Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Previously Held by Rolls-Royce plc) Turbofan Engines, 14880-14883 [2023-04860]
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Federal Register / Vol. 88, No. 47 / Friday, March 10, 2023 / Rules and Regulations
(3) The ‘‘Remarks’’ section of EASA AD
2021–0257 does not apply to this AD.
(i) Provisions for Alternative Actions and
Intervals
After the existing maintenance or
inspection program has been revised as
required by paragraph (g) of this AD, no
alternative actions (e.g., inspections) and
intervals are allowed unless they are
approved as specified in the provisions of the
‘‘Ref. Publications’’ section of EASA AD
2021–0257.
(j) Additional AD Provisions
The following provisions also apply to this
AD.
(1) Alternative Methods of Compliance
(AMOCs): The Manager, International
Validation 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
responsible Flight Standards Office, as
appropriate. If sending information directly
to the International Validation Branch, send
it to the attention of the person identified in
paragraph (k) of this AD. Information may be
emailed to: 9-AVS-AIR-730-AMOC@faa.gov.
Before using any approved AMOC, notify
your appropriate principal inspector, or
lacking a principal inspector, the manager of
the responsible Flight Standards Office.
(2) Contacting the Manufacturer: For any
requirement in this AD to obtain instructions
from a manufacturer, the instructions must
be accomplished using a method approved
by the Manager, International Validation
Branch, FAA; or EASA; or Airbus SAS’s
EASA Design Organization Approval (DOA).
If approved by the DOA, the approval must
include the DOA-authorized signature.
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(k) Additional Information
For more information about this AD,
contact Dan Rodina, Aerospace Engineer,
Large Aircraft Section, International
Validation Branch, FAA, 2200 South 216th
St., Des Moines, WA 98198; telephone 206–
231–3225; email dan.rodina@faa.gov.
(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 this AD specifies otherwise.
(i) European Union Aviation Safety Agency
(EASA) AD 2021–0257, dated November 17,
2021.
(ii) [Reserved]
(3) For EASA AD 2021–0257, contact
EASA, Konrad-Adenauer-Ufer 3, 50668
Cologne, Germany; telephone +49 221 8999
000; email ADs@easa.europa.eu; website
easa.europa.eu. You may find this EASA AD
on the EASA website at ad.easa.europa.eu.
(4) You may view this material at the FAA,
Airworthiness Products Section, Operational
Safety Branch, 2200 South 216th St., Des
Moines, WA. For information on the
availability of this material at the FAA, call
206–231–3195.
VerDate Sep<11>2014
16:14 Mar 09, 2023
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(5) 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
fr.inspection@nara.gov, or go to:
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued on October 20, 2022.
Christina Underwood,
Acting Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
Editorial Note: This document was
received for publication by the Office of the
Federal Register on March 7, 2023.
[FR Doc. 2023–04941 Filed 3–9–23; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2022–1244; Project
Identifier MCAI–2022–00872–E; Amendment
39–22361; AD 2023–04–14]
RIN 2120–AA64
Airworthiness Directives; Rolls-Royce
Deutschland Ltd & Co KG (Type
Certificate Previously Held by RollsRoyce plc) Turbofan Engines
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
The FAA is superseding
Airworthiness Directive (AD) 2020–12–
01, which applied to certain Rolls-Royce
Deutschland Ltd. & Co KG (RRD) Trent
XWB–75, Trent XWB–79, Trent XWB–
79B, and Trent XWB–84 model turbofan
engines. AD 2020–12–01 required initial
and repetitive inspections of the low
pressure compressor (LPC) outlet guide
vane (OGV) outer mount ring assembly
and, depending on the results of the
inspections, possible replacement of the
LPC OGV outer mount ring assembly.
Since the FAA issued AD 2020–12–01,
the FAA determined that these
inspections are also necessary for RRD
Trent XWB–97 model turbofan engines.
This AD was prompted by analysis by
the manufacturer of the LPC OGV
assembly and LPC OGV outer mount
ring assembly which predicted that
when the front engine mount is in the
fail-safe condition, the most highly
stressed LPC OGV assembly has a life
that could be substantially less than one
shop visit interval. This AD requires
initial and repetitive inspections of the
LPC OGV outer mount ring assembly
and, depending on the results of the
inspections, replacement of the LPC
OGV outer mount ring assembly, as
SUMMARY:
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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 April 14,
2023.
The Director of the Federal Register
approved the incorporation by reference
of a certain publication listed in this AD
as of April 14, 2023.
ADDRESSES:
AD Docket: You may examine the AD
docket at regulations.gov under Docket
No. FAA–2022–1244; 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:
• For EASA material that is proposed
for IBR in this final rule, contact EASA,
Konrad-Adenauer-Ufer 3, 50668
Cologne, Germany; phone: +49 221 8999
000; email: ADs@easa.europa.eu;
website: easa.europa.eu. You may find
this material on the EASA website at
ad.easa.europa.eu.
• 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 in the AD
docket at regulations.gov under Docket
No. FAA–2022–1244.
FOR FURTHER INFORMATION CONTACT:
Sungmo Cho, Aviation Safety Engineer,
ECO Branch, FAA, 1200 District
Avenue, Burlington, MA 01803; phone:
(781) 238–7241; email: sungmo.d.cho@
faa.gov.
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to supersede AD 2020–12–01,
Amendment 39–21135 (85 FR 34959,
June 8, 2020) (AD 2020–12–01). AD
2020–12–01 applied to certain RRD
Trent XWB–75, Trent XWB–79, Trent
XWB–79B, and Trent XWB–84 model
turbofan engines. AD 2020–12–01
required initial and repetitive
inspections of the LPC OGV outer
mount ring assembly and, depending on
the results of the inspections, possible
replacement of the OGV outer mount
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Federal Register / Vol. 88, No. 47 / Friday, March 10, 2023 / Rules and Regulations
ring assembly. The FAA issued AD
2020–12–01 to prevent failure of the
front engine mount support structure.
The NPRM published in the Federal
Register on September 30, 2022 (87 FR
59347). The NPRM was prompted by
EASA AD 2022–0129, dated June 30,
2022, issued by EASA, which is the
Technical Agent for the Member States
of the European Union (EASA AD 2022–
0129) (referred to after this as ‘‘the
MCAI’’). The MCAI superseded EASA
AD 2019–0234, dated September 19,
2019 (EASA AD 2019–0234). EASA AD
2019–0234 specified that operators
perform repetitive inspections (on-wing
or in-shop) of the OGV outer mount ring
assembly lug fillet area in accordance
with RRD Alert Non-Modification
Service Bulletin (NMSB) Trent XWB
72–AK188, Initial Issue, dated August
13, 2019. The manufacturer
subsequently revised the NMSB and
determined that the inspections of the
LPC OGV outer mount ring assembly are
also necessary for RRD Trent XWB–97
model turbofan engines. In addition,
manufacturer analysis indicated that the
on-wing inspections, previously
specified in RRD NMSB Trent XWB 72–
AK188, original issue, dated August 13,
2019, could be discontinued, and the
interval of the in-shop inspection could
coincide with a qualified shop visit, as
outlined in RRD NMSB Trent XWB 72–
AK188, Revision 3, dated May 9, 2022.
As a result, EASA issued EASA AD
2022–0129 to discontinue the on-wing
inspections, allow the in-shop
inspection interval to be adjusted, and
expand the applicability to include
Trent XWB–97 model turbofan engines.
You may examine issued EASA AD
2022–0129 in the AD docket at
regulations.gov under Docket No. FAA–
2022–1244.
In the NPRM, the FAA proposed to
require initial and repetitive inspections
of the LPC OGV outer mount ring
assembly and, depending on the results
of the inspections, replacement of the
LPC OGV outer mount ring assembly, as
specified in EASA AD 2022–0129. The
FAA is issuing this AD to prevent
failure of the front engine mount
support structure.
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Discussion of Final Airworthiness
Directive
Comments
The FAA received comments from
three commenters. The commenters
were Air Line Pilots Association,
International (ALPA), Delta Air Lines,
VerDate Sep<11>2014
16:14 Mar 09, 2023
Jkt 259001
Inc, (DAL), and Rolls-Royce, plc. The
following presents the comments
received on the NPRM and the FAA’s
response to each comment.
Support for the NPRM
ALPA supported the NPRM without
change.
Request To Remove Proposed
Paragraph (j), Special Flight Permit
DAL requested that the FAA remove
the Special Flight Permit paragraph, as
proposed in the NPRM. DAL explained
that EASA AD 2022–0129 specifies that
all inspections and corrective actions
occur during a qualified engine shop
visit. DAL stated that an affected engine
cannot be returned to service until all
inspections and corrective actions are
complied with and, therefore, the
special flight permit prohibition
proposed in the NPRM is not necessary.
The FAA agrees and has omitted the
proposed Special Flight Permit
paragraph from this final rule.
Request To Revise References to LPC
OGV Outer Mount Ring Assembly
Rolls-Royce, plc. commented that
both the Background section and
paragraph (e), Unsafe Condition, of the
proposed AD refer to ‘‘the most highly
stressed LPC OGV outer mount ring
assembly.’’ The commenter stated that
both paragraphs should be revised to
instead refer to ‘‘the most highly
stressed LPC Outlet Guide Vane’’ in
order to correct the description of the
affected part that has a life that could be
substantially less than one shop visit.
In response to this comment, the FAA
partially agrees with the request to
correct the description of the affected
part, and has updated this final rule by
changing ‘‘the most highly stressed LPC
OGV outer mount ring assembly’’ to
‘‘the most highly stressed LPC OGV
assembly’’ in paragraph (e), Unsafe
Condition, and in the preamble.
Request To Clarify Service Bulletin for
Trent XWB–97 Model Turbofan Engines
Rolls-Royce, plc. noted that the
proposed AD references RRD Alert
NMSB Trent XWB 72–AK188, Revision
3, dated May 9, 2022, when referring to
inspections of the LPC OGV on Trent
XWB–97 model turbofan engines.
However, Rolls-Royce, plc. stated
inspections of the LPC OGV on Trent
XWB–97 model turbofan engines are
covered in RRD Alert NMSB Trent XWB
72–AK583, Initial Issue, dated May 9,
2022.
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14881
The FAA agrees and has updated the
Actions Since AD 2020–12–01 Was
Issued paragraph of the preamble to
reference RRD Alert NMSB Trent XWB
72–AK583, Initial Issue, dated May 9,
2022, when referencing inspections of
the LPC OGV for Trent XWB–97 model
turbofan engines. The FAA also added
RRD Alert NMSB Trent XWB 72–
AK583, Initial Issue, dated May 9, 2022,
to the Other Related Service Information
paragraph of the preamble.
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, 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 2022–
0129. This EASA AD specifies
instructions for performing fluorescent
penetrant inspections (FPIs) of the LPC
OGV outer mount ring 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 the ADDRESSES section.
Other Related Service Information
The FAA reviewed RRD Alert NMSB
Trent XWB 72–AK188, Revision 3,
dated May 9, 2022, and RRD Alert
NMSB Trent XWB 72–AK583, Initial
Issue, dated May 9, 2022. This service
information specifies procedures for
performing FPIs of the LPC OGV outer
mount ring assembly.
Costs of Compliance
The FAA estimates that this AD
affects 60 engines installed on airplanes
of U.S. Registry.
The FAA estimates the following
costs to comply with this AD:
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Federal Register / Vol. 88, No. 47 / Friday, March 10, 2023 / Rules and Regulations
ESTIMATED COSTS
Action
Labor cost
FPI the LPC OGV outer mount ring assembly
3 work-hours × $85 per hour = $255 .............
The FAA estimates the following
costs to do any necessary repairs or
replacements that would be required
Cost per
product
Parts cost
based on the results of the inspection.
The agency has no way of determining
$0
$255
Cost on U.S.
operators
$15,300
the number of aircraft that might need
these repairs or replacements:
ON-CONDITION COSTS
Action
Labor cost
Repair LPC OGV outer mount ring assembly ..............
Replace the LPC OGV outer mount ring assembly .....
Replace the OGV outer mount ring only ......................
.5 work-hours × $85 per hour = $42.50 .......................
8 work-hours × $85 per hour = $680 ...........................
8 work-hours × $85 per hour = $680 ...........................
Authority for This Rulemaking
List of Subjects in 14 CFR Part 39
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.
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
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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.
VerDate Sep<11>2014
16:14 Mar 09, 2023
Jkt 259001
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
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by:
a. Removing Airworthiness Directive
2020–12–01, Amendment 39–21135 (85
FR 34959, June 8, 2020); and
■ b. Adding the following new
airworthiness directive:
■
■
2023–04–14 Rolls-Royce Deutschland Ltd &
Co KG (Type Certificate previously held
by Rolls Royce plc): Amendment 39–
22361; Docket No. FAA–2022–1244;
Project Identifier MCAI–2022–00872–E.
(a) Effective Date
This airworthiness directive (AD) is
effective April 14, 2023.
Parts cost
$0
2,418,121
894,319
Cost per
product
$42.50
2,418,801
894,999
(d) Subject
Joint Aircraft Service Component (JASC)
Code 7120, Engine Mount Sector.
(e) Unsafe Condition
This AD was prompted by analysis by the
manufacturer of the low-pressure compressor
(LPC) outlet guide vane (OGV) assembly and
LPC OGV outer mount ring assembly. The
analysis predicted that when the front engine
mount is in the fail-safe condition, the most
highly stressed LPC OGV assembly has a life
that could be substantially less than one shop
visit interval. The FAA is issuing this AD to
prevent failure of the front engine mount
support structure. The unsafe condition, if
not addressed, could result in engine
separation, reduced control of the airplane,
and loss of the airplane.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Required Actions
Perform all required actions within the
compliance times specified in, and in
accordance with, EASA AD 2022–0129.
(h) Exceptions to EASA AD 2022–0129
(1) Where EASA AD 2022–0129 requires
compliance from its effective date, this AD
requires using the effective date of this AD.
(2) This AD does not adopt the Remarks
paragraph of EASA AD 2022–0129.
(b) Affected ADs
This AD replaces AD 2020–12–01,
Amendment 39–21135 (85 FR 34959, June 8,
2020) (AD 2020–12–01).
(i) No Reporting Requirement
Although the service information
referenced in EASA AD 2022–0129 specifies
to submit certain information to the
manufacturer, this AD does not include that
requirement.
(c) Applicability
This AD applies to 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 as identified in European
Union Aviation Safety Agency (EASA) AD
2022–0129, dated June 30, 2022. (EASA AD
2022–0129).
(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
§ 39.19. In accordance with § 39.19, send
your request to your principal inspector or
local Flight Standards District Office, as
appropriate. If sending information directly
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Federal Register / Vol. 88, No. 47 / Friday, March 10, 2023 / Rules and Regulations
to the manager of the certification office,
send it to the attention of the person
identified in paragraph (k)(1) of this AD or
email to: ANE-AD-AMOC@faa.gov. 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.
(1) 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: sungmo.d.cho@faa.gov.
(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:
rolls-royce.com/contact-us.aspx. You may
view this 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.
(l) Material Incorporated by Reference
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(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
AD 2022–0129, dated June 30, 2022.
(ii) [Reserved]
(3) For EASA AD 2022–0129, contact
EASA, Konrad-Adenauer-Ufer 3, 50668
Cologne, Germany; phone: +49 221 8999 000;
email: ADs@easa.europa.eu. You may find
this EASA AD on the EASA website at
ad.easa.europa.eu.
(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.
(5) 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
fr.inspection@nara.gov, or go to:
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued on February 17, 2023.
Christina Underwood,
Acting Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2023–04860 Filed 3–9–23; 8:45 am]
BILLING CODE 4910–13–P
16:14 Mar 09, 2023
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2022–0521; Project
Identifier MCAI–2022–00273–T; Amendment
39–22187; AD 2022–20–03]
RIN 2120–AA64
(k) Additional Information
VerDate Sep<11>2014
DEPARTMENT OF TRANSPORTATION
Jkt 259001
Airworthiness Directives; MHI RJ
Aviation ULC (Type Certificate
Previously Held by Bombardier, Inc.)
Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
AGENCY:
The FAA is adopting a new
airworthiness directive (AD) for certain
MHI RJ Aviation ULC Model CL–600–
2C10 (Regional Jet Series 700, 701 &
702); CL–600–2C11 (Regional Jet Series
550); CL–600–2D15 (Regional Jet Series
705); CL–600–2D24 (Regional Jet Series
900); and CL–600–2E25 (Regional Jet
Series 1000) airplanes. This AD was
prompted by laboratory tests that
showed that the oxygen tubes of the
crew oxygen system may be
contaminated with lubricants, as a
result of the manufacturing and cleaning
procedures used. This AD requires
cleaning and flushing the crew oxygen
system. The FAA is issuing this AD to
address the unsafe condition on these
products.
SUMMARY:
This AD is effective April 14,
2023.
The Director of the Federal Register
approved the incorporation by reference
of a certain publication listed in this AD
as of April 14, 2023.
ADDRESSES:
AD Docket: You may examine the AD
docket at regulations.gov under Docket
No. FAA–2022–0521; 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:
• For service information identified
in this final rule, contact MHI RJ
Aviation Group, Customer Response
Center, 3655 Ave. des GrandesTourelles, Suite 110, Boisbriand,
Que´bec J7H 0E2 Canada; North America
DATES:
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14883
toll-free telephone 833–990–7272 or
direct-dial telephone 450–990–7272; fax
514–855–8501; email thd.crj@
mhirj.com; website mhirj.com.
• You may view this service
information at the FAA, Airworthiness
Products Section, Operational Safety
Branch, 2200 South 216th St., Des
Moines, WA. For information on the
availability of this material at the FAA,
call 206–231–3195. It is also available at
regulations.gov under Docket No. FAA–
2022–0521.
FOR FURTHER INFORMATION CONTACT:
Chirayu Gupta, Aerospace Engineer,
Mechanical Systems and Administrative
Services Section, FAA, New York ACO
Branch, 1600 Stewart Avenue, Suite
410, Westbury, NY 11590; telephone
516–228–7300; email 9-avs-nyaco-cos@
faa.gov.
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 MHI RJ Aviation ULC
Model CL–600–2C10 (Regional Jet
Series 700, 701 & 702); CL–600–2C11
(Regional Jet Series 550); CL–600–2D15
(Regional Jet Series 705); CL–600–2D24
(Regional Jet Series 900); and CL–600–
2E25 (Regional Jet Series 1000)
airplanes. The NPRM published in the
Federal Register on May 17, 2022 (87
FR 29841). The NPRM was prompted by
AD CF–2022–06, dated February 28,
2022, issued by Transport Canada Civil
Aviation (TCCA), which is the aviation
authority for Canada (referred to after
this as the MCAI). The MCAI states that
laboratory tests showed that the oxygen
tubes of the crew oxygen system may be
contaminated with lubricants, as a
result of the inadvertent use of a nonconforming aqueous degreasing process
for oxygen line flushing and cleaning
during the manufacturing process. If not
corrected, lubricant remaining in
oxygen lines could lead to a fire within
the oxygen tubes or a health hazard
related to the inhalation of lubricant
fumes through the masks when masks
are in use.
In the NPRM, the FAA proposed to
require cleaning and flushing the crew
oxygen system. The FAA is issuing this
AD to address the contaminated oxygen
tubes of the crew oxygen system, which
could lead to a fire within the oxygen
tubes, or a health hazard related to the
inhalation of lubricant fumes when the
masks are in use.
You may examine the MCAI in the
AD docket at regulations.gov under
Docket No. FAA–2022–0521.
E:\FR\FM\10MRR1.SGM
10MRR1
]]>Agencies
[Federal Register Volume 88, Number 47 (Friday, March 10, 2023)]
[Rules and Regulations]
[Pages 14880-14883]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2023-04860]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2022-1244; Project Identifier MCAI-2022-00872-E;
Amendment 39-22361; AD 2023-04-14]
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.
-----------------------------------------------------------------------
SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2020-12-
01, which applied to certain Rolls-Royce Deutschland Ltd. & Co KG (RRD)
Trent XWB-75, Trent XWB-79, Trent XWB-79B, and Trent XWB-84 model
turbofan engines. AD 2020-12-01 required initial and repetitive
inspections of the low pressure compressor (LPC) outlet guide vane
(OGV) outer mount ring assembly and, depending on the results of the
inspections, possible replacement of the LPC OGV outer mount ring
assembly. Since the FAA issued AD 2020-12-01, the FAA determined that
these inspections are also necessary for RRD Trent XWB-97 model
turbofan engines. This AD was prompted by analysis by the manufacturer
of the LPC OGV assembly and LPC OGV outer mount ring assembly which
predicted that when the front engine mount is in the fail-safe
condition, the most highly stressed LPC OGV assembly has a life that
could be substantially less than one shop visit interval. This AD
requires initial and repetitive inspections of the LPC OGV outer mount
ring assembly and, depending on the results of the inspections,
replacement of the LPC OGV outer mount ring assembly, 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 April 14, 2023.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of April 14,
2023.
ADDRESSES:
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2022-1244; 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:
For EASA material that is proposed for IBR in this final
rule, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany;
phone: +49 221 8999 000; email: [email protected]; website:
easa.europa.eu. You may find this material on the EASA website at
ad.easa.europa.eu.
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 in the
AD docket at regulations.gov under Docket No. FAA-2022-1244.
FOR FURTHER INFORMATION CONTACT: Sungmo Cho, Aviation Safety Engineer,
ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone:
(781) 238-7241; email: [email protected].
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 to supersede AD 2020-12-01, Amendment 39-21135 (85 FR
34959, June 8, 2020) (AD 2020-12-01). AD 2020-12-01 applied to certain
RRD Trent XWB-75, Trent XWB-79, Trent XWB-79B, and Trent XWB-84 model
turbofan engines. AD 2020-12-01 required initial and repetitive
inspections of the LPC OGV outer mount ring assembly and, depending on
the results of the inspections, possible replacement of the OGV outer
mount
[[Page 14881]]
ring assembly. The FAA issued AD 2020-12-01 to prevent failure of the
front engine mount support structure.
The NPRM published in the Federal Register on September 30, 2022
(87 FR 59347). The NPRM was prompted by EASA AD 2022-0129, dated June
30, 2022, issued by EASA, which is the Technical Agent for the Member
States of the European Union (EASA AD 2022-0129) (referred to after
this as ``the MCAI''). The MCAI superseded EASA AD 2019-0234, dated
September 19, 2019 (EASA AD 2019-0234). EASA AD 2019-0234 specified
that operators perform repetitive inspections (on-wing or in-shop) of
the OGV outer mount ring assembly lug fillet area in accordance with
RRD Alert Non-Modification Service Bulletin (NMSB) Trent XWB 72-AK188,
Initial Issue, dated August 13, 2019. The manufacturer subsequently
revised the NMSB and determined that the inspections of the LPC OGV
outer mount ring assembly are also necessary for RRD Trent XWB-97 model
turbofan engines. In addition, manufacturer analysis indicated that the
on-wing inspections, previously specified in RRD NMSB Trent XWB 72-
AK188, original issue, dated August 13, 2019, could be discontinued,
and the interval of the in-shop inspection could coincide with a
qualified shop visit, as outlined in RRD NMSB Trent XWB 72-AK188,
Revision 3, dated May 9, 2022. As a result, EASA issued EASA AD 2022-
0129 to discontinue the on-wing inspections, allow the in-shop
inspection interval to be adjusted, and expand the applicability to
include Trent XWB-97 model turbofan engines. You may examine issued
EASA AD 2022-0129 in the AD docket at regulations.gov under Docket No.
FAA-2022-1244.
In the NPRM, the FAA proposed to require initial and repetitive
inspections of the LPC OGV outer mount ring assembly and, depending on
the results of the inspections, replacement of the LPC OGV outer mount
ring assembly, as specified in EASA AD 2022-0129. The FAA is issuing
this AD to prevent failure of the front engine mount support structure.
Discussion of Final Airworthiness Directive
Comments
The FAA received comments from three commenters. The commenters
were Air Line Pilots Association, International (ALPA), Delta Air
Lines, Inc, (DAL), and Rolls-Royce, plc. The following presents the
comments received on the NPRM and the FAA's response to each comment.
Support for the NPRM
ALPA supported the NPRM without change.
Request To Remove Proposed Paragraph (j), Special Flight Permit
DAL requested that the FAA remove the Special Flight Permit
paragraph, as proposed in the NPRM. DAL explained that EASA AD 2022-
0129 specifies that all inspections and corrective actions occur during
a qualified engine shop visit. DAL stated that an affected engine
cannot be returned to service until all inspections and corrective
actions are complied with and, therefore, the special flight permit
prohibition proposed in the NPRM is not necessary.
The FAA agrees and has omitted the proposed Special Flight Permit
paragraph from this final rule.
Request To Revise References to LPC OGV Outer Mount Ring Assembly
Rolls-Royce, plc. commented that both the Background section and
paragraph (e), Unsafe Condition, of the proposed AD refer to ``the most
highly stressed LPC OGV outer mount ring assembly.'' The commenter
stated that both paragraphs should be revised to instead refer to ``the
most highly stressed LPC Outlet Guide Vane'' in order to correct the
description of the affected part that has a life that could be
substantially less than one shop visit.
In response to this comment, the FAA partially agrees with the
request to correct the description of the affected part, and has
updated this final rule by changing ``the most highly stressed LPC OGV
outer mount ring assembly'' to ``the most highly stressed LPC OGV
assembly'' in paragraph (e), Unsafe Condition, and in the preamble.
Request To Clarify Service Bulletin for Trent XWB-97 Model Turbofan
Engines
Rolls-Royce, plc. noted that the proposed AD references RRD Alert
NMSB Trent XWB 72-AK188, Revision 3, dated May 9, 2022, when referring
to inspections of the LPC OGV on Trent XWB-97 model turbofan engines.
However, Rolls-Royce, plc. stated inspections of the LPC OGV on Trent
XWB-97 model turbofan engines are covered in RRD Alert NMSB Trent XWB
72-AK583, Initial Issue, dated May 9, 2022.
The FAA agrees and has updated the Actions Since AD 2020-12-01 Was
Issued paragraph of the preamble to reference RRD Alert NMSB Trent XWB
72-AK583, Initial Issue, dated May 9, 2022, when referencing
inspections of the LPC OGV for Trent XWB-97 model turbofan engines. The
FAA also added RRD Alert NMSB Trent XWB 72-AK583, Initial Issue, dated
May 9, 2022, to the Other Related Service Information paragraph of the
preamble.
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,
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 2022-0129. This EASA AD specifies
instructions for performing fluorescent penetrant inspections (FPIs) of
the LPC OGV outer mount ring 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 the ADDRESSES section.
Other Related Service Information
The FAA reviewed RRD Alert NMSB Trent XWB 72-AK188, Revision 3,
dated May 9, 2022, and RRD Alert NMSB Trent XWB 72-AK583, Initial
Issue, dated May 9, 2022. This service information specifies procedures
for performing FPIs of the LPC OGV outer mount ring assembly.
Costs of Compliance
The FAA estimates that this AD affects 60 engines installed on
airplanes of U.S. Registry.
The FAA estimates the following costs to comply with this AD:
[[Page 14882]]
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
FPI the LPC OGV outer mount ring 3 work-hours x $85 per $0 $255 $15,300
assembly. hour = $255.
----------------------------------------------------------------------------------------------------------------
The FAA estimates the following costs to do any necessary repairs
or replacements that would be required based on the results of the
inspection. The agency has no way of determining the number of aircraft
that might need these repairs or replacements:
On-Condition Costs
----------------------------------------------------------------------------------------------------------------
Cost per
Action Labor cost Parts cost product
----------------------------------------------------------------------------------------------------------------
Repair LPC OGV outer mount ring assembly...... .5 work-hours x $85 per hour = $0 $42.50
$42.50.
Replace the LPC OGV outer mount ring assembly. 8 work-hours x $85 per hour = 2,418,121 2,418,801
$680.
Replace the OGV outer mount ring only......... 8 work-hours x $85 per hour = 894,319 894,999
$680.
----------------------------------------------------------------------------------------------------------------
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:
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 2020-12-01, Amendment 39-21135 (85
FR 34959, June 8, 2020); and
0
b. Adding the following new airworthiness directive:
2023-04-14 Rolls-Royce Deutschland Ltd & Co KG (Type Certificate
previously held by Rolls Royce plc): Amendment 39-22361; Docket No.
FAA-2022-1244; Project Identifier MCAI-2022-00872-E.
(a) Effective Date
This airworthiness directive (AD) is effective April 14, 2023.
(b) Affected ADs
This AD replaces AD 2020-12-01, Amendment 39-21135 (85 FR 34959,
June 8, 2020) (AD 2020-12-01).
(c) Applicability
This AD applies to 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 as identified in European Union
Aviation Safety Agency (EASA) AD 2022-0129, dated June 30, 2022.
(EASA AD 2022-0129).
(d) Subject
Joint Aircraft Service Component (JASC) Code 7120, Engine Mount
Sector.
(e) Unsafe Condition
This AD was prompted by analysis by the manufacturer of the low-
pressure compressor (LPC) outlet guide vane (OGV) assembly and LPC
OGV outer mount ring assembly. The analysis predicted that when the
front engine mount is in the fail-safe condition, the most highly
stressed LPC OGV assembly has a life that could be substantially
less than one shop visit interval. The FAA is issuing this AD to
prevent failure of the front engine mount support structure. The
unsafe condition, if not addressed, could result in engine
separation, reduced control of the airplane, and loss of the
airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
Perform all required actions within the compliance times
specified in, and in accordance with, EASA AD 2022-0129.
(h) Exceptions to EASA AD 2022-0129
(1) Where EASA AD 2022-0129 requires compliance from its
effective date, this AD requires using the effective date of this
AD.
(2) This AD does not adopt the Remarks paragraph of EASA AD
2022-0129.
(i) No Reporting Requirement
Although the service information referenced in EASA AD 2022-0129
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
[[Page 14883]]
to the manager of the certification office, send it to the attention
of the person identified in paragraph (k)(1) of this AD or email to:
[email protected]. 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 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:
[email protected].
(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: rolls-royce.com/contact-us.aspx. You may view this 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.
(l) 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 AD 2022-0129, dated
June 30, 2022.
(ii) [Reserved]
(3) For EASA AD 2022-0129, contact EASA, Konrad-Adenauer-Ufer 3,
50668 Cologne, Germany; phone: +49 221 8999 000; email:
[email protected]. You may find this EASA AD on the EASA website at
ad.easa.europa.eu.
(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.
(5) 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
[email protected], or go to: www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued on February 17, 2023.
Christina Underwood,
Acting Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2023-04860 Filed 3-9-23; 8:45 am]
BILLING CODE 4910-13-P
