[Federal Register Volume 85, Number 70 (Friday, April 10, 2020)]
[Proposed Rules]
[Pages 20216-20218]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-07450]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2020-0364; Project Identifier MCAI-2019-00119-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 Trent 1000-A2, Trent 1000-
AE2, Trent 1000-C2, Trent 1000-CE2, Trent 1000-D2, Trent 1000-E2, Trent
1000-G2, Trent 1000-H2, Trent 1000-J2, Trent 1000-K2, and Trent 1000-L2
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 direct accumulation counting
(DAC) data files. This proposed AD would require operators to revise
the airworthiness limitation section (ALS) of their approved
maintenance program by incorporating the revised tasks of the
applicable TLM for each affected engine model. 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 26,
2020.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments.
Fax: 202 493 2251.
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.
Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
For service information identified in this NPRM, contact Rolls-
Royce Deutschland Ltd & Co KG, Eschenweg 11, 15827 Blankenfelde-Mahlow,
Germany; phone: +49 (0) 33 708 6 0; email: https://www.rolls-royce.com/contact-us.aspx. You may view this service information at the FAA,
Engine and Propeller Standards Branch, 1200 District Avenue,
Burlington, MA 01803. For information on the availability of this
material at the FAA, call 781-238-7759.
Examining the AD Docket
You may examine the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2020-
0364; 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. Comments will be available in the AD
docket shortly after receipt.
FOR FURTHER INFORMATION CONTACT: Stephen Elwin, Aerospace Engineer, ECO
Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781-
238-7236; fax: 781-238-7199; email: [email protected].
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-2020-0364;
Project Identifier MCAI-2019-00119-E'' at the beginning of your
comments. The FAA specifically invites comments on the overall
regulatory, economic, environmental, and energy aspects of this NPRM.
The FAA will consider all comments received by the closing date and may
amend this NPRM because of those comments.
Except for Confidential Business Information 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
https://www.regulations.gov, including any personal information you
provide. The FAA will also post a report summarizing each substantive
verbal contact received about this NPRM.
Confidential Business Information
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 Stephen Elwin, Aerospace 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.
Discussion
The European Union Aviation Safety Agency (EASA), which is the
Technical Agent for the Member States of the European Community, has
issued EASA AD 2019-0058R1, dated April 2, 2019 (referred to after this
as ``the MCAI''), to address the unsafe condition on these products.
The MCAI states:
[[Page 20217]]
The airworthiness limitations and/or certification maintenance
instructions for certain Trent 1000 engines (also known as `Package
C'), which are approved by EASA, are defined and published in TLM T-
Trent-10RRC. These instructions have been identified as mandatory
for continued airworthiness.
Failure to accomplish these instructions could result in an
unsafe condition.
Rolls-Royce recently revised the TLM, updating declared lives of
certain critical parts and updating Direct Accumulation Counting
(DAC) Data Files.
For the reason described above, this [EASA] AD requires
accomplishment of the actions specified in the TLM. This [EASA] AD
is revised to clarify that only tasks contained in two specific
chapters of Rolls-Royce TLM T-Trent-10RRC are required by this
[EASA] AD.
You may obtain further information by examining the MCAI in the AD
docket on the internet at https://www.regulations.gov by searching for
and locating Docket No. FAA-2020-0364.
Related Service Information Under 1 CFR Part 51
The FAA reviewed Chapter 05-10 of Rolls-Royce (RR) Trent 1000-A2 RR
TLM T-Trent-10RRC, RR Trent 1000-AE2 RR TLM T-Trent-10RRC, RR Trent
1000-C2 RR TLM T-Trent-10RRC, RR Trent 1000-CE2 RR TLM T-Trent-10RRC,
RR Trent 1000-D2 RR TLM T-Trent-10RRC, RR Trent 1000-E2 RR TLM T-Trent-
10RRC, RR Trent 1000-G2 RR TLM T-Trent-10RRC, RR Trent 1000-H2 RR TLM
T-Trent-10RRC, RR Trent 1000-J2 RR TLM T-Trent-10RRC, RR Trent 1000-K2
RR TLM T-Trent-10RRC, and RR Trent 1000-L2 RR TLM T-Trent-10RRC
(referred to after this as ``RR Trent 1000 RR TLM T-Trent-10RRC,
Chapter 05-10''), all dated December 12, 2018 . RR Trent 1000 RR TLM T-
Trent-10RRC, Chapter 05-10, differentiated by engine model, identifies
the reduced life limits of certain critical rotating parts and the
latest DAC data files to include within the DAC life-usage calculator
tool.
The FAA also reviewed Chapter 05-20 of RR Trent 1000-A2 RR TLM T-
Trent-10RRC, RR Trent 1000-AE2 RR TLM T-Trent-10RRC, RR Trent 1000-C2
RR TLM T-Trent-10RRC, RR Trent 1000-CE2 RR TLM T-Trent-10RRC, RR Trent
1000-D2 RR TLM T-Trent-10RRC, RR Trent 1000-E2 RR TLM T-Trent-10RRC, RR
Trent 1000-G2 RR TLM T-Trent-10RRC, RR Trent 1000-H2 RR TLM T-Trent-
10RRC, RR Trent 1000-J2 RR TLM T-Trent-10RRC, RR Trent 1000-K2 RR TLM
T-Trent-10RRC, and RR Trent 1000-L2 RR TLM T-Trent-10RRC (referred to
after this as ``RR Trent 1000 RR TLM T-Trent-10RRC, Chapter 05-20''),
all dated March 1, 2018. RR Trent 1000 RR TLM T-Trent-10RRC, Chapter
05-20, differentiated by engine model, identifies the critical rotating
part inspection thresholds and intervals.
This service information 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
This product has been approved by EASA and is approved for
operation in the United States. Pursuant to our bilateral agreement
with the European Community, EASA has notified us of the unsafe
condition described in the MCAI and service information referenced
above. The FAA is proposing this AD because we evaluated all the
relevant information provided by EASA and determined the unsafe
condition described previously is likely to exist or develop in other
products of the same type design.
Proposed AD Requirements
This proposed AD would require operators to revise the ALS of their
approved maintenance program by incorporating the revised tasks of the
applicable TLM for each affected model turbofan engine.
Costs of Compliance
The FAA estimates that this proposed AD affects 20 engines
installed on airplanes of U.S. registry.
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 TLM........................ 1 work-hour x $85 per $0 $85 $1,700
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) 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 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.
[[Page 20218]]
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive (AD):
Rolls-Royce Deutschland Ltd & Co KG: Docket No. FAA-2020-0364;
Project Identifier MCAI-2019-00119-E.
(a) Comments Due Date
The FAA must receive comments by May 26, 2020.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Rolls-Royce Deutschland Ltd. & Co KG (Type
Certificate previously held by Rolls-Royce plc) Trent 1000-A2, Trent
1000-AE2, Trent 1000-C2, Trent 1000-CE2, Trent 1000-D2, Trent 1000-
E2, Trent 1000-G2, Trent 1000-H2, Trent 1000-J2, Trent 1000-K2, and
Trent 1000-L2 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 engine
Time Limits Manual (TLM) life limits of certain critical rotating
parts and direct accumulation counting (DAC) data files. 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
Within 60 days after the effective date of this AD, revise the
airworthiness limitation section (ALS) of the approved maintenance
program by incorporating:
(1) Task 05-10-01-800-801, ``Critical Part Mandatory Lives,''
from Chapter 05-10 of the applicable Rolls-Royce (RR) Trent 1000 RR
TLM T-Trent-10RRC, dated December 12, 2018, and
(2) Task 05-20-01-800-801, ``Critical Parts Mandatory
Inspections,'' from Chapter 05-20 of the applicable RR Trent 1000 RR
TLM T-Trent-10RRC, dated March 1, 2018.
(h) Definition
(1) For the purpose of this AD, the ``approved maintenance
program'' is defined as the basis for which the operator or the
owner ensures the continuing airworthiness of each operated
airplane.
(2) For the purpose of this AD, the ``applicable RR Trent 1000
RR TLM T-Trent-10RRC'' refers to, depending on the affected model,
the following engine models TLMs:
(i) RR Trent 1000-A2 RR TLM T-Trent-10RRC;
(ii) RR Trent 1000-AE2 RR TLM T-Trent-10RRC;
(iii) RR Trent 1000-C2 RR TLM T-Trent-10RRC;
(iv) RR Trent 1000-CE2 RR TLM T-Trent-10RRC;
(v) RR Trent 1000-D2 RR TLM T-Trent-10RRC;
(vi) RR Trent 1000-E2 RR TLM T-Trent-10RRC;
(vii) RR Trent 1000-G2 RR TLM T-Trent-10RRC;
(viii) RR Trent 1000-H2 RR TLM T-Trent-10RRC;
(ix) RR Trent 1000-J2 RR TLM T-Trent-10RRC;
(x) RR Trent 1000-K2 RR TLM T-Trent-10RRC; or
(xi) RR Trent 1000-L2 RR TLM T-Trent-10RRC.
(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. You may email your request to: [email protected].
(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 this AD, contact Stephen Elwin,
Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue,
Burlington, MA 01803; phone: 781-238-7236; fax: 781-238-7199; email:
[email protected].
(2) Refer to European Union Aviation Safety Agency AD 2019-
0058R1, dated April 2, 2019, for more information. You may examine
the EASA AD in the AD docket on the internet at https://www.regulations.gov by searching for and locating it in Docket No.
FAA-2020-0364.
(3) For service information identified in this AD, contact
Rolls-Royce Deutschland Ltd & Co KG, Eschenweg 11, 15827
Blankenfelde-Mahlow, Germany; phone: +49 (0) 33 708 6 0; email:
https://www.rolls-royce.com/contact-us.aspx. You may view this
referenced service information at the FAA, Engine and Propeller
Standards Branch, 1200 District Avenue, Burlington, MA 01803. For
information on the availability of this material at the FAA, call
781-238-7759.
Issued on April 3, 2020.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2020-07450 Filed 4-9-20; 8:45 am]
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