Proposed Rule2022-19596
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
September 14, 2022
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to adopt a new airworthiness directive (AD) for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) BR700-710A1-10, BR700-710A2-20, and BR700-710C4-11 model turbofan engines. This proposed AD was prompted by reports of cracks on certain low-pressure compressor (LPC) rotor (fan) disks. This proposed AD would require initial and repetitive visual inspections of certain LPC rotor fan disks and, depending on the results of the inspections, replacement of any LPC rotor fan disk with cracks detected. This proposed AD would also allow 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 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 177 (Wednesday, September 14, 2022)</title>
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[Federal Register Volume 87, Number 177 (Wednesday, September 14, 2022)]
[Proposed Rules]
[Pages 56284-56286]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2022-19596]
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Proposed Rules
Federal Register
________________________________________________________________________
This section of the FEDERAL REGISTER contains notices to the public of
the proposed issuance of rules and regulations. The purpose of these
notices is to give interested persons an opportunity to participate in
the rule making prior to the adoption of the final rules.
========================================================================
Federal Register / Vol. 87, No. 177 / Wednesday, September 14, 2022 /
Proposed Rules
[[Page 56284]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2022-1158; Project Identifier MCAI-2022-00771-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 certain Rolls-Royce Deutschland Ltd & Co KG (RRD) BR700-710A1-10,
BR700-710A2-20, and BR700-710C4-11 model turbofan engines. This
proposed AD was prompted by reports of cracks on certain low-pressure
compressor (LPC) rotor (fan) disks. This proposed AD would require
initial and repetitive visual inspections of certain LPC rotor fan
disks and, depending on the results of the inspections, replacement of
any LPC rotor fan disk with cracks detected. This proposed AD would
also allow 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 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 October 31,
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="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-2022-1158; 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 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#81c0c5f2c1e4e0f2e0afe4f4f3eef1e0afe4f4"><span class="__cf_email__" data-cfemail="aeefeaddeecbcfddcf80cbdbdcc1decf80cbdb">[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: Sungmo Cho, Aviation Safety Engineer,
ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone:
(781) 238-7241; email: <a href="/cdn-cgi/l/email-protection#a8dbddc6cfc5c786cc86cbc0c7e8cec9c986cfc7de"><span class="__cf_email__" data-cfemail="17646279707a78397339747f785771767639707861">[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-2022-1158; Project Identifier
MCAI-2022-00771-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="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
Sungmo Cho, 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 2022-0110, dated June 15, 2022 (EASA
AD 2022-0110), to address an unsafe condition for certain RRD BR700-
710A1-10, BR700-710A2-20, and BR700-710C4-11 model turbofan engines.
The MCAI states that there have been reports of cracks on certain LPC
rotor fan disks. The FAA is proposing this AD to prevent failure of the
LPC rotor fan or blade. This condition, if not addressed, could result
in high energy debris release, damage to the airplane, and reduced
control of the airplane.
You may examine the MCAI in the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2022-1158.
FAA's Determination
This product has been approved by the aviation authority of another
[[Page 56285]]
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 2022-0110. EASA AD 2022-0110 specifies
procedures for initial and repetitive visual inspections of certain LPC
rotor fan disks, and replacement of any LPC rotor fan disk with cracks
detected.
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 RRD BR700 Series Propulsion System Service
Bulletin (SB) SB-BR700-72-101474, Revision 1, dated November 18, 2014
(RRD BR700 Series Propulsion System SB SB-BR700-72-101474); RRD BR700
Series Propulsion System SB SB-BR700-72-101952, Initial Issue, dated
December 1, 2016 (RRD BR700 Series Propulsion System SB SB-BR700-72-
101952); and RRD BR700 Series Propulsion System SB SB-BR700-72-A900732,
Initial Issue, dated June 7, 2022 (RRD BR700 Series Propulsion System
SB SB-BR700-72-A900732).
RRD BR700 Series Propulsion System SB-BR700-72-101474 and RRD BR700
Series Propulsion System SB SB-BR700-72-101952 describe procedures for
the modification of the engine as a terminating action to the initial
and repetitive visual inspections of certain LPC rotor fan disks. RRD
BR700 Series Propulsion System SB SB-BR700-72-A900732 specifies
procedures for initial and repetitive visual inspections of certain LPC
rotor fan disks.
Proposed AD Requirements in This NPRM
This proposed AD would require accomplishing the actions specified
in EASA AD 2022-0110, 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.''
Differences Between This Proposed AD and the EASA AD
Where EASA AD 2022-0110 requires compliance from its effective
date, this proposed AD would require using the effective date of this
AD.
This AD does not require compliance with the ``Remarks'' section of
EASA AD 2022-0110.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 2,068 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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Inspect LPC compressor rotor fan 4 work-hours x $85 per $0 $340 $703,120
disk. hour = $340.
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The FAA estimates the following costs to do any necessary
replacements that would be required based on the results of the
proposed inspection. The agency has no way of determining the number of
aircraft that might need these replacements:
On-Condition Costs
----------------------------------------------------------------------------------------------------------------
Action Labor cost Parts cost Cost per product
----------------------------------------------------------------------------------------------------------------
Replace LPC compressor rotor fan disk 10 work-hours x $85 per $470,000............... $470,850
hour = $850.
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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.
[[Page 56286]]
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-2022-1158; Project
Identifier MCAI-2022-00771-E.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by October 31, 2022.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Rolls-Royce Deutschland Ltd & Co KG (RRD)
BR700-710A1-10, BR700-710A2-20, and BR700-710C4-11 model turbofan
engines as identified in European Union Aviation Safety Agency AD
2022-0110, dated June 15, 2022 (EASA AD 2022-0110).
(d) Subject
Joint Aircraft Service Component (JASC) Code 7230, Turbine
Engine Compressor Section.
(e) Unsafe Condition
This AD was prompted by reports of cracks on certain low-
pressure compressor (LPC) rotor (fan) disks. The FAA is issuing this
AD to prevent failure of the LPC rotor fan or blade. The unsafe
condition, if not addressed, could result in high energy debris
release, damage to the airplane, 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 paragraphs (h) and (i) of this AD:
Perform all required actions within the compliance times specified
in, and in accordance with, EASA AD 2022-0110.
(h) Exceptions to EASA AD 2022-0110
(1) Where EASA AD 2022-0110 requires compliance from its
effective date, this AD requires using the effective date of this
AD.
(2) The ``Remarks'' section of EASA AD 2022-0110 is not
incorporated by reference in this AD.
(i) No Reporting Requirement
Although the service information referenced in EASA AD 2022-0110
specifies to submit certain information to the manufacturer, this AD
does not include that requirement.
(j) Alternative Methods of Compliance (AMOCs)
The Manager, ECO Branch, FAA, has the authority to approve AMOCs
for this AD, if requested using the procedures found in Sec. 39.19.
In accordance with Sec. 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 (k)(2) of this AD or email to: <a href="/cdn-cgi/l/email-protection#81c0cfc4acc0c5acc0cccec2c1e7e0e0afe6eef7"><span class="__cf_email__" data-cfemail="d998979cf4989df49894969a99bfb8b8f7beb6af">[email protected]</span></a>. 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
(1) For service information identified in EASA AD 2022-0110,
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="http://rolls-royce.com/contact-us.aspx">rolls-royce.com/contact-us.aspx</a>.
(2) For more information about this AD, contact Sungmo Cho,
Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue,
Burlington, MA 01803; phone: (781) 238-7241; email:
<a href="/cdn-cgi/l/email-protection#ed9e98838a8082c389c38e8582ad8b8c8cc38a829b"><span class="__cf_email__" data-cfemail="47343229202a28692369242f280721262669202831">[email protected]</span></a>.
(l) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference 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 the AD specifies otherwise.
(i) European Union Aviation Safety Agency AD 2022-0110, dated
June 15, 2022.
(ii) [Reserved]
(3) 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.
(4) You may view this material that is incorporated by reference
at the National Archives and Records Administration (NARA). For
information on the availability of this material at NARA, email:
<a href="/cdn-cgi/l/email-protection#7c1a0e5215120f0c191f081513123c121d0e1d521b130a"><span class="__cf_email__" data-cfemail="89effba7e0e7faf9eceafde0e6e7c9e7e8fbe8a7eee6ff">[email protected]</span></a>, or go to: <a href="http://www.archives.gov/federal-register/cfr/ibr-locations.html">www.archives.gov/federal-register/cfr/ibr-locations.html</a>.
Issued on September 7, 2022.
Christina Underwood,
Acting Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2022-19596 Filed 9-13-22; 8:45 am]
BILLING CODE 4910-13-P
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