Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines, 63885-63888 [2023-19866]

Download as PDF lotter on DSK11XQN23PROD with PROPOSALS1 Federal Register / Vol. 88, No. 179 / Monday, September 18, 2023 / Proposed Rules completed 1 year of current continuous service in the same or similar positions and who is either a supervisory or management employee or an employee engaged in personnel work in other than a purely nonconfidential clerical capacity, including such an employee who is moved involuntarily into a different schedule of the excepted service and still occupies that position or a similar position; (5) An employee in the excepted service who is a nonpreference eligible in an Executive agency as defined at 5 U.S.C. 105, and who has completed 2 years of current continuous service in the same or similar positions under other than a temporary appointment limited to 2 years or less, including such an employee who is moved involuntarily into a different schedule of the excepted service and still occupies that position or a similar position; (6) An employee with competitive status who occupies a position in Schedule B of part 213 of this chapter, including such an employee whose position is moved involuntarily into a different schedule of the excepted service and still occupies that position; (7) An employee who was in the competitive service and had competitive status as defined in § 212.301 of this chapter at the time the employee’s position was first listed under any schedule of the excepted service and who still occupies that position; (8) An employee of the Department of Veterans Affairs appointed under 38 U.S.C. 7401(3), including such an employee who is moved involuntarily into a different schedule of the excepted service and still occupies that position or a similar position; and (9) An employee of the Government Publishing Office, including such an employee who is moved involuntarily into the excepted service. (d) * * * (2) An employee whose position has been determined to be of a confidential, policy-determining, policy-making, or policy-advocating character, as defined in § 210.102 of this chapter by— (i) The President for a position that the President has excepted from the competitive service; (ii) The Office of Personnel Management for a position that the Office has excepted from the competitive service; or (iii) The President or the head of an agency for a position excepted from the competitive service by statute. * * * * * [FR Doc. 2023–19806 Filed 9–15–23; 8:45 am] BILLING CODE 6325–39–P VerDate Sep<11>2014 17:00 Sep 15, 2023 Jkt 259001 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2023–1881; Project Identifier MCAI–2023–00738–E] RIN 2120–AA64 Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: The FAA proposes to supersede Airworthiness Directive (AD) 2021–25–04, which applies to certain Rolls-Royce Deutschland Ltd & Co KG (RRD) Model Trent 1000 engines. AD 2021–25–04 requires operators to revise the airworthiness limitations section (ALS) of their existing approved continuous airworthiness maintenance program by incorporating the revised tasks of the applicable time limits manual (TLM) for each affected model turbofan engine. Since the FAA issued AD 2021–25–04, the manufacturer revised the TLM to introduce new or more restrictive tasks and limitations and associated thresholds and intervals for life-limited parts, which prompted this proposed AD. This proposed AD would require revising the ALS of the operator’s existing approved engine maintenance or inspection program, as applicable, to incorporate new or more restrictive tasks and limitations and associated thresholds and intervals for life-limited parts, 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 NPRM by November 2, 2023. 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 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. AD Docket: You may examine the AD docket at regulations.gov under Docket SUMMARY: PO 00000 Frm 00024 Fmt 4702 Sfmt 4702 63885 No. FAA–2023–1881; 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. Material Incorporated by Reference: • For service information that is identified in this NPRM, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 000; email: ADs@easa.europa.eu; website: easa.europa.eu. You may find this material on the EASA website at ad.easa.europa.eu. It is also available at regulations.gov under Docket No. FAA– 2023–1881. • 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 (817) 222–5110. FOR FURTHER INFORMATION CONTACT: Sungmo Cho, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: (781) 238– 7241; email: sungmo.d.cho@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–2023–1881; Project Identifier MCAI–2023–00738–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 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 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 E:\FR\FM\18SEP1.SGM 18SEP1 63886 Federal Register / Vol. 88, No. 179 / Monday, September 18, 2023 / Proposed Rules 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 Sungmo Cho, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198. Any commentary that the FAA receives which is not specifically designated as CBI will be placed in the public docket for this rulemaking. lotter on DSK11XQN23PROD with PROPOSALS1 Background The FAA issued AD 2021–25–04, Amendment 39–21847 (86 FR 71129, December 15, 2021) (AD 2021–25–04), for all RRD Model 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 (Trent 1000) engines. AD 2021–25–04 was prompted by an MCAI originated by EASA, which is the Technical Agent for the Member States of the European Union. EASA issued EASA AD 2020– 0243, dated November 5, 2020 (EASA AD 2020–0243) to address the manufacturer revising the engine TLM life limits of certain critical rotating parts and updating certain maintenance tasks. AD 2021–25–04 requires operators to revise the ALS of their existing approved aircraft maintenance program by incorporating the revised tasks of the applicable TLM for each affected model turbofan engine, as specified in EASA AD 2020–0243. The FAA issued AD 2021–25–04 to prevent the failure of critical rotating parts, which could result in failure of one or more engines, loss of thrust control, and loss of the airplane. Actions Since AD 2021–25–04 Was Issued Since the FAA issued AD 2021–25– 04, EASA superseded EASA AD 2020– 0243 with EASA AD 2022–0247, dated December 14, 2022 (EASA AD 2022– VerDate Sep<11>2014 17:00 Sep 15, 2023 Jkt 259001 0247) and then superseded EASA AD 2022–0247 with EASA AD 2023–0115, dated June 7, 2023 (EASA AD 2023– 0115) (also referred to after this as the MCAI). The MCAI states that the manufacturer published a revised engine TLM to introduce new or more restrictive tasks and limitations and associated thresholds and intervals for life-limited parts. You may examine the MCAI in the AD docket at regulations.gov under Docket No. FAA–2023–1881. Related Service Information Under 1 CFR Part 51 The FAA reviewed EASA AD 2023– 0115, which specifies procedures for operators to revise the ALS of the existing approved engine maintenance or inspection program, as applicable, to incorporate new or more restrictive tasks and limitations and associated thresholds and intervals for life-limited parts. 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 ADDRESSES. FAA’s Determination These products 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 this State of Design Authority, it has notified the FAA of the unsafe condition described in the MCAI referenced above. 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 revising the ALS of the operator’s existing approved engine maintenance or inspection program, as applicable, to incorporate new or more restrictive tasks and limitations and associated thresholds and intervals for life-limited parts, which are specified in EASA AD 2023–0115, described previously, except for any differences identified as exceptions in the regulatory text of this proposed AD and as discussed under ‘‘Differences Between this Proposed AD and the MCAI.’’ PO 00000 Frm 00025 Fmt 4702 Sfmt 4702 Explanation of Required Compliance Information In the FAA’s ongoing efforts to improve the efficiency of the AD process, the FAA developed a process to use some civil aviation authority (CAA) ADs as the primary source of information for compliance with requirements for corresponding FAA ADs. The FAA has since coordinated with other manufacturers and CAAs to use this process. As a result, the FAA proposes to incorporate by reference EASA AD 2023–0115 in the FAA final rule. This proposed AD would, therefore, require compliance with EASA AD 2023–0115 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 the EASA AD does not mean that operators need comply only with that section. For example, where the AD requirement refers to ‘‘all required actions within compliance times,’’ compliance with this AD requirement is not limited to the section titled ‘‘Required Action(s) and Compliance Time(s)’’ in EASA AD 2023–0115. Service information required by the EASA AD for compliance will be available at regulations.gov under Docket No. FAA–2023–1881 after the FAA final rule is published. Differences Between This Proposed AD and the MCAI Where paragraph (3) of EASA AD 2023–0115 specifies revising the approved Aircraft Maintenance Programme within 12 months after the effective date of EASA AD 2023–0115, this proposed AD would require revising the ALS of the existing approved engine maintenance or inspection program, as applicable, within 90 days after the effective date of this AD. This proposed AD would not require compliance with paragraphs (1), (2), (4), and (5) of EASA AD 2023–0115. Costs of Compliance The FAA estimates that this AD, if adopted as proposed, would affect 2 engines installed on airplanes of U.S. registry. The FAA estimates the following costs to comply with this proposed AD: E:\FR\FM\18SEP1.SGM 18SEP1 Federal Register / Vol. 88, No. 179 / Monday, September 18, 2023 / Proposed Rules 63887 ESTIMATED COSTS Action Labor cost Parts cost Cost per product Cost on U.S. operators Revise the ALS ...................... 1 work-hour × $85 per hour = $85 ......................................... $0 $85 $170 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. lotter on DSK11XQN23PROD with PROPOSALS1 Regulatory Findings (h) Exceptions to EASA AD 2023–0115 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 2021–25–04, Amendment 39–21847 (86 FR 71129, December 15, 2021); and ■ b. Adding the following new airworthiness directive: ■ ■ Rolls-Royce Deutschland Ltd & Co KG: Docket No. FAA–2023–1881; Project Identifier MCAI–2023–00738–E. (a) Comments Due Date The FAA must receive comments on this airworthiness directive (AD) by November 2, 2023. (b) Affected ADs This AD replaces AD 2021–25–04, Amendment 39–21847 (86 FR 71129, December 15, 2021). 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 that the 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. (c) Applicability This AD applies to Rolls-Royce Deutschland Ltd & Co KG Model 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 engines. List of Subjects in 14 CFR Part 39 (f) Compliance Comply with this AD within the compliance times specified, unless already done. 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: VerDate Sep<11>2014 17:00 Sep 15, 2023 Jkt 259001 (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 (TLM) 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. (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 (EASA) AD 2023–0115, dated June 7, 2023 (EASA AD 2023–0115). PO 00000 Frm 00026 Fmt 4702 Sfmt 4702 (1) Where EASA AD 2023–0115 defines the AMP as the approved Aircraft Maintenance Programme containing the tasks on the basis of which the scheduled maintenance is conducted to ensure the continuing airworthiness of each operated engine, this AD defines the AMP as the aircraft maintenance program containing the tasks on the basis of which the scheduled maintenance is conducted to ensure the continuing airworthiness of each operated airplane. (2) Where EASA AD 2023–0115 refers to its effective date, this AD requires using the effective date of this AD. (3) This AD does not require compliance with paragraphs (1), (2), (4), and (5) of EASA AD 2023–0115. (4) Where paragraph (3) of EASA AD 2023– 0115 specifies revising the approved AMP within 12 months after the effective date of EASA AD 2023–0115, this AD requires revising the airworthiness limitations section of the existing approved engine maintenance or inspection program, as applicable, within 90 days after the effective date of this AD. (5) This AD does not adopt the Remarks paragraph of EASA AD 2023–0115. (i) Provisions for Alternative Actions and Intervals After performing the actions required by paragraph (g) of this AD, no alternative actions and associated thresholds and intervals, including life limits, are allowed unless they are approved as specified in the provisions of the ‘‘Ref. Publications’’ section of EASA AD 2023–0115. (j) Alternative Methods of Compliance (AMOCs) (1) The Manager, AIR–520, Continued Operational Safety 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 branch, send it to the attention of the person identified in paragraph (k) of this AD and email to: ANEAD-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. (k) Additional Information For more information about this AD, contact Sungmo Cho, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: (781) 238–7241; email: sungmo.d.cho@faa.gov. E:\FR\FM\18SEP1.SGM 18SEP1 63888 Federal Register / Vol. 88, No. 179 / Monday, September 18, 2023 / Proposed Rules (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) European Union Aviation Safety Agency (EASA) AD 2023–0115, dated June 7, 2023. (ii) [Reserved] (3) For EASA AD 2023–0115, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 000; email: ADs@easa.europa.eu; website: easa.europa.eu. You may find this EASA AD on the EASA website at ad.easa.europa.eu. (4) You may view this service information at 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 (817) 222–5110. (5) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email: fr.inspection@nara.gov, or go to: www.archives.gov/federal-register/cfr/ibrlocations.html. Issued on September 8, 2023. Ross Landes, Deputy Director for Regulatory Operations, Compliance & Airworthiness Division, Aircraft Certification Service. [FR Doc. 2023–19866 Filed 9–15–23; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2023–1878; Project Identifier MCAI–2022–01582–E] RIN 2120–AA64 Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: The FAA proposes to supersede Airworthiness Directive (AD) 2021–25–03, which applies to all RollsRoyce Deutschland Ltd & Co KG (RRD) Model Trent 7000–72 and Trent 7000– 72C engines. AD 2021–25–03 requires operators to revise the airworthiness limitation section (ALS) of their existing approved continuous airworthiness maintenance program by incorporating the revised tasks of the applicable time limits manual (TLM) for each affected model turbofan engine. Since the FAA lotter on DSK11XQN23PROD with PROPOSALS1 SUMMARY: VerDate Sep<11>2014 17:00 Sep 15, 2023 Jkt 259001 issued AD 2021–25–03, the manufacturer again revised the TLM to introduce new or more restrictive tasks and limitations and associated thresholds and intervals for life-limited parts, which prompted this proposed AD. This proposed AD would require revising the ALS of the operator’s existing approved engine maintenance or inspection program, as applicable, to incorporate new or more restrictive tasks and limitations and associated thresholds and intervals for life-limited parts, 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 NPRM by November 2, 2023. 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 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. AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA–2023–1878; 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. Material Incorporated by Reference: • For service information identified in this NPRM, contact EASA, KonradAdenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 000; email: ADs@easa.europa.eu; website: easa.europa.eu. You may find this material on the EASA website at ad.easa.europa.eu. It is also available at regulations.gov under Docket No. FAA– 2023–1878. • 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 (817) 222–5110. FOR FURTHER INFORMATION CONTACT: Sungmo Cho, Aviation Safety Engineer, PO 00000 Frm 00027 Fmt 4702 Sfmt 4702 FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: (781) 238– 7241; email: sungmo.d.cho@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–2023–1878; Project Identifier MCAI–2022–01582–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 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 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 Sungmo Cho, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198. 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 2021–25–03, Amendment 39–21846 (86 FR 71135, December 15, 2021) (AD 2021–25–03), for all RRD Model Trent 7000–72 and Trent 7000–72C engines. AD 2021–25– 03 was prompted by an MCAI originated E:\FR\FM\18SEP1.SGM 18SEP1

Agencies

[Federal Register Volume 88, Number 179 (Monday, September 18, 2023)]
[Proposed Rules]
[Pages 63885-63888]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2023-19866]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2023-1881; Project Identifier MCAI-2023-00738-E]
RIN 2120-AA64


Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG 
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: The FAA proposes to supersede Airworthiness Directive (AD) 
2021-25-04, which applies to certain Rolls-Royce Deutschland Ltd & Co 
KG (RRD) Model Trent 1000 engines. AD 2021-25-04 requires operators to 
revise the airworthiness limitations section (ALS) of their existing 
approved continuous airworthiness maintenance program by incorporating 
the revised tasks of the applicable time limits manual (TLM) for each 
affected model turbofan engine. Since the FAA issued AD 2021-25-04, the 
manufacturer revised the TLM to introduce new or more restrictive tasks 
and limitations and associated thresholds and intervals for life-
limited parts, which prompted this proposed AD. This proposed AD would 
require revising the ALS of the operator's existing approved engine 
maintenance or inspection program, as applicable, to incorporate new or 
more restrictive tasks and limitations and associated thresholds and 
intervals for life-limited parts, 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 NPRM by November 2, 2023.

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 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.
    AD Docket: You may examine the AD docket at regulations.gov under 
Docket No. FAA-2023-1881; 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.
    Material Incorporated by Reference:
     For service information that is identified in this NPRM, 
contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: 
+49 221 8999 000; email: [email protected]; website: easa.europa.eu. 
You may find this material on the EASA website at ad.easa.europa.eu. It 
is also available at regulations.gov under Docket No. FAA-2023-1881.
     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 (817) 222-5110.

FOR FURTHER INFORMATION CONTACT: Sungmo Cho, Aviation Safety Engineer, 
FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: (781) 238-
7241; 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-2023-1881; Project Identifier 
MCAI-2023-00738-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 
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 
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

[[Page 63886]]

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 Sungmo Cho, Aviation Safety Engineer, FAA, 2200 South 216th 
Street, Des Moines, WA 98198. 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 2021-25-04, Amendment 39-21847 (86 FR 71129, 
December 15, 2021) (AD 2021-25-04), for all RRD Model 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 (Trent 1000) engines. 
AD 2021-25-04 was prompted by an MCAI originated by EASA, which is the 
Technical Agent for the Member States of the European Union. EASA 
issued EASA AD 2020-0243, dated November 5, 2020 (EASA AD 2020-0243) to 
address the manufacturer revising the engine TLM life limits of certain 
critical rotating parts and updating certain maintenance tasks.
    AD 2021-25-04 requires operators to revise the ALS of their 
existing approved aircraft maintenance program by incorporating the 
revised tasks of the applicable TLM for each affected model turbofan 
engine, as specified in EASA AD 2020-0243. The FAA issued AD 2021-25-04 
to prevent the failure of critical rotating parts, which could result 
in failure of one or more engines, loss of thrust control, and loss of 
the airplane.

Actions Since AD 2021-25-04 Was Issued

    Since the FAA issued AD 2021-25-04, EASA superseded EASA AD 2020-
0243 with EASA AD 2022-0247, dated December 14, 2022 (EASA AD 2022-
0247) and then superseded EASA AD 2022-0247 with EASA AD 2023-0115, 
dated June 7, 2023 (EASA AD 2023-0115) (also referred to after this as 
the MCAI). The MCAI states that the manufacturer published a revised 
engine TLM to introduce new or more restrictive tasks and limitations 
and associated thresholds and intervals for life-limited parts.
    You may examine the MCAI in the AD docket at regulations.gov under 
Docket No. FAA-2023-1881.

Related Service Information Under 1 CFR Part 51

    The FAA reviewed EASA AD 2023-0115, which specifies procedures for 
operators to revise the ALS of the existing approved engine maintenance 
or inspection program, as applicable, to incorporate new or more 
restrictive tasks and limitations and associated thresholds and 
intervals for life-limited parts.
    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 ADDRESSES.

FAA's Determination

    These products 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 this State of Design 
Authority, it has notified the FAA of the unsafe condition described in 
the MCAI referenced above. 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 revising the ALS of the operator's 
existing approved engine maintenance or inspection program, as 
applicable, to incorporate new or more restrictive tasks and 
limitations and associated thresholds and intervals for life-limited 
parts, which are specified in EASA AD 2023-0115, described previously, 
except for any differences identified as exceptions in the regulatory 
text of this proposed AD and as discussed under ``Differences Between 
this Proposed AD and the MCAI.''

Explanation of Required Compliance Information

    In the FAA's ongoing efforts to improve the efficiency of the AD 
process, the FAA developed a process to use some civil aviation 
authority (CAA) ADs as the primary source of information for compliance 
with requirements for corresponding FAA ADs. The FAA has since 
coordinated with other manufacturers and CAAs to use this process. As a 
result, the FAA proposes to incorporate by reference EASA AD 2023-0115 
in the FAA final rule. This proposed AD would, therefore, require 
compliance with EASA AD 2023-0115 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 the EASA AD does not 
mean that operators need comply only with that section. For example, 
where the AD requirement refers to ``all required actions within 
compliance times,'' compliance with this AD requirement is not limited 
to the section titled ``Required Action(s) and Compliance Time(s)'' in 
EASA AD 2023-0115. Service information required by the EASA AD for 
compliance will be available at regulations.gov under Docket No. FAA-
2023-1881 after the FAA final rule is published.

Differences Between This Proposed AD and the MCAI

    Where paragraph (3) of EASA AD 2023-0115 specifies revising the 
approved Aircraft Maintenance Programme within 12 months after the 
effective date of EASA AD 2023-0115, this proposed AD would require 
revising the ALS of the existing approved engine maintenance or 
inspection program, as applicable, within 90 days after the effective 
date of this AD.
    This proposed AD would not require compliance with paragraphs (1), 
(2), (4), and (5) of EASA AD 2023-0115.

Costs of Compliance

    The FAA estimates that this AD, if adopted as proposed, would 
affect 2 engines installed on airplanes of U.S. registry.
    The FAA estimates the following costs to comply with this proposed 
AD:

[[Page 63887]]



                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per      Cost on  U.S.
               Action                        Labor cost           Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
Revise the ALS......................  1 work-hour x $85 per                $0              $85             $170
                                       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.

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 that the 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:
0
a. Removing Airworthiness Directive AD 2021-25-04, Amendment 39-21847 
(86 FR 71129, December 15, 2021); and
0
b. Adding the following new airworthiness directive:

Rolls-Royce Deutschland Ltd & Co KG: Docket No. FAA-2023-1881; 
Project Identifier MCAI-2023-00738-E.

(a) Comments Due Date

    The FAA must receive comments on this airworthiness directive 
(AD) by November 2, 2023.

(b) Affected ADs

    This AD replaces AD 2021-25-04, Amendment 39-21847 (86 FR 71129, 
December 15, 2021).

(c) Applicability

    This AD applies to Rolls-Royce Deutschland Ltd & Co KG Model 
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 
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 (TLM) 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 (EASA) AD 
2023-0115, dated June 7, 2023 (EASA AD 2023-0115).

(h) Exceptions to EASA AD 2023-0115

    (1) Where EASA AD 2023-0115 defines the AMP as the approved 
Aircraft Maintenance Programme containing the tasks on the basis of 
which the scheduled maintenance is conducted to ensure the 
continuing airworthiness of each operated engine, this AD defines 
the AMP as the aircraft maintenance program containing the tasks on 
the basis of which the scheduled maintenance is conducted to ensure 
the continuing airworthiness of each operated airplane.
    (2) Where EASA AD 2023-0115 refers to its effective date, this 
AD requires using the effective date of this AD.
    (3) This AD does not require compliance with paragraphs (1), 
(2), (4), and (5) of EASA AD 2023-0115.
    (4) Where paragraph (3) of EASA AD 2023-0115 specifies revising 
the approved AMP within 12 months after the effective date of EASA 
AD 2023-0115, this AD requires revising the airworthiness 
limitations section of the existing approved engine maintenance or 
inspection program, as applicable, within 90 days after the 
effective date of this AD.
    (5) This AD does not adopt the Remarks paragraph of EASA AD 
2023-0115.

(i) Provisions for Alternative Actions and Intervals

    After performing the actions required by paragraph (g) of this 
AD, no alternative actions and associated thresholds and intervals, 
including life limits, are allowed unless they are approved as 
specified in the provisions of the ``Ref. Publications'' section of 
EASA AD 2023-0115.

(j) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, AIR-520, Continued Operational Safety 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 branch, send it to the 
attention of the person identified in paragraph (k) of this AD and 
email 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.

(k) Additional Information

    For more information about this AD, contact Sungmo Cho, Aviation 
Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; 
phone: (781) 238-7241; email: [email protected].

[[Page 63888]]

(l) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (i) European Union Aviation Safety Agency (EASA) AD 2023-0115, 
dated June 7, 2023.
    (ii) [Reserved]
    (3) For EASA AD 2023-0115, contact EASA, Konrad-Adenauer-Ufer 3, 
50668 Cologne, Germany; phone: +49 221 8999 000; email: 
[email protected]; website: easa.europa.eu. You may find this EASA 
AD on the EASA website at ad.easa.europa.eu.
    (4) You may view this service information at 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 (817) 222-5110.
    (5) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, email: [email protected], or go to: www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued on September 8, 2023.
Ross Landes,
Deputy Director for Regulatory Operations, Compliance & Airworthiness 
Division, Aircraft Certification Service.
[FR Doc. 2023-19866 Filed 9-15-23; 8:45 am]
BILLING CODE 4910-13-P
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