Proposed Rule2024-16517
Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG
Primary source
Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.
Published
July 29, 2024
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to supersede Airworthiness Directive (AD) 2023-24-06, which applies to certain Rolls-Royce Deutschland Ltd & Co KG (RRD) Model Trent 1000 engines. AD 2023-24-06 requires revising the airworthiness limitation section (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. Since the FAA issued AD 2023-24-06, the manufacturer revised the time limits manual (TLM) to introduce new or more restrictive tasks and limitations and associated thresholds and intervals for life-limited parts, which prompted this AD. This proposed AD would require revisions to the ALS of the operator's existing approved engine maintenance or inspection program, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is proposing this AD to address the unsafe condition on these products.
Full Text
<html>
<head>
<title>Federal Register, Volume 89 Issue 145 (Monday, July 29, 2024)</title>
</head>
<body><pre>
[Federal Register Volume 89, Number 145 (Monday, July 29, 2024)]
[Proposed Rules]
[Pages 60841-60844]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2024-16517]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2024-1899; Project Identifier MCAI-2023-01169-E]
RIN 2120-AA64
Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
-----------------------------------------------------------------------
SUMMARY: The FAA proposes to supersede Airworthiness Directive (AD)
2023-24-06, which applies to certain Rolls-Royce Deutschland Ltd & Co
KG (RRD) Model Trent 1000 engines. AD 2023-24-06 requires revising the
airworthiness limitation section (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. Since the
FAA issued AD 2023-24-06, the manufacturer revised the time limits
manual (TLM) to introduce new or more restrictive tasks and limitations
and associated thresholds and intervals for life-limited parts, which
prompted this AD. This proposed AD would require revisions to the ALS
of the operator's existing approved engine maintenance or inspection
program, as specified in a European Union Aviation Safety Agency (EASA)
AD, which is incorporated by reference. The FAA is proposing this AD to
address the unsafe condition on these products.
DATES: The FAA must receive comments on this NPRM by September 12,
2024.
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 <a href="http://regulations.gov">regulations.gov</a>. 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 <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2024-1899; 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:
<bullet> For EASA material identified in this proposed AD, contact
EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221
8999 000; email: <a href="/cdn-cgi/l/email-protection#0a4b4e794a6f6b796b246f7f78657a6b246f7f"><span class="__cf_email__" data-cfemail="a3e2e7d0e3c6c2d0c28dc6d6d1ccd3c28dc6d6">[email protected]</span></a>. 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.
FOR FURTHER INFORMATION CONTACT: Ethan Carlson, Aviation Safety
Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198; phone:
(206) 578-2291; email: <a href="/cdn-cgi/l/email-protection#3b7e4f535a55157615785a49574854557b5d5a5a155c544d"><span class="__cf_email__" data-cfemail="f0b58498919edebddeb391829c839f9eb0969191de979f86">[email protected]</span></a>.
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 the ADDRESSES section. Include ``Docket No. FAA-2024-1899;
Project Identifier MCAI-2023-01169-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
[[Page 60842]]
received, without change, to <a href="http://regulations.gov">regulations.gov</a>, 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 Ethan
Carlson, 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 2023-24-06, Amendment 39-22623 (88 FR 89290,
December 27, 2023) (AD 2023-24-06), for certain 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 engines. AD 2023-24-06
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
2023-0115, dated June 7, 2023 (EASA AD 2023-0115), to correct an unsafe
condition identified as the manufacturer revising the engine TLM life
limits of certain critical rotating parts and direct accumulation
counting data files.
AD 2023-24-06 requires revisions to the ALS of the operator's
existing approved engine maintenance or inspection program. The FAA
issued AD 2023-24-06 to prevent the failure of critical rotating parts.
Actions Since AD 2023-24-06 Was Issued
Since the FAA issued AD 2023-24-06, EASA superseded EASA AD 2023-
0115 and issued EASA AD 2023-0195, dated November 9, 2023 (EASA AD
2023-0195) (also referred to as the MCAI). 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 introducing a new low-pressure compressor blade
part number (P/N) in the list of other mandatory inspections in
Revision 27, changing the special tool from UT2100/4 to UT2100/5 in
Revision 28, and introducing an overhaul limit for P/N KH28129 and P/N
KH28131 standards of intermediate pressure compressor stages 1 and 2
rotor blades in Revision 29.
You may examine the MCAI in the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2024-1899.
Material Incorporated by Reference Under 1 CFR Part 51
The FAA reviewed EASA AD 2023-0195, 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 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 retain none of the requirements of AD 2023-
24-06. This proposed AD would require accomplishing the actions
specified in the MCAI described previously, 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 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 2023-0195
in the FAA final rule. This proposed AD would, therefore, require
compliance with EASA AD 2023-0195 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 the
compliance times,'' compliance with this AD requirement is not limited
to the section titled ``Required Action(s) and Compliance Time(s)'' in
EASA AD 2023-0195. Service information required by the EASA AD for
compliance will be available at <a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-
2024-1899 after the FAA final rule is published.
Differences Between This Proposed AD and the MCAI
Where EASA AD 2023-0195 specifies revising the approved aircraft
maintenance programme (AMP) within 12 months after the effective date
of EASA AD 2023-0195, this proposed 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.
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 60843]]
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
Revise the ALS...................... 1 work-hours 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 2023-24-06, Amendment 39-22623 (88
FR 89290, December 27, 2023); and
0
b. Adding the following new airworthiness directive:
Rolls-Royce Deutschland Ltd & Co KG: Docket No. FAA-2024-1899;
Project Identifier MCAI-2023-01169-E.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by September 12, 2024.
(b) Affected ADs
This AD replaces AD 2023-24-06, Amendment 39-22623 (88 FR 89290,
December 27, 2023).
(c) Applicability
This AD applies to Rolls-Royce Deutschland Ltd & Co KG (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 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) required maintenance and inspections. The
FAA is issuing this AD to prevent the failure of 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
2023-0195, dated November 9, 2023 (EASA AD 2023-0195).
(h) Exceptions to EASA AD 2023-0195
(1) Where EASA AD 2023-0195 refers to its effective date, this
AD requires using the effective date of this AD.
(2) This AD does not require compliance with paragraph (1), (2),
and (4) of EASA AD 2023-0195.
(3) Where paragraph (3) of EASA AD 2023-0195 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) This AD does not adopt the ``Remarks'' paragraph of EASA AD
2023-0195.
(i) Provisions for Alternative Actions and Intervals
No alternative actions and associated thresholds and intervals,
including life limits, are allowed for compliance with paragraph (g)
of this AD unless they are approved as specified in the provisions
of the ``Ref. Publications'' section of EASA AD 2023-0195.
(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, 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#f8b9b5b7bbb89e9999d69f978e"><span class="__cf_email__" data-cfemail="0f4e42404c4f696e6e21686079">[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 Ethan Carlson,
Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines,
WA 98198; phone: (206) 578-2291; email: <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="9cf9e8f4fdf2b2f1b2fffdeef0eff3f2dcfafdfdb2fbf3ea">[email protected]</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 2023-0195,
dated November 9, 2023.
(ii) [Reserved]
[[Page 60844]]
(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#99d8ddead9fcf8eaf8b7fcecebf6e9f8b7fcec"><span class="__cf_email__" data-cfemail="f4b5b087b491958795da9181869b8495da9181">[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 <a href="http://www.archives.gov/federal-register/cfr/ibr-locations">www.archives.gov/federal-register/cfr/ibr-locations</a> or email <a href="/cdn-cgi/l/email-protection#3355411d5a5d40435650475a5c5d735d5241521d545c45"><span class="__cf_email__" data-cfemail="3f594d1156514c4f5a5c4b5650517f515e4d5e11585049">[email protected]</span></a>.
Issued on July 23, 2024.
Peter A. White,
Deputy Director, Integrated Certificate Management Division, Aircraft
Certification Service.
[FR Doc. 2024-16517 Filed 7-26-24; 8:45 am]
BILLING CODE 4910-13-P
</pre><script data-cfasync="false" src="/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js"></script></body>
</html>Indexed from Federal Register on July 29, 2024.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.