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Proposed Rules
Federal Register Vol. 86, No. 59
Tuesday, March 30, 2021

This section of the FEDERAL REGISTER
contains notices to the public of the proposed issuance of rules and regulations. The purpose of these notices is to give interested persons an opportunity to participate in the rule making prior to the adoption of the final rules.

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210198; Project Identifier MCAI202000950E
RIN 2120AA64

Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Type Certificate Previously Held by RollsRoyce plc Turbofan Engines Federal Aviation Administration FAA, DOT.
ACTION: Notice of proposed rulemaking NPRM.
AGENCY:

The FAA proposes to supersede airworthiness directive AD
20201307, which applies to all RollsRoyce Deutschland Ltd & Co KG RRD
Trent 1000D2, Trent 1000J2, and Trent 1000K2 model turbofan engines with a certain part-numbered fuel pump installed. AD 20201307 requires removal and replacement of the fuel pump with a part eligible for installation. Since the FAA issued AD
20201307, the manufacturer determined that an additional partnumbered fuel pump is subject to the same unsafe condition identified in AD
20201307. This proposed AD would add an additional part-numbered fuel pump and additional Trent 1000 model turbofan engines to the applicability.
This proposed AD would require new and reduced life limits, depending on the engine model, for affected fuel pumps. 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 May 14, 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 4932251.

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SUMMARY:

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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 Rolls-Royce plc, P.O. Box 31, Derby, DE24 8BJ, United Kingdom; phone: +44 01332 242424;
website: https www.rolls-royce.com/
contact-us.aspx. You may view this 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 781 238
7759.
Examining the AD Docket You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210198; 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.
FOR FURTHER INFORMATION CONTACT:
Kevin M. Clark, Aviation Safety Engineer, ECO Branch, FAA, 1200
District Avenue, Burlington, MA 01803;
phone: 781 2387088; fax: 781 238
7199; email: kevin.m.clark@faa.gov.
SUPPLEMENTARY INFORMATION:
Comments Invited The FAA invites you to send any written relevant data, views, or arguments about this proposed AD.
Send your comments to an address listed under ADDRESSES. Include Docket No. FAA20210198; Project Identifier MCAI202000950E 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
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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 Kevin M. Clark, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803. Any commentary that the FAA receives which is not specifically designated as CBI will be placed in the public docket for this rulemaking.
Background The FAA issued AD 20201307, Amendment 3921152 85 FR 38312, June 26, 2020, AD 20201307, for all RRD Trent 1000D2, Trent 1000J2, and Trent 1000K2 model turbofan engines with fuel pump, part number G5030FPU01, installed. AD 20201307
was prompted by the manufacturers investigation into an unexpected reduction in fuel pump performance in certain high life fuel pumps. AD 2020
1307 requires removal and replacement of the affected fuel pump with a part eligible for installation. The FAA issued AD 20201307 to reduce the risk of reduced thrust during engine operation.
Actions Since AD 20201307 Was Issued Since the FAA issued AD 202013
07, The European Union Aviation Safety Agency EASA, which is the Technical
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