Proposed Rule2021-16902
Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Previously Held by Rolls-Royce plc) Turbofan Engines
Primary source
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Published
August 12, 2021
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to adopt a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd. & Co KG (RRD) Trent 7000-72 and Trent 7000-72C 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 updating certain maintenance tasks. The proposed AD would require the operator to revise the airworthiness limitation section (ALS) of their approved 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.
Full Text
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<title>Federal Register, Volume 86 Issue 153 (Thursday, August 12, 2021)</title>
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[Federal Register Volume 86, Number 153 (Thursday, August 12, 2021)]
[Proposed Rules]
[Pages 44316-44319]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2021-16902]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0655; Project Identifier MCAI-2020-01497-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).
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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for all Rolls-Royce Deutschland Ltd. & Co KG (RRD) Trent 7000-72 and
Trent 7000-72C 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 updating certain
maintenance tasks. The proposed AD would require the operator to revise
the airworthiness limitation section (ALS) of their approved
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 September
27, 2021.
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="https://www.regulations.gov">https://www.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.
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: <a href="/cdn-cgi/l/email-protection#8bcacff8cbeeeaf8eaa5eefef9e4fbeaa5eefe"><span class="__cf_email__" data-cfemail="4001043300252133216e2535322f30216e2535">[email protected]</span></a>; website: <a href="https://www.easa.europa.eu">https://www.easa.europa.eu</a>.
You may find this material on the EASA website at <a href="https://ad.easa.europa.eu">https://ad.easa.europa.eu</a>. 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: <a href="https://www.rolls-royce.com/contact-us.aspx">https://www.rolls-royce.com/contact-us.aspx</a>. 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. The EASA material is also available at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching for and locating Docket No. FAA-2021-
0655.
Examining the AD Docket
You may examine the AD docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by
searching for and locating Docket No. FAA-2021-0655; or in person at
Docket Operations between 9 a.m. and 5 p.m.,
[[Page 44317]]
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:
<a href="/cdn-cgi/l/email-protection#29424c5f40470744074a45485b42694f4848074e465f"><span class="__cf_email__" data-cfemail="9ef5fbe8f7f0b0f3b0fdf2ffecf5def8ffffb0f9f1e8">[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 ADDRESSES. Include ``Docket No. FAA-2021-0655; Project Identifier
MCAI-2020-01497-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
<a href="https://www.regulations.gov">https://www.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 Kevin
M. Clark, Aviation Safety Engineer, ECO Branch, FAA, 1200 District
Avenue, Burlington, MA 01803. Any commentary that the FAA receives that
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 2020-0244, dated November 5, 2020
(EASA AD 2020-0244), to correct an unsafe condition on RRD Trent 7000-
72 and Trent 7000-72C 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 2020-0244. EASA AD 2020-0244 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 7000 TLM
T-T7000-1RR, dated July 10, 2020. RR Trent 7000 TLM T-T7000-1RR,
Chapter 05-10, identifies the reduced life limits of certain critical
rotating parts.
The FAA also reviewed Chapter 05-20 of RR Trent 7000 TLM T-T7000-
1RR, dated July 10, 2020. RR Trent 7000 TLM T-T7000-1RR, 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 2020-0244, 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 2020-0244
will be incorporated by reference in the FAA final rule. This proposed
AD would require compliance with EASA AD 2020-0244 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 2020-0244 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 2020-0244. Service information specified in EASA
AD 2020-0244 that is required for compliance with it will be available
at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching for and locating Docket No.
FAA-2021-0655 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-
0244. Where EASA AD 2020-0244 requires compliance from its effective
date, this AD requires using the effective date of this AD. Where EASA
AD 2020-0244 requires revising the AMP within 12 months from its
effective date, this AD requires revising the AMP within 90 days after
the effective date of this AD. This AD does not mandate compliance with
the ``Remarks'' section of EASA AD 2020-0244.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 10 engines installed on airplanes of U.S. Registry.
[[Page 44318]]
The FAA estimates the following costs to comply with this proposed
AD:
Estimated Costs
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Cost per Cost on U.S.
Action Labor cost Parts cost product operators
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Revise the ALS........................ 1 work-hour x $85 per $0 $85 $850
hour = $85.
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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 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-2021-0655; Project
Identifier MCAI-2020-01497-E.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by September 27, 2021.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Rolls-Royce Deutschland Ltd. & Co KG (RRD)
(Type Certificate previously held by Rolls-Royce plc) Trent 7000-72
and Trent 7000-72C model turbofan engines.
(d) Subject
Joint Aircraft Service 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 updating certain maintenance tasks. The FAA is issuing
this AD 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 2020-0244,
dated November 5, 2020 (EASA AD 2020-0244).
(h) Exceptions to EASA AD 2020-0244
(1) The requirements specified in paragraphs (1) and (2) of EASA
AD 2020-0244 are not required by this AD.
(2) Where EASA AD 2020-0244 requires compliance from its
effective date, this AD requires using the effective date of this
AD.
(3) Paragraph (3) of EASA AD 2020-0244 specifies revising the
approved AMP within 12 months after its effective date, but this AD
requires revising the 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 2020-0244.
(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
ECO Branch, send it to the attention of the person identified in
paragraph (j)(2) of this AD. Information may be emailed to: <a href="/cdn-cgi/l/email-protection#e9a8a7acc4a8adc4a8a4a6aaa98f8888c78e869f"><span class="__cf_email__" data-cfemail="f8b9b6bdd5b9bcd5b9b5b7bbb89e9999d69f978e">[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.
(j) Related Information
(1) For more information about EASA AD 2020-0244, contact EASA,
Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999
000; email: <a href="/cdn-cgi/l/email-protection#06474275466367756728637374697667286373"><span class="__cf_email__" data-cfemail="7f3e3b0c3f1a1e0c1e511a0a0d100f1e511a0a">[email protected]</span></a>. You may find this material on the
EASA website at <a href="https://ad.easa.europa.eu">https://ad.easa.europa.eu</a>. 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
<a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching for and locating Docket No.
FAA-2021-0655.
(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: <a href="/cdn-cgi/l/email-protection#85eee0f3ecebabe8abe6e9e4f7eec5e3e4e4abe2eaf3"><span class="__cf_email__" data-cfemail="2d46485b44430340034e414c5f466d4b4c4c034a425b">[email protected]</span></a>.
(3) For RRD 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: <a href="https://www.rolls-royce.com/contact-us.aspx">https://www.rolls-royce.com/contact-us.aspx</a>. 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.
[[Page 44319]]
Issued on August 3, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-16902 Filed 8-11-21; 8:45 am]
BILLING CODE 4910-13-P
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