Proposed Rule2022-06409
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
March 28, 2022
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to supersede Airworthiness Directive (AD) 2021-15-01, which applies to all Rolls-Royce Deutschland Ltd & Co KG (RRD) Trent XWB-75, Trent XWB-79, Trent XWB-79B, Trent XWB-84, and Trent XWB-97 model turbofan engines. AD 2021-15-01 requires revisions to the airworthiness limitations section (ALS) of the Rolls-Royce (RR) Trent XWB time limits manual (TLM) and the operator's existing approved aircraft maintenance program (AMP). Since the FAA issued AD 2021-15-01, the manufacturer has revised the TLM life limits and updated mandatory inspection intervals of certain critical rotating parts. This proposed AD would require revisions to the ALS of the RR Trent XWB TLM and the operator's existing approved AMP, 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 87 Issue 59 (Monday, March 28, 2022)</title>
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[Federal Register Volume 87, Number 59 (Monday, March 28, 2022)]
[Proposed Rules]
[Pages 17209-17211]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2022-06409]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2022-0296; Project Identifier MCAI-2021-01064-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 supersede Airworthiness Directive (AD)
2021-15-01, which applies to all Rolls-Royce Deutschland Ltd & Co KG
(RRD) Trent XWB-75, Trent XWB-79, Trent XWB-79B, Trent XWB-84, and
Trent XWB-97 model turbofan engines. AD 2021-15-01 requires revisions
to the airworthiness limitations section (ALS) of the Rolls-Royce (RR)
Trent XWB time limits manual (TLM) and the operator's existing approved
aircraft maintenance program (AMP). Since the FAA issued AD 2021-15-01,
the manufacturer has revised the TLM life limits and updated mandatory
inspection intervals of certain critical rotating parts. This proposed
AD would require revisions to the ALS of the RR Trent XWB TLM and the
operator's existing approved AMP, 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 May 12,
2022.
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#29686d5a694c485a48074c5c5b465948074c5c"><span class="__cf_email__" data-cfemail="aaebeed9eacfcbd9cb84cfdfd8c5dacb84cfdf">[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 (817) 222-5110. It is
also available at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching for and
locating Docket No. FAA-2022-0296. For the material identified in this
AD that is not incorporated by reference, 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>.
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-2022-0296; or in person at
Docket Operations between 9 a.m. and 5 p.m., Monday through Friday,
except Federal holidays. The AD docket contains this NPRM, the EASA AD,
any comments received, and other information. The street address for
Docket Operations is listed above.
FOR FURTHER INFORMATION CONTACT: Nicholas Paine, Aviation Safety
Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803;
phone: (781) 238-7116; email: <a href="/cdn-cgi/l/email-protection#a3cdcac0cbcccfc2d08dc98dd3c2cacdc6e3c5c2c28dc4ccd5"><span class="__cf_email__" data-cfemail="3a5453595255565b491450144a5b53545f7a5c5b5b145d554c">[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-2022-0296; Project Identifier
MCAI-2021-01064-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 we receive about this proposed AD.
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
Nicholas Paine, Aviation Safety Engineer, ECO Branch, FAA, 1200
District Avenue, Burlington, MA 01803. Any commentary that the FAA
receives which is not specifically designated as CBI will be placed in
the public docket for this rulemaking.
Background
The FAA issued AD 2021-15-01, Amendment 39-21648 (86 FR 36487, July
12, 2021) (AD 2021-15-01), for all RRD Trent XWB-75, Trent XWB-79,
Trent XWB-79B, Trent XWB-84, and Trent XWB-97 model turbofan engines.
AD 2021-15-01 was prompted by the manufacturer revising the TLM to
incorporate repairs to the low-pressure compressor (LPC) blades and
introduce a new fan blade inspection. AD 2021-15-01 requires revisions
to the ALS of the RR Trent XWB TLM and the operator's existing approved
AMP. The agency issued AD 2021-15-01 to prevent the failure of critical
rotating parts.
Actions Since AD 2021-15-01 Was Issued
Since the FAA issued AD 2021-15-10, EASA, which is the Technical
Agent for the Member States of the European Union, has issued EASA AD
2021-0217, dated September 23, 2021 (EASA AD 2021-0217), to address an
unsafe condition for all RRD Trent XWB-75, Trent XWB-79, Trent XWB-79B,
Trent XWB-84, and Trent XWB-97 model turbofan engines.
This proposed AD was prompted by the manufacturer revising the TLM
to introduce new instructions for repairs to the LPC blades and fan
blade inspections. The FAA is proposing this AD to prevent the failure
of critical rotating parts. This condition, if not addressed, could
result in failure of one
[[Page 17210]]
or more engines, loss of thrust control, and loss of the airplane. See
EASA AD 2021-0217 for additional background information.
FAA's Determination
This product has been approved by the aviation authority of another
country, and is 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 of the unsafe condition described in the EASA
AD. The FAA is issuing this AD after determining that the unsafe
condition described previously is likely to exist or develop in other
products of the same type design.
Related Service Information Under 1 CFR Part 51
The FAA reviewed EASA AD 2021-0217. EASA AD 2021-0217 describes
actions for the incorporation of revised life limits and updated
mandatory inspection intervals of certain critical rotating parts into
the ALS of the RR Trent XWB TLM, as applicable to each engine model,
and the operator's existing approved AMP. 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 Rolls-Royce Airworthiness Limitations (Mandatory
parts lives), TRENTXWB-A-05-10-01-00A01-030A-D, Revision 016, dated May
1, 2021, of the Rolls-Royce Trent XWB TLM TRENTXWB-K0680-TIME0-01;
Rolls-Royce Airworthiness Limitations (Mandatory Parts Lives),
TRENTXWB-B-05-10-01-00A01-030A-D, Revision 003, dated April 19, 2021,
of the Rolls-Royce Trent XWB TLM TRENTXWB-K0680-TIME0-01; Rolls-Royce
Airworthiness Limitations (Mandatory inspections), TRENTXWB-A-05-20-01-
00A01-030A-D, Revision 015, dated May 1, 2021, of the Rolls-Royce Trent
XWB TLM TRENTXWB-K0680-TIME0-01; and Rolls-Royce Airworthiness
Limitations (Mandatory inspections), TRENTXWB-B-05-20-01-00A01-030A-D,
Revision 008, dated April 19, 2021, of the Rolls-Royce Trent XWB TLM
TRENTXWB-K0680-TIME0-01. These sections of the TLM specify inspection
intervals and life limits, differentiated by engine model, for critical
rotating parts.
Proposed AD Requirements in This NPRM
This proposed AD would require accomplishing the actions specified
in EASA AD 2021-0217, described previously, as incorporated by
reference, except for any differences identified as exceptions in the
regulatory text of this proposed 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, the FAA proposes to incorporate by reference EASA AD 2021-0217
in the FAA final rule. Service information required by the EASA AD for
compliance will be available at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by
searching for and locating Docket No. FAA-2022-0296 after the FAA final
rule is published.
Differences Between This Proposed AD and the EASA AD
Definitions
Where EASA AD 2021-0217 defines the AMP as the approved Aircraft
Maintenance Programme on the basis of which the operator or the owner
ensures the continuing airworthiness of each operated engine, this
proposed AD defines the AMP as the Aircraft Maintenance Program on the
basis of which the operator or the owner ensures the continuing
airworthiness of each operated airplane.
Compliance
Where EASA AD 2021-0217 requires revising the approved AMP within
12 months after the effective date of EASA AD 2021-0217, this proposed
AD requires revising the approved AMP and ALS within 120 days after the
effective date of this AD.
Mandatory Inspections
This proposed AD does not require compliance with paragraph (1),
Mandatory Inspections and Replacement of Life Limited Parts, of EASA AD
2021-0217.
Corrective Action(s)
This proposed AD does not require compliance with paragraph (2),
Corrective Action(s), of EASA AD 2021-0217.
Credit
This proposed AD does not require compliance with paragraph (4),
Credit, of EASA AD 2021-0217.
Recording AD Compliance
This proposed AD does not require compliance with paragraph (5),
Recording AD Compliance, of EASA AD 2021-0217.
Remarks
This proposed AD does not require compliance with the ``Remarks''
section of EASA AD 2021-0217.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 30 engines installed on airplanes of U.S. registry.
The FAA estimates the following costs to comply with this proposed
AD:
Estimated costs
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
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Revise the ALS of the RR Trent XWB TLM 1 work-hour x $85 per $0 $85 $2,550
and the operator's existing approved hour = $85.
AMP.
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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
[[Page 17211]]
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:
0
a. Removing Airworthiness Directive 2021-15-01, Amendment 39-21648 (86
FR 36487, July 12, 2021); and
0
b. Adding the following new airworthiness directive:
Rolls-Royce Deutschland Ltd & Co KG (Type Certificate previously
held by Rolls-Royce plc): Docket No. FAA-2022-0296; Project
Identifier MCAI-2021-01064-E.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) action by May 12, 2022.
(b) Affected ADs
This AD replaces AD 2021-15-01, Amendment 39-21648 (86 FR 36487,
July 12, 2021).
(c) Applicability
This AD applies to Rolls-Royce Deutschland Ltd & Co KG Trent
XWB-75, Trent XWB-79, Trent XWB-79B, Trent XWB-84, and Trent XWB-97
model turbofan engines.
(d) Subject
Joint Aircraft System Component (JASC) Code 7200, Engine
Turbine/Turboprop.
(e) Unsafe Condition
This AD was prompted by the manufacturer revising the time
limits manual (TLM) to incorporate revised life limits and updated
mandatory inspection intervals of certain critical rotating 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 (EASA) AD
2021-0217.
(h) Exceptions to EASA AD 2021-0217
(1) Where EASA AD 2021-0217 defines the AMP as the approved
Aircraft Maintenance Programme on the basis of which the operator or
the owner ensures the continuing airworthiness of each operated
engine, this AD defines the AMP as the Aircraft Maintenance Program
on the basis of which the operator or the owner ensures the
continuing airworthiness of each operated airplane.
(2) Where EASA AD 2021-0217 requires revising the approved
aircraft maintenance program (AMP) within 12 months after the
effective date of EASA AD 2021-0217, this AD requires revising the
approved AMP and airworthiness limitations section (ALS) within 120
days after the effective date of this AD.
(3) This AD does not require compliance with paragraph (1),
Mandatory Inspections and Replacement of Life Limited Parts, of EASA
AD 2021-0217.
(4) This AD does not require compliance with paragraph (2),
Corrective Action(s), of EASA AD 2021-0217.
(5) This AD does not require compliance with paragraph (4),
Credit, of EASA AD 2021-0217.
(6) This AD does not require compliance with paragraph (5),
Recording AD Compliance, of EASA AD 2021-0217.
(7) This AD does not require compliance with the ``Remarks''
section of EASA AD 2021-0217.
(i) Alternative Methods of Compliance (AMOCs)
(1) The Manager, ECO Branch, FAA, has the authority to approve
AMOCs for this AD, if requested using the procedures found in 14 CFR
39.19. In accordance with 14 CFR 39.19, send your request to your
principal inspector or local Flight Standards District Office, as
appropriate. If sending information directly to the manager of the
certification office, send it to the attention of the person
identified in paragraph (j)(2) of this AD and email to: <a href="/cdn-cgi/l/email-protection#94d5dad1b9d5d0b9d5d9dbd7d4f2f5f5baf3fbe2"><span class="__cf_email__" data-cfemail="ca8b848fe78b8ee78b8785898aacababe4ada5bc">[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 2021-0217, contact EASA,
Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999
000; email: <a href="/cdn-cgi/l/email-protection#5011142310353123317e3525223f20317e3525"><span class="__cf_email__" data-cfemail="95d4d1e6d5f0f4e6f4bbf0e0e7fae5f4bbf0e0">[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
(817) 222-5110. 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-2022-0296.
(2) For more information about this AD, contact Nicholas Paine,
Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue,
Burlington, MA 01803; phone: (781) 238-7116; email:
<a href="/cdn-cgi/l/email-protection#b6d8dfd5ded9dad7c598dc98c6d7dfd8d3f6d0d7d798d1d9c0"><span class="__cf_email__" data-cfemail="5836313b303734392b763276283931363d183e3939763f372e">[email protected]</span></a>.
(3) For 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 referenced 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.
Issued on March 22, 2022.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2022-06409 Filed 3-25-22; 8:45 am]
BILLING CODE 4910-13-P
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