Rule2022-08837
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
April 26, 2022
Effective
May 31, 2022
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is superseding Airworthiness Directive (AD) 2020-20-07 for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) 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, Trent 1000-R3, Trent 7000-72, and Trent 7000-72C model turbofan engines. AD 2020-20-07 required initial and repetitive borescope inspections (BSIs) or visual inspections of the intermediate-pressure compressor (IPC) shaft assembly and, depending on the results of the inspection, replacement of the IPC shaft assembly. This AD was prompted by the manufacturer providing optional terminating actions for the required repetitive inspections and alternative inspection instructions. This AD continues to require initial and repetitive BSIs but allows modification of the engine in accordance with RRD service information as a terminating action to these inspections, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 87 Issue 80 (Tuesday, April 26, 2022)</title>
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[Federal Register Volume 87, Number 80 (Tuesday, April 26, 2022)]
[Rules and Regulations]
[Pages 24407-24410]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2022-08837]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-1164; Project Identifier MCAI-2021-00975-E;
Amendment 39-22019; AD 2022-08-16]
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: Final rule.
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SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2020-20-07
for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) 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, Trent 1000-R3, Trent 7000-72, and Trent
7000-72C model turbofan engines. AD 2020-20-07 required initial and
repetitive borescope inspections (BSIs) or visual inspections of the
intermediate-pressure compressor (IPC) shaft assembly and, depending on
the results of the inspection, replacement of the IPC shaft assembly.
This AD was prompted by the manufacturer providing optional terminating
actions for the required repetitive inspections and alternative
inspection instructions. This AD continues to require initial and
repetitive BSIs but allows modification of the engine in accordance
with RRD service information as a terminating action to these
inspections, as specified in a European Union Aviation Safety Agency
(EASA) AD, which is incorporated by reference. The FAA is issuing this
AD to address the unsafe condition on these products.
DATES: This AD is effective May 31, 2022.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of May 31,
2022.
ADDRESSES: For material incorporated by reference 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#c58481b685a0a4b6a4eba0b0b7aab5a4eba0b0"><span class="__cf_email__" data-cfemail="d69792a596b3b7a5b7f8b3a3a4b9a6b7f8b3a3">[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-2021-1164.
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-2021-1164; 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
EASA AD, any comments received, and other information. The address for
Docket Operations is U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
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#056b6c666d6a6964762b6f2b75646c6b60456364642b626a73"><span class="__cf_email__" data-cfemail="3957505a515655584a175317495850575c795f5858175e564f">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Background
EASA, which is the Technical Agent for the Member States of the
European Union, has issued EASA AD 2019-0282R1, dated August 25, 2021
(EASA AD 2019-0282R1), to address an unsafe condition for all RRD 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, Trent 1000-R3, Trent 7000-72, and
Trent 7000-72C model turbofan engines. The EASA AD includes exceptions
that limit the applicability for certain engines.
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 to supersede AD 2020-20-07, Amendment 39-21263 (85 FR
62975, October 6, 2020), (AD 2020-20-07). AD 2020-20-07 applied to all
RRD 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, Trent 1000-R3, Trent 7000-
72, and Trent 7000-72C model turbofan engines. The NPRM published in
the Federal Register on December 28, 2021 (86 FR 73690). The NPRM was
prompted by a report of crack findings in the front air seal on the IPC
shaft assembly during the stripping of a flight test engine. The NPRM
was also prompted by the manufacturer's publication of service
information that provides optional terminating actions for the required
repetitive inspections and alternative inspection instructions. In the
NPRM, the FAA proposed to continue to require initial and repetitive
BSIs of the IPC shaft assembly. In the NPRM, the FAA also proposed to
require compliance with the required actions from November 10, 2020,
the effective date of AD 2020-20-07. In the NPRM, the FAA also proposed
to allow modification of the engine in accordance with Rolls-Royce
service information as a terminating action to the initial and
repetitive BSIs of the IPC shaft assembly. In the NPRM, the FAA also
proposed to require accomplishing
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the actions specified in EASA AD 2019-0282R1, described previously, as
incorporated by reference, except for any differences identified as
exceptions in the regulatory text of this AD. The FAA is issuing this
AD to address the unsafe condition on these products. See EASA AD 2019-
0282R1 for additional background information.
Discussion of Final Airworthiness Directive
Comments
The FAA received comments from two commenters. The commenters were
Delta Air Lines, Inc. (DAL), and The Boeing Company (Boeing). The
following presents the comments received on the NPRM and the FAA's
response to each comment.
Request To Reevaluate the Need for This FAA AD
DAL requested that the FAA reevaluate the need for the proposed AD.
DAL noted that after EASA revised EASA AD 2019-0282, RRD requested, and
the FAA granted, a global Alternative Methods of Compliance (AMOC) that
includes the changes in EASA AD 2019-0282R1. DAL reasoned that the
regulatory requirements in the proposed NPRM are captured by AD 2020-
20-07 and the global AMOC.
The FAA disagrees with withdrawing the NPRM. Issuing this AD
addresses the unsafe condition, incorporates an optional terminating
action, and incorporates by reference the required actions and
compliance times specified in EASA AD 2019-0282R1. The FAA did not
change the AD as a result of this comment.
Request To Recognize AMOCs Approved for AD 2020-20-07
DAL requested that the FAA update paragraph (i) of this AD to
recognize AMOCs previously approved under AD 2020-20-07. DAL received
an FAA-approved AMOC to AD 2020-20-07 for deviations in the on-wing
inspection procedure, material, and tooling as specified in Rolls-Royce
Trent 1000 Alert NMSB 72-AK451, Initial Issue, dated November 14, 2019.
DAL used this AMOC to comply with AD 2020-20-07 and will need to
continue to use the provisions in this AMOC to comply with this AD. DAL
reasoned that since the AD retains all the requirements of AD 2020-20-
07, AMOCs granted for AD 2020-20-07 should also be applicable to this
AD.
The FAA agrees and has revised paragraph (i) of this AD to include
that AMOCs approved previously for AD 2020-20-07 are approved as AMOCs
for the corresponding provisions of this AD.
Support for the AD
Boeing expressed support for the AD as written.
Conclusion
The FAA reviewed the relevant data, considered the comments
received, and determined that air safety requires adopting this AD as
proposed. Accordingly, the FAA is issuing this AD to address the unsafe
condition on these products. Except for minor editorial changes, and
any other changes described previously, this AD is adopted as proposed
in the NPRM. None of the changes will increase the economic burden on
any operator.
Related Service Information Under 1 CFR Part 51
The FAA reviewed EASA AD 2019-0282R1. EASA AD 2019-0282R1 describes
actions for initial and repetitive BSIs of the IPC shaft assembly. 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 Trent 1000 Alert Non-Modification
Service Bulletin (NMSB) 72-AK451, Revision 1, dated July 15, 2021
(Rolls-Royce Trent 1000 Alert NMSB 72-AK451); Rolls-Royce Trent 1000 SB
72-K570; and Rolls-Royce Trent 1000 SB 72-K571.
Rolls-Royce Trent 1000 Alert NMSB 72-AK451 describes procedures for
initial and repetitive BSIs of the IPC shaft assembly. Rolls-Royce
Trent 1000 SB 72-K570 and Rolls-Royce Trent 1000 SB 72-K571,
differentiated by engine model, describe procedures for the
modification of the engine as a terminating action to the initial and
repetitive BSIs of the IPC shaft assembly.
Costs of Compliance
The FAA estimates that this AD affects 22 engines installed on
airplanes of U.S. Registry.
The FAA estimates the following costs to comply with this AD:
Estimated Costs
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Cost per Cost on U.S.
Action Labor cost Parts cost product operators
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BSI or visual inspection of IPC shaft 3.5 work-hours x $85 per $0 $297.50 $6,545
assembly. hour = $297.50.
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The FAA estimates the following costs to do any necessary
replacement that is required based on the results of the inspection.
The agency has no way of determining the number of aircraft that might
need this replacement:
On-Condition Costs
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Cost per
Action Labor cost Parts cost product
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Replace IPC shaft assembly.................... 1,080 work-hours x $85 per hour $1,365,219 $1,457,019
= $91,800.
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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
[[Page 24409]]
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,
(2) Will not affect intrastate aviation in Alaska, and
(3) Will 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 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:
0
a. Removing Airworthiness Directive 2020-20-07, Amendment 39-21263 (85
FR 62975, October 6, 2020); and
0
b. Adding the following new airworthiness directive:
2022-08-16 Rolls-Royce Deutschland Ltd & Co KG (Type Certificate
previously held by Rolls-Royce plc): Amendment 39-22019; Docket No.
FAA-2021-1164; Project Identifier MCAI-2021-00975-E.
(a) Effective Date
This airworthiness directive (AD) is effective May 31, 2022.
(b) Affected ADs
This AD replaces AD 2020-20-07, Amendment 39-21263 (85 FR 62975,
October 6, 2020) (AD 2020-20-07).
(c) Applicability
This AD applies to Rolls-Royce Deutschland Ltd & Co KG (RRD)
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, Trent 1000-R3, Trent
7000-72, and Trent 7000-72C model turbofan engines installed as
identified in European Union Aviation Safety Agency (EASA) AD 2019-
0282R1, dated August 25, 2021 (EASA AD 2019-0282R1).
(d) Subject
Joint Aircraft Service Component (JASC) Code 7230, Turbine
Engine Compressor Section.
(e) Unsafe Condition
This AD was prompted by a report of crack findings in the front
air seal on the intermediate-pressure compressor (IPC) shaft
assembly during the stripping of a flight test engine. The FAA is
issuing this AD to prevent failure of the IPC shaft assembly. The
unsafe condition, if not addressed, could result in loss of thrust
control and reduced control 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, EASA AD 2019-0282R1.
(h) Exceptions to EASA AD 2019-0282R1
(1) Where EASA AD 2019-0282R1 requires compliance from November
27, 2019, the effective date of EASA AD 2019-0282, this AD requires
compliance from November 10, 2020, the effective date of FAA AD
2020-20-07.
(2) Where EASA AD 2019-0282R1 requires contacting Rolls-Royce
for approved corrective actions if a crack is detected during any
on-wing inspection and in-shop inspection, this AD requires removing
the IPC shaft assembly and replacing it with a part eligible for
installation before further flight.
(3) Where EASA AD 2019-0282R1 defines a serviceable part as an
IPC shaft assembly which is not an affected part; or an affected
part which is new (never previously installed on an engine); or an
affected part that, before (re)installation, has passed (no crack
detected) an inspection in accordance with the instructions of the
NMSB, this AD also includes in that definition an IPC shaft assembly
that, before (re)installation, has passed a visual inspection (no
crack detected) of the exposed part using FAA-approved maintenance
procedures.
(4) Where EASA AD 2019-0282R1 references on-wing inspections,
this AD allows for a visual inspection of the IPC shaft assembly
using FAA-approved maintenance procedures as a substitute for any
on-wing borescope inspection if the affected part is exposed,
provided that the compliance times specified in this AD are not
exceeded.
(5) This AD does not mandate compliance with the ``Remarks''
section of EASA AD 2019-0282R1.
(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)(1) of this AD. Information may be emailed to: <a href="/cdn-cgi/l/email-protection#d3929d96fe9297fe929e9c9093b5b2b2fdb4bca5"><span class="__cf_email__" data-cfemail="276669620a66630a666a68646741464609404851">[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.
(3) AMOCs approved previously for AD 2020-20-07 are approved as
AMOCs for the corresponding provisions of this AD.
(j) Related Information
(1) 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#3f51565c5750535e4c1155114f5e56515a7f595e5e11585049"><span class="__cf_email__" data-cfemail="96f8fff5fef9faf7e5b8fcb8e6f7fff8f3d6f0f7f7b8f1f9e0">[email protected]</span></a>.
(2) For service information 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>. 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.
(k) 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 this AD specifies otherwise.
(i) European Union Aviation Safety Agency (EASA) AD 2019-0282R1,
dated August 25, 2021.
(ii) [Reserved]
(3) For more information about EASA AD 2019-0282R1, contact
EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221
8999 000; email: <a href="/cdn-cgi/l/email-protection#6223261122070311034c0717100d12034c0717"><span class="__cf_email__" data-cfemail="ce8f8abd8eabafbdafe0abbbbca1beafe0abbb">[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>.
(4) 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-2021-1164.
(5) You may view this material that is incorporated by reference
at the National
[[Page 24410]]
Archives and Records Administration (NARA). For information on the
availability of this material at NARA, email <a href="/cdn-cgi/l/email-protection#264054084f4855564345524f4948664847544708414950"><span class="__cf_email__" data-cfemail="3a5c48145354494a5f594e5355547a545b485b145d554c">[email protected]</span></a>,
or go to <a href="https://www.archives.gov/federal-register/cfr/ibr-locations.html">https://www.archives.gov/federal-register/cfr/ibr-locations.html</a>.
Issued on April 8, 2022.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2022-08837 Filed 4-25-22; 8:45 am]
BILLING CODE 4910-13-P
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