended. 

API ........................................................ American Petroleum Institute. 

BLM ...................................................... Bureau of Land Management. 

BLS ....................................................... Bureau of Labor Statistics. 

BOEM ................................................... Bureau of Ocean Energy Management. 

BSEE .................................................... Bureau of Safety and Environmental Enforcement. 

Deepwater Policy ................................. MMS’s May 20, 1999, memorandum entitled ‘‘Guidance for Determining Transportation Allowances for 

Production from Leases in Water Depths Greater Than 200 Meters’’. 


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