[Federal Register Volume 89, Number 206 (Thursday, October 24, 2024)]
[Rules and Regulations]
[Pages 84803-84806]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-24505]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2024-2331; Project Identifier MCAI-2024-00169-E; 
Amendment 39-22867; AD 2024-20-08]
RIN 2120-AA64


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

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; request for comments.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for all 
Rolls-Royce Deutschland Ltd & Co KG (RRD) Model Trent XWB-97 engines. 
This AD was prompted by the manufacturer revising the existing engine 
time limits manual (TLM) to introduce new or more restrictive 
instructions and associated thresholds and intervals for life-limited 
parts. This AD requires revising the airworthiness limitations section 
(ALS) of the operator's existing approved engine maintenance or 
inspection program, as applicable, to incorporate new or more 
restrictive instructions and associated thresholds and intervals for 
life-limited parts, as specified in a European Union Aviation Safety 
Agency (EASA) AD, which is incorporated by reference (IBR). The FAA is 
issuing this AD to address the unsafe condition on these products.

DATES: This AD is effective November 8, 2024.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of November 8, 
2024.
    The FAA must receive comments on this AD by December 9, 2024.

[[Page 84804]]


ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, by any of the following methods:
    <bullet> Federal eRulemaking Portal: Go to regulations.gov. Follow 
the instructions for submitting comments.
    <bullet> Fax: (202) 493-2251.
    <bullet> 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.
    <bullet> 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-2024-2331; 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 final rule, 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:
    <bullet> For EASA material identified in this AD, contact EASA, 
Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 
000; email: <a href="/cdn-cgi/l/email-protection#a8e9ecdbe8cdc9dbc986cddddac7d8c986cddd"><span class="__cf_email__" data-cfemail="8ecfcafdceebeffdefa0ebfbfce1feefa0ebfb">[email protected]</span></a>; website: easa.europa.eu. You may find 
this material on the EASA website at ad.easa.europa.eu.
    <bullet> 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 (817) 222-5110. It is also available at 
regulations.gov under Docket No. FAA-2024-2331.

FOR FURTHER INFORMATION CONTACT: Barbara Caufield, Aviation Safety 
Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone: 
(781) 238-7146; email: <a href="/cdn-cgi/l/email-protection#c2a0a3b0a0a3b0a3eca1a3b7a4aba7aea682a4a3a3eca5adb4"><span class="__cf_email__" data-cfemail="761417041417041758151703101f131a123610171758111900">[email protected]</span></a>.

SUPPLEMENTARY INFORMATION:

Comments Invited

    The FAA invites you to send any written data, views, or arguments 
about this final rule. Send your comments to an address listed under 
the ADDRESSES section. Include ``Docket No. FAA-2024-2331; Project 
Identifier MCAI-2024-00169-E'' at the beginning of your comments. The 
most helpful comments reference a specific portion of the final rule, 
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 final rule 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 final rule.

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 AD 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 AD, 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 AD. Submissions containing CBI should be sent to Barbara 
Caufield, 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

    EASA, which is the Technical Agent for the Member States of the 
European Union, has issued EASA AD 2024-0065, dated March 8, 2024 (EASA 
AD 2024-0065) (also referred to as the MCAI), to correct an unsafe 
condition on all RRD Model Trent XWB-97 engines. The MCAI states that 
the manufacturer published a revised TLM introducing new or more 
restrictive tasks and limitations. These new or more restrictive tasks 
and limitations include a change to the engine mount pin inspection 
interval and introducing a new thrust strut inspection.
    You may examine the MCAI in the AD docket at regulations.gov under 
Docket No. FAA-2024-2331.

Material Incorporated by Reference Under 1 CFR Part 51

    The FAA reviewed EASA AD 2024-0065, which specifies instructions 
for accomplishing the actions specified in the applicable TLM, 
including performing maintenance tasks, replacing life-limited parts, 
and revising the existing approved maintenance or inspection program, 
as applicable, 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 
the ADDRESSES section.

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 AD after determining 
that the unsafe condition described previously is likely to exist or 
develop on other products of the same type design.

AD Requirements

    This AD requires accomplishing the actions specified in the MCAI 
described previously, except for any differences identified as 
exceptions in the regulatory text of this AD and except as discussed 
under ``Differences Between this AD and the MCAI.''

Differences Between This AD and the MCAI

    Where EASA AD 2024-0065 specifies revising the approved AMP within 
12 months after the effective date of EASA AD 2024-0065, this AD 
requires revising the ALS of the existing approved aircraft maintenance 
or inspection program, as applicable, within 30 days after the 
effective date of this AD.

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, EASA AD 2024-0065 is incorporated by reference in this AD. This 
AD requires compliance with EASA AD 2024-0065 in its entirety through 
that incorporation, except for any differences identified as exceptions 
in the regulatory text of this AD. Using common terms that are the same 
as the heading of a particular section in EASA

[[Page 84805]]

AD 2024-0065 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 2024-0065. Material required by EASA AD 
2024-0065 for compliance will be available at regulations.gov under 
Docket No. FAA-2024-2331 after this AD is published.

Justification for Immediate Adoption and Determination of the Effective 
Date

    Section 553(b) of the Administrative Procedure Act (APA) (5 U.S.C. 
551 et seq.) authorizes agencies to dispense with notice and comment 
procedures for rules when the agency, for ``good cause,'' finds that 
those procedures are ``impracticable, unnecessary, or contrary to the 
public interest.'' Under this section, an agency, upon finding good 
cause, may issue a final rule without providing notice and seeking 
comment prior to issuance. Further, section 553(d) of the APA 
authorizes agencies to make rules effective in less than thirty days, 
upon a finding of good cause.
    The FAA justifies waiving notice and comment prior to adoption of 
this rule because no domestic operators use this product. It is 
unlikely that the FAA will receive any adverse comments or useful 
information about this AD from any U.S. operator. Accordingly, notice 
and opportunity for prior public comment are unnecessary, pursuant to 5 
U.S.C. 553(b). In addition, for the foregoing reason(s), the FAA finds 
that good cause exists pursuant to 5 U.S.C. 553(d) for making this 
amendment effective in less than 30 days.

Regulatory Flexibility Act

    The requirements of the Regulatory Flexibility Act (RFA) do not 
apply when an agency finds good cause pursuant to 5 U.S.C. 553 to adopt 
a rule without prior notice and comment. Because the FAA has determined 
that it has good cause to adopt this rule without prior notice and 
comment, RFA analysis is not required.

Costs of Compliance

    There are no costs of compliance with this AD because there are no 
engines with this type certificate on the U.S. Registry.

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

    This AD will not have federalism implications under Executive Order 
13132. This AD will 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 this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866, and
    (2) Will not affect intrastate aviation in Alaska.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

The Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 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:

2024-20-08 Rolls-Royce Deutschland Ltd & Co KG: Amendment 39-22867; 
Docket No. FAA-2024-2331; Project Identifier MCAI-2024-00169-E.

 (a) Effective Date

    This airworthiness directive (AD) is effectiveNovember 8, 2024.

 (b) Affected ADs

    None.

 (c) Applicability

    This AD applies to Rolls-Royce Deutschland Ltd & Co KG Model 
Trent XWB-97 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 existing 
engine time limits manual (TLM) to introduce new or more restrictive 
instructions and associated thresholds and intervals for life-
limited parts. 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 2024-0065, 
dated March 8, 2024 (EASA AD 2024-0065).

(h) Exceptions to EASA AD 2024-0065

    (1) Where EASA AD 2024-0065 refers to its effective date, this 
AD requires using the effective date of this AD.
    (2) This AD does not require compliance with paragraphs (1), 
(2), (4), and (5) of EASA AD 2024-0065.
    (3) Where paragraph (3) of EASA AD 2024-0065 specifies ``Within 
12 months after the effective date of this AD, revise the approved 
AMP,'' replace that text with ``Within 30 days after the effective 
date of this AD, revise the airworthiness limitation section (ALS) 
of the existing approved engine maintenance or inspection program, 
as applicable.''
    (4) The initial compliance time for performing the tasks 
specified in paragraph (3) of EASA AD 2024-0065 is on or before the 
applicable ``limitations'' and ``associated thresholds'' as 
incorporated by the requirements of paragraph (3) of EASA AD 2024-
0065, or within 30 days after the effective date of this AD, 
whichever occurs later.
    (5) This AD does not adopt the ``Remarks'' paragraph of EASA AD 
2024-0065.

(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 ``Ref. Publications'' section of EASA AD 2024-0065.

(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

[[Page 84806]]

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, AIR-
520 Continued Operational Safety Branch, send it to the attention of 
the person identified in paragraph (k) of this AD and email to: 
<a href="/cdn-cgi/l/email-protection#a6e7ebe9e5e6c0c7c788c1c9d0"><span class="__cf_email__" data-cfemail="bbfaf6f4f8fbdddada95dcd4cd">[email protected]</span></a>.
    (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 Barbara Caufield, 
Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, 
WA 98198; phone: (781) 238-7146; email: <a href="/cdn-cgi/l/email-protection#9ffdfeedfdfeedfeb1fcfeeaf9f6faf3fbdff9fefeb1f8f0e9"><span class="__cf_email__" data-cfemail="3f5d5e4d5d5e4d5e115c5e4a59565a535b7f595e5e11585049">[email protected]</span></a>.

(l) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the material listed in this 
paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this material as applicable to do the actions 
required by this AD, unless the AD specifies otherwise.
    (i) European Union Aviation Safety Agency (EASA) AD 2024-0065, 
dated March 8, 2024.
    (ii) [Reserved]
    (3) For EASA material identified in this AD, contact EASA, 
Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999 
000; email: <a href="/cdn-cgi/l/email-protection#1c5d586f5c797d6f7d3279696e736c7d327969"><span class="__cf_email__" data-cfemail="5f1e1b2c1f3a3e2c3e713a2a2d302f3e713a2a">[email protected]</span></a>; website: easa.europa.eu. You may 
find this EASA AD on the EASA website at ad.easa.europa.eu.
    (4) You may view this material 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 material at the National Archives and 
Records Administration (NARA). For information on the availability 
of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email <a href="/cdn-cgi/l/email-protection#cea8bce0a7a0bdbeabadbaa7a1a08ea0afbcafe0a9a1b8"><span class="__cf_email__" data-cfemail="573125793e3924273234233e3839173936253679303821">[email protected]</span></a>.

    Issued on October 7, 2024.
Peter A. White,
Deputy Director, Integrated Certificate Management Division, Aircraft 
Certification Service.
[FR Doc. 2024-24505 Filed 10-23-24; 8:45 am]
BILLING CODE 4910-13-P


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