Rule2022-26274
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
December 2, 2022
Effective
January 6, 2023
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is adopting 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 AD was prompted by reports of cracks on certain low-pressure compressor (LPC) rotor (fan) disks. This AD requires 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 AD also 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 (IBR). 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 231 (Friday, December 2, 2022)</title>
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[Federal Register Volume 87, Number 231 (Friday, December 2, 2022)]
[Rules and Regulations]
[Pages 73919-73921]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2022-26274]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2022-1158; Project Identifier MCAI-2022-00771-E;
Amendment 39-22246; AD 2022-24-06]
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 adopting 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 AD was
prompted by reports of cracks on certain low-pressure compressor (LPC)
rotor (fan) disks. This AD requires 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 AD also 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 (IBR). The FAA is
issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective January 6, 2023.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of January 6,
2023.
ADDRESSES:
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 final rule, the mandatory continuing airworthiness
information (MCAI), 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.
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#4f0e0b3c0f2a2e3c2e612a3a3d203f2e612a3a"><span class="__cf_email__" data-cfemail="0140457241646072602f6474736e71602f6474">[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. It is also available at
<a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-2022-1158.
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#681b1d060f0507460c460b0007280e0909460f071e"><span class="__cf_email__" data-cfemail="8bf8fee5ece6e4a5efa5e8e3e4cbedeaeaa5ece4fd">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to certain RRD BR700-
710A1-10, BR700-710A2-20, and BR700-710C4-11 model turbofan engines.
The NPRM published in the Federal Register on September 14, 2022 (87 FR
56284). The NPRM was prompted by EASA AD 2022-0110, dated June 15,
2022, issued by EASA, which is the Technical Agent for the Member
States of the European Union (referred to after this as ``the MCAI'').
The MCAI states that there
[[Page 73920]]
have been reports of cracks on certain LPC rotor fan disks.
In the NPRM, the FAA proposed to require accomplishing the actions
specified in EASA AD 2022-0110, described previously, except for any
differences or exceptions identified in the NPRM. The FAA is issuing
this AD to address the unsafe condition on these products.
Discussion of Final Airworthiness Directive
Comments
The FAA received no comments on the NPRM or on the determination of
the costs.
Conclusion
These products 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 this State of Design
Authority, it has notified the FAA of the unsafe condition described in
the MCAI referenced above. The FAA reviewed the relevant data 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, this AD is
adopted as proposed in the NPRM.
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 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 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.
Costs of Compliance
The FAA estimates that this AD affects 2,068 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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Inspect LPC compressor rotor fan disk. 4 work-hours x $85 per $0 $340 $703,120
hour = $340.
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The FAA estimates the following costs to do any necessary
replacements that are required based on the results of the inspection.
The agency has no way of determining the number of aircraft that might
need these replacements:
On-Condition Costs
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Cost per
Action Labor cost Parts cost product
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Replace LPC compressor rotor fan disk......... 10 work-hours x $85 per hour = $470,000 $470,850
$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
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:
[[Page 73921]]
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:
2022-24-06 Rolls-Royce Deutschland Ltd & Co KG (Type Certificate
previously held by Rolls-Royce plc): Amendment 39-22246; Docket No.
FAA-2022-1158; Project Identifier MCAI-2022-00771-E.
(a) Effective Date
This airworthiness directive (AD) is effective January 6, 2023.
(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 does not apply
to 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) of this AD and email to: <a href="/cdn-cgi/l/email-protection#4b0a050e660a0f660a0604080b2d2a2a652c243d"><span class="__cf_email__" data-cfemail="8ccdc2c9a1cdc8a1cdc1c3cfcceaededa2ebe3fa">[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
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#bfcccad1d8d2d091db91dcd7d0ffd9dede91d8d0c9"><span class="__cf_email__" data-cfemail="c5b6b0aba2a8aaeba1eba6adaa85a3a4a4eba2aab3">[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) For EASA AD 2022-0110, contact EASA, Konrad-Adenauer-Ufer 3,
50668 Cologne, Germany; phone: +49 221 8999 000; email:
<a href="/cdn-cgi/l/email-protection#0b4a4f784b6e6a786a256e7e79647b6a256e7e"><span class="__cf_email__" data-cfemail="f3b2b780b396928092dd9686819c8392dd9686">[email protected]</span></a>. You may find this EASA AD on the EASA website at
ad.easa.europa.eu.
(4) You may view this service information at 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.
(5) You may view this service information 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#a7c1d589cec9d4d7c2c4d3cec8c9e7c9c6d5c689c0c8d1"><span class="__cf_email__" data-cfemail="96f0e4b8fff8e5e6f3f5e2fff9f8d6f8f7e4f7b8f1f9e0">[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 November 14, 2022.
Christina Underwood,
Acting Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2022-26274 Filed 12-1-22; 8:45 am]
BILLING CODE 4910-13-P
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