23474 Federal Register / Vol. 87, No. 76 / Wednesday, April 20, 2022 / Proposed Rules 

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Confidential Business Information 

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actively encourages the participation 

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ee.doe.gov. 

Signing Authority 

This document of the Department of 

Energy was signed on April 14, 2022, by 

Kelly J. Speakes-Backman, Principal 

Deputy Assistant Secretary for Energy 

Efficiency and Renewable Energy, 

pursuant to delegated authority from the 

Secretary of Energy. That document 

with the original signature and date is 

maintained by DOE. For administrative 

purposes only, and in compliance with 

requirements of the Office of the Federal 

Register, the undersigned DOE Federal 

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 April 15, 

2022. 

Treena V. Garrett, 

Federal Register Liaison Officer, U.S. 

Department of Energy. 

[FR Doc. 2022–08441 Filed 4–19–22; 8:45 am] 

BILLING CODE 6450–01–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2022–0461; Project 

Identifier MCAI–2021–01156–T] 

RIN 2120–AA64 

Airworthiness Directives; BAE 

Systems (Operations) Limited 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to 

supersede Airworthiness Directive (AD) 

2008–16–06, which applies to all BAE 

Systems (Operations) Limited Model 

4101 airplanes. AD 2008–16–06 requires 

the installation of additional bonding 

leads, inspection of existing bonding 

leads for defects, inspection of fuel 

system pipe runs in the wings to ensure 

appropriate clearances are maintained, 

and corrective actions. Since the FAA 

issued AD 2008–16–06, a safety analysis 

by BAE Systems (Operations) Limited 

identified insufficient bonding for the 

crossfeed valve in the fuel tank area. 

This proposed AD would continue to 

require the actions in AD 2008–16–06, 

and add a requirement to install 

additional bonding leads around the 

crossfeed valve and accomplish a 

resistance check. 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 June 6, 2022. 

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 above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 


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For service information identified in 

this NPRM, contact BAE Systems 

(Operations) Limited, Customer 

Information Department, Prestwick 

International Airport, Ayrshire, KA9 

2RW, Scotland, United Kingdom; 

telephone +44 1292 675207; fax +44 

1292 675704; email RApublications@

baesystems.com; internet https://

www.baesystems.com/Businesses/ 

RegionalAircraft/index.htm. You may 

view this service information at the 

FAA, Airworthiness Products Section, 

Operational Safety Branch, 2200 South 

216th St., Des Moines, WA. For 

information on the availability of this 

material at the FAA, call 206–231–3195. 

Examining the AD Docket 

You may examine the AD docket on 

the internet at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2022– 

0461; 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 

mandatory continuing airworthiness 

information (MCAI), any comments 

received, and other information. The 

street address for Docket Operations is 

listed above. Comments will be 

available in the AD docket shortly after 

receipt. 

FOR FURTHER INFORMATION CONTACT: 

Todd Thompson, Aerospace Engineer, 

Large Aircraft Section, International 

Validation Branch, FAA, 2200 South 

216th St., Des Moines, WA 98198; 

telephone and fax 206–231–3228; email 

todd.thompson@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–2022–0461; Project Identifier 

MCAI–2021–01156–T’’ 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 the 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 proposed 

AD. 

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 Todd Thompson, 

Aerospace Engineer, Large Aircraft 

Section, International Validation 

Branch, FAA, 2200 South 216th St., Des 

Moines, WA 98198; telephone and fax 

206–231–3228; email todd.thompson@

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. 

Discussion 

The FAA issued AD 2008–16–06, 

Amendment 39–15624 (73 FR 45346, 

August 5, 2008) (AD 2008–16–06), for 

all BAE Systems (Operations) Limited 

Model 4101 airplanes. AD 2008–16–06 

requires the installation of additional 

bonding leads, inspection of existing 

bonding leads for defects, inspection of 

fuel system pipe runs in the wings to 

ensure appropriate clearances are 

maintained, and corrective actions. 

Corrective actions include replacing any 

defective bonding leads and adjusting 

clearances of the fuel system pipe runs. 

AD 2008–16–06 resulted from a Special 

Federal Aviation Regulation 88 (SFAR 

88) and equivalent Joint Aviation 

Authorities/European Aviation Safety 

Agency (JAA/EASA) policy assessment 

of fuel tank wiring installations in 

which BAE Systems (Operations) 

Limited identified the need for design 

changes to the bonding in the fuel tank 

area of Model 4101 airplanes. The FAA 

issued AD 2008–16–06 to address 

insufficient or defective bonding in the 

fuel tank area, which, if not corrected, 

could lead to ignition of fuel vapors and 

subsequent fuel tank explosion. 

Actions Since AD 2008–16–06 Was 

Issued 

Since the FAA issued AD 2008–16– 

06, a safety analysis by BAE Systems 

(Operations) Limited identified 

insufficient bonding for the crossfeed 

valve in the fuel tank, and determined 

that installing additional bonding leads 

around the crossfeed valve and a 

resistance check are required. 

The Civil Aviation Authority (CAA), 

which is the aviation authority for the 

United Kingdom, has issued CAA AD 

G–2021–0013, dated October 21, 2021 

(also referred to as the MCAI), to correct 

an unsafe condition for all BAE Systems 

(Operations) Limited Model 4101 

airplanes. You may examine the MCAI 

in the AD docket on the internet at 

https://www.regulations.gov by 

searching for and locating Docket No. 

FAA–2022–0461. 

This proposed AD was prompted by 

a report that there is insufficient 

bonding of the crossfeed valve in the 

fuel tank area. The FAA is proposing 

this AD to address insufficient or 

defective bonding in the fuel tank area, 

which, if not corrected, could lead to 

ignition of fuel vapors and subsequent 

fuel tank explosion. See the MCAI for 

additional background information. 

Related Service Information Under 1 

CFR Part 51 

BAE Systems (Operations) Limited 

has issued Service Bulletin J41–28–013, 

Revision 2, dated July 8, 2019. This 

service information describes 

procedures for installation of additional 

bonding leads on components within 

the dry bay at Rib 1 on the airplane 

centerline and below the fuselage 

(around the crossfeed valve), a 

resistance check, an inspection of 

existing bonding leads for defects, an 

inspection for clearance of all fuel 

system pipe runs in the wings, and 

corrective actions, as necessary. 

Corrective actions include replacing any 

defective bonding leads and adjusting 

clearances of the fuel system pipe runs. 

This proposed AD would also require 

BAE Systems (Operations) Limited 

Service Bulletin J41–28–013, Revision 1, 

dated January 10, 2008, which the 

Director of the Federal Register 

approved for incorporation by reference 

as of September 9, 2008 (73 FR 45346, 

August 5, 2008). 

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. 

FAA’s Determination 

This product has been approved by 

the aviation authority of another 


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23476 Federal Register / Vol. 87, No. 76 / Wednesday, April 20, 2022 / Proposed Rules 

country, and is approved for operation 

in the United States. Pursuant to the 

FAA’s bilateral agreement with the State 

of Design Authority, the FAA has been 

notified of the unsafe condition 

described in the MCAI and service 

information referenced above. The FAA 

is proposing this AD because the FAA 

evaluated all the relevant information 

and determined the unsafe condition 

described previously is likely to exist or 

develop on other products of the same 

type design. 

Proposed Requirements of This NPRM 

This proposed AD would retain all 

requirements of AD 2008–16–06. This 

proposed AD would also require 

accomplishing the actions specified in 

the service information described 

previously. 

Costs of Compliance 

The FAA estimates that this proposed 

AD affects 12 airplanes of U.S. registry. 

The FAA estimates the following costs 

to comply with this proposed AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Retained actions from AD 2008–16–06 ......... 80 work-hours × $85 per hour = $6,800 ........ $1,700 $8,500 $102,000 

New proposed actions .................................... 2 work-hours × $85 per hour = $170 ............. 1,700 1,870 22,440 

ESTIMATED COSTS OF ON-CONDITION ACTIONS

Labor cost Parts cost Cost per 

product 

1 work-hour × $85 per hour = $85 .......................................................................................................................... $0 $85 

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 has 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) 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. 

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: 

■ a. Removing Airworthiness Directive 

(AD) 2008–16–06, Amendment 39– 

15624 (73 FR 45346, August 5, 2008); 

and 

■ b. Adding the following new AD: 

BAE Systems (Operations) Limited: Docket 

No. FAA–2022–0461; Project Identifier 

MCAI–2021–01156–T. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by June 6, 2022. 

(b) Affected ADs 

This AD replaces AD 2008–16–06, 

Amendment 39–15624 (73 FR 45346, August 

5, 2008) (AD 2008–16–06). 

(c) Applicability 

This AD applies to BAE Systems 

(Operations) Limited Model 4101 airplanes, 

certificated in any category, all serial 

numbers. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 28, Fuel. 

(e) Reason 

This AD was prompted by a report that 

there is insufficient bonding of the crossfeed 

valve in the fuel tank area. The FAA is 

issuing this AD to address insufficient or 

defective bonding in the fuel tank area, 

which, if not corrected, could lead to ignition 

of fuel vapors and subsequent fuel tank 

explosion. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Retained Actions, With Revised Service 

Information 

This paragraph restates the requirements of 

paragraph (f) of AD 2008–16–06, with revised 

service information. Within 24 months after 

September 9, 2008 (the effective date of AD 

2008–16–06), unless already done, do the 

actions specified in paragraphs (g)(1) through 

(3) of this AD. 

(1) Inspect the bonding leads between ribs 

1 and 9, and between ribs 16 and 19, in the 

left-hand (LH) and right-hand (RH) wings in 

accordance with paragraph 2.B.(2) of the 

Accomplishment Instructions of BAE 

Systems (Operations) Limited Service 

Bulletin J41–28–013, Revision 1, dated 

January 10, 2008; or BAE Systems 

(Operations) Limited Service Bulletin J41– 

28–013, Revision 2, dated July 8, 2019; and, 

before next flight, replace all defective 

bonding leads with airworthy parts in 

accordance with BAE Systems (Operations) 

Limited Service Bulletin J41–28–013, 


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Federal Register / Vol. 87, No. 76 / Wednesday, April 20, 2022 / Proposed Rules 23477 

Revision 1, dated January 10, 2008; or BAE 

Systems (Operations) Limited Service 

Bulletin J41–28–013, Revision 2, dated July 

8, 2019. As of the effective date of this AD, 

BAE Systems (Operations) Limited Service 

Bulletin J41–28–013, Revision 2, dated July 

8, 2019, must be used for the actions required 

by this paragraph. 

(2) Inspect all fuel system pipe runs inside 

the LH and RH wings in accordance with 

paragraph 2.B.(3) of the Accomplishment 

Instructions of BAE Systems (Operations) 

Limited Service Bulletin J41–28–013, 

Revision 1, dated January 10, 2008; or BAE 

Systems (Operations) Limited Service 

Bulletin J41–28–013, Revision 2, dated July 

8, 2019; and, if incorrect clearances are 

found, before next flight, adjust clearances in 

accordance with BAE Systems (Operations) 

Limited Service Bulletin J41–28–013, 

Revision 1, dated January 10, 2008; or BAE 

Systems (Operations) Limited Service 

Bulletin J41–28–013, Revision 2, dated July 

8, 2019. As of the effective date of this AD, 

BAE Systems (Operations) Limited Service 

Bulletin J41–28–013, Revision 2, dated July 

8, 2019, must be used for the actions required 

by this paragraph. 

(3) Install additional electrical bonding of 

components within the LH and RH wings in 

accordance with paragraphs 2.B.(4) through 

2.B.(15) of the Accomplishment Instructions 

of BAE Systems (Operations) Limited Service 

Bulletin J41–28–013, Revision 1, dated 

January 10, 2008; or paragraphs 2.B.(4) and 

2.B.(6) through 2.B.(16) inclusive of BAE 

Systems (Operations) Limited Service 

Bulletin J41–28–013, Revision 2, dated July 

8, 2019. As of the effective date of this AD, 

BAE Systems (Operations) Limited Service 

Bulletin J41–28–013, Revision 2, dated July 

8, 2019, must be used for the actions required 

by this paragraph. 

(h) New Requirement of This AD: Replace 

Bolts and Washers Securing Crossfeed Valve 

Within 24 months after the effective date 

of this AD, install additional bonding leads 

on components within the dry bay at Rib 1 

on the airplane centerline and below the 

fuselage (around the crossfeed valve) and 

perform a resistance check in accordance 

with paragraph 2.B.(5) of BAE Systems 

(Operations) Limited Service Bulletin J41– 

28–013, Revision 2, dated July 8, 2019. 

(i) Other FAA AD Provisions 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, Large Aircraft 

Section, 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 responsible Flight 

Standards Office, as appropriate. If sending 

information directly to the Large Aircraft 

Section, International Validation Branch, 

send it to the attention of the person 

identified in paragraph (j)(2) of this AD. 

Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov. Before using any 

approved AMOC, notify your appropriate 

principal inspector, or lacking a principal 

inspector, the manager of the responsible 

Flight Standards Office. 

(2) Contacting the Manufacturer: For any 

requirement in this AD to obtain instructions 

from a manufacturer, the instructions must 

be accomplished using a method approved 

by the Manager, Large Aircraft Section, 

International Validation Branch, FAA; or the 

Civil Aviation Authority (CAA); or BAE 

Systems (Operations) Limited’s CAA Design 

Organization Approval (DOA). If approved by 

the DOA, the approval must include the 

DOA-authorized signature. 

(j) Related Information 

(1) Refer to Mandatory Continuing 

Airworthiness Information (MCAI) CAA AD 

G–2021–0013, dated October 21, 2021, for 

related information. This MCAI may be 

found in the AD docket on the internet at 

https://www.regulations.gov by searching for 

and locating Docket No. FAA–2022–0461. 

(2) For more information about this AD, 

contact Todd Thompson, Aerospace 

Engineer, Large Aircraft Section, 

International Validation Branch, FAA, 2200 

South 216th St., Des Moines, WA 98198; 

telephone and fax 206–231–3228; email 

todd.thompson@faa.gov. 

(3) For service information identified in 

this AD, contact BAE Systems (Operations) 

Limited, Customer Information Department, 

Prestwick International Airport, Ayrshire, 

KA9 2RW, Scotland, United Kingdom; 

telephone +44 1292 675207; fax +44 1292 

675704; email RApublications@

baesystems.com; internet https://

www.baesystems.com/Businesses/Regional

Aircraft/index.htm. You may view this 

service information at the FAA, 

Airworthiness Products Section, Operational 

Safety Branch, 2200 South 216th St., Des 

Moines, WA. For information on the 

availability of this material at the FAA, call 

206–231–3195. 

Issued on April 14, 2022. 

Lance T. Gant, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2022–08411 Filed 4–19–22; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2022–0465; Project 

Identifier AD–2022–00330–R] 

RIN 2120–AA64 

Airworthiness Directives; Leonardo 

S.p.a. Helicopters 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to 

supersede Airworthiness Directive (AD) 

2021–20–10, which applies to certain 

Leonardo S.p.a. Model AB139 and 

AW139 helicopters. AD 2021–20–10 

requires removing from service a certain 

part-numbered main gearbox (MGB) 

spherical bearing lock nut (lock nut) 

that is installed on certain partnumbered MGBs and replacing it with 

a newly designed MGB lock nut. AD 

2021–20–10 also prohibits installing any 

MGB with the affected MGB lock nut 

and prohibits installing any affected 

MGB lock nut on any helicopter. Since 

the FAA issued AD 2021–20–10, it was 

discovered that a part number (P/N) was 

incorrectly listed and that the 

applicability needed to be clarified. This 

proposed AD would retain the 

requirements of AD 2021–20–10 and 

would clarify the applicability. 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 June 6, 2022. 

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 above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

For service information identified in 

this NPRM, contact Leonardo S.p.A. 

Helicopters, Emanuele Bufano, Head of 

Airworthiness, Viale G. Agusta 520, 

21017 C. Costa di Samarate (Va) Italy; 

telephone +39–0331–225074; fax +39– 

0331–229046; or at https://customer

portal.leonardocompany.com/en-US/. 

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–2022–0465; 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. 


khammond on DSKJM1Z7X2PROD with PROPOSALS