Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Previously Held by Rolls-Royce plc) Turbofan Engines, 47417-47419 [2021-17980]

Download as PDF Federal Register / Vol. 86, No. 162 / Wednesday, August 25, 2021 / Proposed Rules Enterprise’s purchases of mortgages on multifamily residential housing affordable to low-income families shall be at least 415,000 dwelling units affordable to low-income families in multifamily residential housing financed by mortgages purchased by the Enterprise in each year for 2022, 2023, and 2024. (c) Multifamily very low-income housing subgoal. The benchmark level for each Enterprise’s purchases of mortgages on multifamily residential housing affordable to very low-income families shall be at least 88,000 dwelling units affordable to very low-income families in multifamily residential housing financed by mortgages purchased by the Enterprise in each year for 2022, 2023, and 2024. (d) Small multifamily low-income housing subgoal. The benchmark level for each Enterprise’s purchases of mortgages on small multifamily properties affordable to low-income families shall be at least 23,000 dwelling units affordable to low-income families in small multifamily properties financed by mortgages purchased by the Enterprise in each year for 2022, 2023, and 2024. § 1282.15 [Amended] 5. Amend § 1282.15 by removing paragraph (i). ■ § 1282.16 [Amended] 6. Amend § 1282.16 by removing and reserving paragraph (c)(10). ■ Sandra L. Thompson, Acting Director, Federal Housing Finance Agency. [FR Doc. 2021–18008 Filed 8–24–21; 8:45 am] BILLING CODE 8070–01–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2021–0690; Project Identifier MCAI–2020–01495–E] khammond on DSKJM1Z7X2PROD with PROPOSALS RIN 2120–AA64 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 adopt a new airworthiness directive (AD) for certain Rolls-Royce Deutschland Ltd. & SUMMARY: VerDate Sep<11>2014 16:13 Aug 24, 2021 Jkt 253001 47417 Co KG (RRD) Trent 1000 model turbofan engines. This proposed AD was prompted by the manufacturer revising the engine Time Limits Manual (TLM) life limits of certain critical rotating parts and direct accumulation counting data files. This proposed AD would require the operator to revise the airworthiness limitation section (ALS) of their existing approved aircraft maintenance program (AMP) by incorporating the revised tasks of the applicable TLM for each affected model turbofan engine, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products. Examining the AD Docket You may examine the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA–2021–0690; 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 EASA AD, 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) 238–7088; fax: (781) 238– 7199; email: kevin.m.clark@faa.gov. SUPPLEMENTARY INFORMATION: The FAA must receive comments on this proposed AD by October 12, 2021. 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–2021–0690; Project Identifier MCAI–2020–01495–E’’ 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. DATES: 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 material that is proposed for IBR in this AD, contact EASA, KonradAdenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 000; email: ADs@easa.europa.eu; website: https://www.easa.europa.eu. You may find this material on the EASA website at https://ad.easa.europa.eu. For RRD 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; 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. The EASA material is also available at https:// www.regulations.gov by searching for and locating Docket No. FAA–2021– 0690. ADDRESSES: PO 00000 Frm 00020 Fmt 4702 Sfmt 4702 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 E:\FR\FM\25AUP1.SGM 25AUP1 47418 Federal Register / Vol. 86, No. 162 / Wednesday, August 25, 2021 / Proposed Rules 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. life limits of certain critical rotating parts. The FAA also reviewed Chapter 05– 20 of RR Trent 1000 TLM T–TRENT– 10RRT, dated August 1, 2020. RR Trent 1000 TLM T–TRENT–10RRT, Chapter 05–20, identifies the critical rotating part inspection thresholds and intervals. Background FAA’s Determination EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 2020–0243, dated November 5, 2020 (EASA AD 2020–0243), to correct an unsafe condition on RRD Trent 1000–AE3, Trent 1000–CE3, Trent 1000–D3, Trent 1000–G3, Trent 1000–H3, Trent 1000– J3, Trent 1000–K3, Trent 1000–L3, Trent 1000–M3, Trent 1000–N3, Trent 1000– P3, Trent 1000–Q3, and Trent 1000–R3 model turbofan engines. This proposed AD was prompted by the manufacturer revising the engine TLM life limits of certain critical rotating parts and updating certain maintenance tasks. The FAA is proposing this AD to prevent the failure of critical rotating parts. These engines have been approved by the aviation authority of another country and are 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 about the unsafe condition described in the EASA AD referenced in this proposed AD. The FAA is issuing this NPRM after determining that the unsafe condition described previously is likely to exist or develop on other products of the same type design. Related Service Information Under 1 CFR Part 51 The FAA reviewed EASA AD 2020– 0243. EASA AD 2020–0243 specifies revising the approved AMP by incorporating the limitations, tasks, and associated thresholds and intervals described in the TLM. This material is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in ADDRESSES. Other Related Service Information The FAA reviewed Chapter 05–10 of Rolls-Royce (RR) Trent 1000 TLM T– TRENT–10RRT, dated August 1, 2020. RR Trent 1000 TLM T–TRENT–10RRT, Chapter 05–10, identifies the reduced Proposed AD Requirements in This NPRM This proposed AD would require accomplishing the actions specified in EASA AD 2020–0243, described previously, as incorporated by reference, except for any differences identified as exceptions in the regulatory text of this proposed AD and except as discussed under ‘‘Differences Between this Proposed AD and the EASA AD.’’ Explanation of Required Compliance Information In the FAA’s ongoing efforts to improve the efficiency of the AD process, the FAA initially worked with Airbus and EASA to develop a process to use certain EASA ADs as the primary source of information for compliance with requirements for corresponding FAA ADs. The FAA has since coordinated with other manufacturers and civil aviation authorities (CAAs) to use this process. As a result, EASA AD 2020–0243 will be incorporated by reference in the FAA final rule. This proposed AD would require compliance with EASA AD 2020–0243 in its entirety, through that incorporation, except for any differences identified as exceptions in the regulatory text of this proposed AD. Using common terms that are the same as the heading of a particular section in EASA AD 2020– 0243 does not mean that operators need comply only with that section. For example, where the AD requirement refers to ‘‘all required actions and compliance times,’’ compliance with this AD requirement is not limited to the section titled ‘‘Required Action(s) and Compliance Time(s)’’ in EASA AD 2020–0243. Service information specified in EASA AD 2020–0243 that is required for compliance with it will be available at https://www.regulations.gov by searching for and locating Docket No. FAA–2021–0690 after the FAA final rule is published. Differences Between This Proposed AD and the EASA AD This AD does not mandate the ‘‘Maintenance Tasks and Replacement of Critical Parts’’ and ‘‘Corrective Action(s)’’ sections of EASA AD 2020– 0243. Where EASA AD 2020–0243 requires compliance from its effective date, this proposed AD would require using the effective date of this AD. Where EASA AD 2020–0243 requires revising the AMP within 12 months from its effective date, this proposed AD would require revising the existing AMP within 90 days after the effective date of this AD. This AD does not mandate compliance with the ‘‘Remarks’’ section of EASA AD 2020–0243. Costs of Compliance The FAA estimates that this AD, if adopted as proposed, would affect 4 engines installed on airplanes of U.S. registry. The FAA estimates the following costs to comply with this proposed AD: khammond on DSKJM1Z7X2PROD with PROPOSALS ESTIMATED COSTS Action Labor cost Revise the ALS of the AMP ............................ 1 work-hour × $85 per hour = $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 VerDate Sep<11>2014 16:13 Aug 24, 2021 Jkt 253001 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 PO 00000 Frm 00021 Fmt 4702 Sfmt 4702 Cost per product Parts cost $0 $85 Cost on U.S. operators $340 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. E:\FR\FM\25AUP1.SGM 25AUP1 Federal Register / Vol. 86, No. 162 / Wednesday, August 25, 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. (e) Unsafe Condition This AD was prompted by the manufacturer revising the engine Time Limits Manual life limits of certain critical rotating parts and direct accumulation counting data files. The FAA is issuing this AD to prevent the failure of critical rotating parts. The unsafe condition, if not addressed, could result in failure of one or more engines, loss of thrust control, and loss of the airplane. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. (h) Exceptions to EASA AD 2020–0243 (1) The requirements specified in paragraphs (1) and (2) of EASA AD 2020– 0243 are not required by this AD. (2) Where EASA AD 2020–0243 requires compliance from its effective date, this AD requires using the effective date of this AD. (3) Paragraph (3) of EASA AD 2020–0243 specifies revising the approved aircraft maintenance program (AMP) within 12 months after its effective date, but this AD requires revising the existing approved AMP within 90 days after the effective date of this AD. (4) This AD does not mandate compliance with the ‘‘Remarks’’ section of EASA AD 2020–0243. 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: ■ Rolls-Royce Deutschland Ltd & Co KG (Type Certificate previously held by RollsRoyce plc): Docket No. FAA–2021–0690; Project Identifier MCAI–2020–01495–E. (a) Comments Due Date The FAA must receive comments on this airworthiness directive (AD) by October 12, 2021. khammond on DSKJM1Z7X2PROD with PROPOSALS (b) Affected ADs None. (c) Applicability This AD applies to Rolls-Royce Deutschland Ltd. & Co KG (Type Certificate previously held by Rolls-Royce plc) Trent 1000–AE3, Trent 1000–CE3, Trent 1000–D3, Trent 1000–G3, Trent 1000–H3, Trent 1000– J3, Trent 1000–K3, Trent 1000–L3, Trent 1000–M3, Trent 1000–N3, Trent 1000–P3, Trent 1000–Q3, and Trent 1000–R3 model turbofan engines. (d) Subject Joint Aircraft System Component (JASC) Code 7200, Engine (Turbine/Turboprop). VerDate Sep<11>2014 16:13 Aug 24, 2021 Jkt 253001 (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions Except as specified in paragraph (h) of this AD: Perform all required actions within the compliance times specified in, and in accordance with, European Union Aviation Safety Agency AD 2020–0243, dated November 5, 2020 (EASA AD 2020–0243). (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 paragraph (j)(2) of this AD. 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. (j) Related Information (1) For more information about EASA AD 2020–0243, contact EASA, KonradAdenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 000; email: ADs@ easa.europa.eu. You may find this material on the EASA website at https:// ad.easa.europa.eu. You may view this material 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. PO 00000 Frm 00022 Fmt 4702 Sfmt 4702 47419 This material may be found in the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA–2021–0690. (2) For more information about this AD, contact Kevin M. Clark, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: (781) 238–7088; fax: (781) 238–7199; email: kevin.m.clark@faa.gov. (3) For Rolls-Royce Deutschland service information identified in this AD, 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; website: https:// www.rolls-royce.com/contact-us.aspx. You may view this material 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. Issued on August 17, 2021. Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2021–17980 Filed 8–24–21; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2021–0298; Project Identifier MCAI–2020–01549–T] RIN 2120–AA64 Airworthiness Directives; Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Proposed rule; withdrawal. AGENCY: The FAA is withdrawing a notice of proposed rulemaking (NPRM) that proposed to adopt a new airworthiness directive (AD) that would have applied to certain Airbus Canada Limited Partnership Model BD–500– 1A10 airplanes. The NPRM would have required an inspection of the lowpressure distribution supply duct to determine the part number, and replacement if necessary, as specified in a Transport Canada Civil Aviation (TCCA) AD. Since issuance of the NPRM, the FAA has determined that the affected operator has already addressed the unsafe condition by incorporating the proposed required actions on the affected airplanes. Accordingly, the NPRM is withdrawn. DATES: As of August 25, 2021, the proposed rule, which was published in SUMMARY: E:\FR\FM\25AUP1.SGM 25AUP1

Agencies

[Federal Register Volume 86, Number 162 (Wednesday, August 25, 2021)]
[Proposed Rules]
[Pages 47417-47419]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-17980]


=======================================================================
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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-0690; Project Identifier MCAI-2020-01495-E]
RIN 2120-AA64


Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG 
(Type Certificate Previously Held by Rolls-Royce plc) Turbofan Engines

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 Rolls-Royce Deutschland Ltd. & Co KG (RRD) Trent 1000 model 
turbofan engines. This proposed AD was prompted by the manufacturer 
revising the engine Time Limits Manual (TLM) life limits of certain 
critical rotating parts and direct accumulation counting data files. 
This proposed AD would require the operator to revise the airworthiness 
limitation section (ALS) of their existing approved aircraft 
maintenance program (AMP) by incorporating the revised tasks of the 
applicable TLM for each affected model turbofan engine, as specified in 
a European Union Aviation Safety Agency (EASA) AD, which is proposed 
for incorporation by reference (IBR). 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 October 12, 
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 above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    For material that is proposed for IBR in this AD, contact EASA, 
Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 
000; email: [email protected]; website: https://www.easa.europa.eu. 
You may find this material on the EASA website at https://ad.easa.europa.eu. For RRD 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; 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. The EASA material is also available at 
https://www.regulations.gov by searching for and locating Docket No. 
FAA-2021-0690.

Examining the AD Docket

    You may examine the AD docket at https://www.regulations.gov by 
searching for and locating Docket No. FAA-2021-0690; 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 EASA AD, 
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) 238-7088; fax: (781) 238-7199; email: 
[email protected].

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-2021-0690; Project Identifier 
MCAI-2020-01495-E'' 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

[[Page 47418]]

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

    EASA, which is the Technical Agent for the Member States of the 
European Union, has issued EASA AD 2020-0243, dated November 5, 2020 
(EASA AD 2020-0243), to correct an unsafe condition on RRD Trent 1000-
AE3, Trent 1000-CE3, Trent 1000-D3, Trent 1000-G3, Trent 1000-H3, Trent 
1000-J3, Trent 1000-K3, Trent 1000-L3, Trent 1000-M3, Trent 1000-N3, 
Trent 1000-P3, Trent 1000-Q3, and Trent 1000-R3 model turbofan engines.
    This proposed AD was prompted by the manufacturer revising the 
engine TLM life limits of certain critical rotating parts and updating 
certain maintenance tasks. The FAA is proposing this AD to prevent the 
failure of critical rotating parts.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed EASA AD 2020-0243. EASA AD 2020-0243 specifies 
revising the approved AMP by incorporating the limitations, tasks, and 
associated thresholds and intervals described in the TLM. This material 
is reasonably available because the interested parties have access to 
it through their normal course of business or by the means identified 
in ADDRESSES.

Other Related Service Information

    The FAA reviewed Chapter 05-10 of Rolls-Royce (RR) Trent 1000 TLM 
T-TRENT-10RRT, dated August 1, 2020. RR Trent 1000 TLM T-TRENT-10RRT, 
Chapter 05-10, identifies the reduced life limits of certain critical 
rotating parts.
    The FAA also reviewed Chapter 05-20 of RR Trent 1000 TLM T-TRENT-
10RRT, dated August 1, 2020. RR Trent 1000 TLM T-TRENT-10RRT, Chapter 
05-20, identifies the critical rotating part inspection thresholds and 
intervals.

FAA's Determination

    These engines have been approved by the aviation authority of 
another country and are 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 about the unsafe condition 
described in the EASA AD referenced in this proposed AD. The FAA is 
issuing this NPRM after determining that the unsafe condition described 
previously is likely to exist or develop on other products of the same 
type design.

Proposed AD Requirements in This NPRM

    This proposed AD would require accomplishing the actions specified 
in EASA AD 2020-0243, described previously, as incorporated by 
reference, except for any differences identified as exceptions in the 
regulatory text of this proposed AD and except as discussed under 
``Differences Between this Proposed AD and the EASA AD.''

Explanation of Required Compliance Information

    In the FAA's ongoing efforts to improve the efficiency of the AD 
process, the FAA initially worked with Airbus and EASA to develop a 
process to use certain EASA ADs as the primary source of information 
for compliance with requirements for corresponding FAA ADs. The FAA has 
since coordinated with other manufacturers and civil aviation 
authorities (CAAs) to use this process. As a result, EASA AD 2020-0243 
will be incorporated by reference in the FAA final rule. This proposed 
AD would require compliance with EASA AD 2020-0243 in its entirety, 
through that incorporation, except for any differences identified as 
exceptions in the regulatory text of this proposed AD. Using common 
terms that are the same as the heading of a particular section in EASA 
AD 2020-0243 does not mean that operators need comply only with that 
section. For example, where the AD requirement refers to ``all required 
actions and compliance times,'' compliance with this AD requirement is 
not limited to the section titled ``Required Action(s) and Compliance 
Time(s)'' in EASA AD 2020-0243. Service information specified in EASA 
AD 2020-0243 that is required for compliance with it will be available 
at https://www.regulations.gov by searching for and locating Docket No. 
FAA-2021-0690 after the FAA final rule is published.

Differences Between This Proposed AD and the EASA AD

    This AD does not mandate the ``Maintenance Tasks and Replacement of 
Critical Parts'' and ``Corrective Action(s)'' sections of EASA AD 2020-
0243. Where EASA AD 2020-0243 requires compliance from its effective 
date, this proposed AD would require using the effective date of this 
AD. Where EASA AD 2020-0243 requires revising the AMP within 12 months 
from its effective date, this proposed AD would require revising the 
existing AMP within 90 days after the effective date of this AD. This 
AD does not mandate compliance with the ``Remarks'' section of EASA AD 
2020-0243.

Costs of Compliance

    The FAA estimates that this AD, if adopted as proposed, would 
affect 4 engines installed on airplanes of U.S. registry.
    The FAA estimates the following costs to comply with this proposed 
AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
                Action                         Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Revise the ALS of the AMP.............  1 work-hour x $85 per                 $0             $85            $340
                                         hour = $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.

[[Page 47419]]

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 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

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


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness 
directive:

Rolls-Royce Deutschland Ltd & Co KG (Type Certificate previously 
held by Rolls-Royce plc): Docket No. FAA-2021-0690; Project 
Identifier MCAI-2020-01495-E.

(a) Comments Due Date

    The FAA must receive comments on this airworthiness directive 
(AD) by October 12, 2021.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Rolls-Royce Deutschland Ltd. & Co KG (Type 
Certificate previously held by Rolls-Royce plc) Trent 1000-AE3, 
Trent 1000-CE3, Trent 1000-D3, Trent 1000-G3, Trent 1000-H3, Trent 
1000-J3, Trent 1000-K3, Trent 1000-L3, Trent 1000-M3, Trent 1000-N3, 
Trent 1000-P3, Trent 1000-Q3, and Trent 1000-R3 model turbofan 
engines.

(d) Subject

    Joint Aircraft System Component (JASC) Code 7200, Engine 
(Turbine/Turboprop).

(e) Unsafe Condition

    This AD was prompted by the manufacturer revising the engine 
Time Limits Manual life limits of certain critical rotating parts 
and direct accumulation counting data files. The FAA is issuing this 
AD to prevent the failure of critical rotating parts. The unsafe 
condition, if not addressed, could result in failure of one or more 
engines, loss of thrust control, and loss of the airplane.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Required Actions

    Except as specified in paragraph (h) of this AD: Perform all 
required actions within the compliance times specified in, and in 
accordance with, European Union Aviation Safety Agency AD 2020-0243, 
dated November 5, 2020 (EASA AD 2020-0243).

(h) Exceptions to EASA AD 2020-0243

    (1) The requirements specified in paragraphs (1) and (2) of EASA 
AD 2020-0243 are not required by this AD.
    (2) Where EASA AD 2020-0243 requires compliance from its 
effective date, this AD requires using the effective date of this 
AD.
    (3) Paragraph (3) of EASA AD 2020-0243 specifies revising the 
approved aircraft maintenance program (AMP) within 12 months after 
its effective date, but this AD requires revising the existing 
approved AMP within 90 days after the effective date of this AD.
    (4) This AD does not mandate compliance with the ``Remarks'' 
section of EASA AD 2020-0243.

(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 paragraph (j)(2) of this AD. Information may be 
emailed to: [email protected].
    (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 EASA AD 2020-0243, contact EASA, 
Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 
000; email: [email protected]. You may find this material on the 
EASA website at https://ad.easa.europa.eu. You may view this 
material 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. This material may be found in the AD docket at 
https://www.regulations.gov by searching for and locating Docket No. 
FAA-2021-0690.
    (2) For more information about this AD, contact Kevin M. Clark, 
Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, 
Burlington, MA 01803; phone: (781) 238-7088; fax: (781) 238-7199; 
email: [email protected].
    (3) For Rolls-Royce Deutschland service information identified 
in this AD, 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; website: https://www.rolls-royce.com/contact-us.aspx. You may view this material 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.

    Issued on August 17, 2021.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives, Compliance & Airworthiness 
Division, Aircraft Certification Service.
[FR Doc. 2021-17980 Filed 8-24-21; 8:45 am]
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