Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines, 44037-44040 [2023-14596]
Download as PDF
<![CDATA[
Federal Register / Vol. 88, No. 131 / Tuesday, July 11, 2023 / Rules and Regulations
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Placard Installation
Except as specified by paragraph (h) of this
AD: At the applicable time specified in the
‘‘Compliance’’ paragraph of Boeing Special
Attention Requirements Bulletin 767–25–
0589 RB, dated February 25, 2022, do all
applicable actions identified in, and in
ddrumheller on DSK120RN23PROD with RULES1
(j) Alternative Methods of Compliance
(AMOCs)
(1) The Manager, AIR–520 Continued
Operational Safety 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 manager of the certification office,
send it to the attention of the person
identified in paragraph (k) of this AD.
Information may be emailed to: 9-ANMSeattle-ACO-AMOC-Requests@faa.gov.
(2) Before using any approved AMOC,
notify your appropriate principal inspector,
or lacking a principal inspector, the manager
of the responsible Flight Standards Office.
(3) An AMOC that provides an acceptable
level of safety may be used for any repair,
modification, or alteration required by this
AD if it is approved by The Boeing Company
Organization Designation Authorization
(ODA) that has been authorized by the
Manager, AIR–520 Continued Operational
Safety Branch, FAA, to make those findings.
To be approved, the repair method,
modification deviation, or alteration
deviation must meet the certification basis of
the airplane, and the approval must
specifically refer to this AD.
VerDate Sep<11>2014
16:17 Jul 10, 2023
Jkt 259001
accordance with, the Accomplishment
Instructions of Boeing Special Attention
Requirements Bulletin 767–25–0589 RB,
dated February 25, 2022.
Note 1 to paragraph (g): Guidance for
accomplishing the actions required by this
AD can be found in Boeing Special Attention
Service Bulletin 767–25–0589, dated
February 25, 2022, which is referred to in
Boeing Special Attention Requirements
Bulletin 767–25–0589 RB, dated February 25,
2022.
(h) Exception to Service Information
Specifications
Where the Compliance Time column of the
table in the ‘‘Compliance’’ paragraph of
Boeing Special Attention Requirements
Bulletin 767–25–0589 RB, dated February 25,
2022, uses the phrase ‘‘the original issue date
of Requirements Bulletin 767–25–0589 RB,’’
this AD requires using ‘‘the effective date of
this AD.’’
(i) Revision of Existing Airplane Flight
Manual (AFM)
Within 12 months after the effective date
of this AD, revise Section 3.1 of the Normal
Procedures Section of the existing AFM to
include the information in figure 1 to
paragraph (i) of this AD. This may be done
by inserting a copy of figure 1 to paragraph
(i) of this AD into the existing AFM.
Figure 1 to paragraph (i): Flight deck
occupancy (freighter airplane)
(k) Related Information
For more information about this AD,
contact Kumar Khatri, Aviation Safety
Engineer, FAA, 2200 South 216th St., Des
Moines, WA 98198; phone: 206–231–3842;
email: kumar.r.khatri@faa.gov.
National Archives and Records
Administration (NARA). For information on
the availability of this material at NARA,
fr.inspection@nara.gov, or go to:
www.archives.gov/federal-register/cfr/ibrlocations.html.
(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 the AD specifies otherwise.
(i) Boeing Special Attention Requirements
Bulletin 767–25–0589 RB, dated February 25,
2022.
(ii) [Reserved]
(3) For service information identified in
this AD, contact Boeing Commercial
Airplanes, Attention: Contractual & Data
Services (C&DS), 2600 Westminster Blvd.,
MC 110–SK57, Seal Beach, CA 90740–5600;
telephone 562–797–1717; website
myboeingfleet.com.
(4) 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.
(5) You may view this service information
that is incorporated by reference at the
Issued on June 15, 2023.
Michael Linegang,
Acting Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
PO 00000
Frm 00007
Fmt 4700
Sfmt 4700
[FR Doc. 2023–14513 Filed 7–10–23; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2023–0660; Project
Identifier MCAI–2022–01561–E; Amendment
39–22474; AD 2023–12–16]
RIN 2120–AA64
Airworthiness Directives; Rolls-Royce
Deutschland Ltd & Co KG Engines
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
E:\FR\FM\11JYR1.SGM
11JYR1
EN11JY23.000</GPH>
address this condition, which if not
addressed, could result in occupants seated
in the right or center supernumerary seats
sustaining an injury during an emergency
landing.
44037
44038
Federal Register / Vol. 88, No. 131 / Tuesday, July 11, 2023 / Rules and Regulations
The FAA is adopting a new
airworthiness directive (AD) for certain
Rolls-Royce Deutschland Ltd & Co KG
(RRD) Model Trent 1000 engines. This
AD was prompted by reports of
excessive wear on the inner seal fins of
certain high-pressure turbine (HPT)
triple seals. This AD requires an
inspection of the HPT triple seal for
excessive wear and, depending on the
results of the inspection, replacement of
the HPT triple seal and the
intermediate-pressure turbine (IPT)
disk, as specified in a European Union
Aviation Safety Agency (EASA) AD,
which is incorporated by reference. The
FAA is issuing this AD to address the
unsafe condition on these products.
DATES: This AD is effective August 15,
2023.
The Director of the Federal Register
approved the incorporation by reference
of a certain publication listed in this AD
as of August 15, 2023.
ADDRESSES:
AD Docket: You may examine the AD
docket at regulations.gov under Docket
No. FAA–2023–0660; 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 the EASA AD identified in this
final rule, contact EASA, KonradAdenauer-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 EASA AD 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
SUMMARY:
regulations.gov under Docket No. FAA–
2023–0660.
FOR FURTHER INFORMATION CONTACT:
Sungmo Cho, Aviation Safety Engineer,
FAA, 2200 South 216th Street, Des
Moines, WA 98198; 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 by adding an AD that would
apply to certain RRD Model Trent 1000–
AE3, Trent 1000–CE3, Trent 1000–D3,
Trent 1000–G3, Trent 1000–H3, Trent
1000–J3, Trent 1000–K3, Trent 1000–L3,
Trent 1000–M3, Trent 1000–N3, Trent
1000–P3, Trent 1000–Q3, and Trent
1000–R3 engines. The NPRM published
in the Federal Register on April 7, 2023
(88 FR 20782). The NPRM was
prompted by EASA AD 2022–0241,
dated December 7, 2022, issued by
EASA, which is the Technical Agent for
the Member States of the European
Union (EASA AD 2022–0241) (referred
to after this as the MCAI). The MCAI
states that occurrences have been
reported of finding higher than expected
levels of wear on the seal fins of certain
HPT triple seals. The secondary air
system is affected by the resulting
increased turbine cooling air leakage,
which changes the air flow around the
IPT disk. The Modulated Air System
(MAS) was designed to optimize cooling
air flow and intended to be active only
during cruise conditions, but the design
did not account for a high level of seal
wear. Rolls-Royce issued NonModification Service Bulletin Trent
1000 75–AK642, Initial Issue, dated
November 30, 2020, to provide
instructions for MAS deactivation, and
consequently, EASA published EASA
AD 2021–0009, dated January 8, 2021,
specifying deactivation of the MAS
control valves. Despite this, a
significantly worn HPT triple seal under
flight conditions, while MAS was
activated prior to the above action,
could have reduced the safety of flight.
In the NPRM, the FAA proposed to
require accomplishing the actions
specified in EASA AD 2022–0241
described previously, except for any
differences identified as exceptions in
the regulatory text of this AD. The FAA
is issuing this AD to address the unsafe
condition on these products.
You may examine the MCAI in the
AD docket at regulations.gov under
Docket No. FAA–2023–0660.
Discussion of Final Airworthiness
Directive
Comments
The FAA received a comment from
one commenter, The Boeing Company
(Boeing). Boeing supported the NPRM
without change.
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 comment received,
and determined that air safety requires
adopting the 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–
0241. EASA AD 2022–0241 specifies
procedures for inspecting the HPT triple
seal for excessive wear and, depending
on the results of the inspection,
replacing the HPT triple seal and the
IPT disk. 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.
Costs of Compliance
The FAA estimates that this AD
affects 4 engines installed on airplanes
of U.S. registry.
The FAA estimates the following
costs to comply with this AD:
ddrumheller on DSK120RN23PROD with RULES1
ESTIMATED COSTS
Action
Labor cost
Parts cost
Cost per
product
Cost on U.S.
operators
Inspect HPT triple seal ...................................
1 work-hour × $85 per hour = $85 .................
$0
$85
$340
The FAA estimates the following
costs to do any necessary replacements
that would be required based on the
VerDate Sep<11>2014
16:17 Jul 10, 2023
Jkt 259001
results of the inspection. The agency has
no way of determining the number of
PO 00000
Frm 00008
Fmt 4700
Sfmt 4700
aircraft that might need these
replacements:
E:\FR\FM\11JYR1.SGM
11JYR1
Federal Register / Vol. 88, No. 131 / Tuesday, July 11, 2023 / Rules and Regulations
44039
ON-CONDITION COSTS
Action
Labor cost
Parts cost
Cost per
product
Replace HPT triple seal and IPT disk ..........................
4 work-hours × $85 per hour = $340 ...........................
$737,832
$738,172
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.
ddrumheller on DSK120RN23PROD with RULES1
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:
VerDate Sep<11>2014
16:17 Jul 10, 2023
Jkt 259001
(h) Exceptions to EASA AD 2022–0241
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
(i) No Reporting Requirement
[Amended]
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive:
■
2023–12–16 Rolls-Royce Deutschland Ltd &
Co KG: Amendment 39–22474; Docket
No. FAA–2023–0660; Project Identifier
MCAI–2022–01561–E.
(a) Effective Date
This airworthiness directive (AD) is
effective August 15, 2023.
(b) Affected ADs
None.
(c) Applicability
This AD applies to certain Rolls-Royce
Deutschland Ltd & Co KG (RRD) Model Trent
1000–AE3, Trent 1000–CE3, Trent 1000–D3,
Trent 1000–G3, Trent 1000–H3, Trent 1000–
J3, Trent 1000–K3, Trent 1000–L3, Trent
1000–M3, Trent 1000–N3, Trent 1000–P3,
Trent 1000–Q3, and Trent 1000–R3 engines,
as identified in European Union Aviation
Safety Agency (EASA) AD 2022–0241, dated
December 7, 2022 (EASA AD 2022–0241).
(d) Subject
Joint Aircraft System Component (JASC)
Code 7240, Turbine Engine Combustion
Section.
(e) Unsafe Condition
This AD was prompted by reports of
excessive wear on the inner seal fins of
certain high-pressure turbine (HPT) triple
seals. The FAA is issuing this AD to prevent
excessive wear on the inner seal fins of
certain HPT triple seals. The unsafe
condition, if not addressed, could lead to a
temperature increase at the intermediatepressure turbine (IPT) disk rim, possibly
resulting in IPT disk failure and high energy
debris release, with consequent 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–
0241.
PO 00000
Frm 00009
Fmt 4700
(1) Where EASA AD 2022–0241 refers to 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 2022–0241.
Sfmt 4700
Although EASA AD 2022–0241 specifies to
submit inspection results to the
manufacturer, this AD does not include that
requirement.
(j) Alternative Methods of Compliance
(AMOCs)
(1) The Manager, AIR–520, Continued
Operational Safety 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 branch office, send it
to the attention of the person identified in
paragraph (k) of this AD and email to: ANEAD-AMOC@faa.gov.
(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.
(k) Additional Information
For more information about this AD,
contact Sungmo Cho, Aviation Safety
Engineer, FAA, 2200 South 216th Street, Des
Moines, WA 98198; phone: (781) 238–7241;
email: sungmo.d.cho@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 the AD specifies otherwise.
(i) European Union Aviation Safety Agency
AD 2022–0241, dated December 7, 2022.
(ii) [Reserved]
(3) For EASA AD 2022–0241, 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.
(4) 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.
This material may be found in the AD docket
at regulations.gov by searching for and
locating Docket No. FAA–2023–0660.
E:\FR\FM\11JYR1.SGM
11JYR1
44040
Federal Register / Vol. 88, No. 131 / Tuesday, July 11, 2023 / Rules and Regulations
(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: fr.inspection@nara.gov, or go to:
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued on June 13, 2023.
Michael Linegang,
Acting Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2023–14596 Filed 7–10–23; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2023–0437; Project
Identifier MCAI–2022–01358–E; Amendment
39–22480; AD 2023–12–21]
RIN 2120–AA64
Airworthiness Directives; Rolls-Royce
Deutschland Ltd & Co KG Engines
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
The FAA is superseding
Airworthiness Directive (AD) 2021–26–
13, which applied to all Rolls-Royce
Deutschland Ltd & Co KG (RRD) Model
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 engines.
AD 2021–26–13 required revision of the
engine Time Limits Manual (TLM) life
limits of certain critical rotating parts
and direct accumulation counting (DAC)
data files. Since the FAA issued AD
2021–26–13, RRD has revised the TLM
with more restrictive airworthiness
limitations, including updated life
limits for certain critical parts and
updated DAC data files. This AD was
prompted by the manufacturer revising
the engine TLM life limits of certain
critical rotating parts, updating the DAC
data files, and updating certain
maintenance tasks. This AD requires
revising the existing approved
maintenance or inspection program, as
applicable, to incorporate more
restrictive airworthiness limitations, 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 August 15,
2023.
ddrumheller on DSK120RN23PROD with RULES1
SUMMARY:
VerDate Sep<11>2014
16:17 Jul 10, 2023
Jkt 259001
The Director of the Federal Register
approved the incorporation by reference
of a certain publication listed in this AD
as of August 15, 2023.
ADDRESSES:
AD Docket: You may examine the AD
docket at regulations.gov under Docket
No. FAA–2023–0437; 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 EASA, KonradAdenauer-Ufer 3, 50668 Cologne,
Germany; phone: +49 221 8999 000;
email: ADs@easa.europa.eu; website:
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–2023–0437.
FOR FURTHER INFORMATION CONTACT:
Sungmo Cho, Aviation Safety Engineer,
FAA, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; 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 2021–26–13,
Amendment 39–21872 (86 FR 72840,
December 23, 2021), (‘‘AD 2021–26–
13’’). AD 2021–26–13 applied to all RRD
Model 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
engines. AD 2021–26–13 required
operators to update the airworthiness
limitations section (ALS) of their
approved maintenance and inspection
program by incorporating the latest
revision of the engine TLM life limits of
certain critical rotating parts and
updating DAC data files for each
affected model engine. The FAA issued
AD 2021–26–13 to prevent the failure of
critical rotating parts.
The NPRM published in the Federal
Register on March 23, 2023 (88 FR
PO 00000
Frm 00010
Fmt 4700
Sfmt 4700
17426). The NPRM was prompted by
EASA AD 2022–0210, dated October 17,
2022 (referred to after this as ‘‘the
MCAI’’), issued by EASA, which is the
Technical Agent for the Member States
of the European Union. The MCAI states
the manufacturer published a revised
TLM introducing new or more
restrictive tasks and limitations. These
new or more restrictive tasks and
limitations include updating declared
lives of certain critical parts and
updating DAC data files.
You may examine the MCAI in the
AD docket at regulations.gov under
Docket No. FAA–2023–0437.
In the NPRM, the FAA proposed to
require revising the existing approved
maintenance or inspection program, as
applicable, to incorporate more
restrictive airworthiness limitations, as
specified in EASA AD 2022–0210. The
FAA is issuing this AD to address the
unsafe condition on these products.
Discussion of Final Airworthiness
Directive
Comments
The FAA received a comment from
one commenter, The Boeing Company
(Boeing). Boeing supported the NPRM
without change.
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 comment 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, this AD is adopted as proposed
in the NPRM.
Related Service Information Under 1
CFR Part 51
The FAA reviewed EASA AD 2022–
0210. EASA AD 2022–0210 specifies
instructions for accomplishing the
actions specified in the applicable TLM,
including performing maintenance
tasks, replacing life-limited parts, and
revising the existing approved
maintenance or inspection program, as
applicable, by incorporating the
limitations, tasks, and associated
thresholds and intervals described in
the TLM.
This material is reasonably available
because the interested parties have
access to it through their normal course
E:\FR\FM\11JYR1.SGM
11JYR1
]]>Agencies
[Federal Register Volume 88, Number 131 (Tuesday, July 11, 2023)]
[Rules and Regulations]
[Pages 44037-44040]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2023-14596]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2023-0660; Project Identifier MCAI-2022-01561-E;
Amendment 39-22474; AD 2023-12-16]
RIN 2120-AA64
Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG
Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
[[Page 44038]]
SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain Rolls-Royce Deutschland Ltd & Co KG (RRD) Model Trent 1000
engines. This AD was prompted by reports of excessive wear on the inner
seal fins of certain high-pressure turbine (HPT) triple seals. This AD
requires an inspection of the HPT triple seal for excessive wear and,
depending on the results of the inspection, replacement of the HPT
triple seal and the intermediate-pressure turbine (IPT) disk, as
specified in a European Union Aviation Safety Agency (EASA) AD, which
is incorporated by reference. The FAA is issuing this AD to address the
unsafe condition on these products.
DATES: This AD is effective August 15, 2023.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of August 15,
2023.
ADDRESSES:
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2023-0660; 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 the EASA AD identified 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 EASA AD 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
regulations.gov under Docket No. FAA-2023-0660.
FOR FURTHER INFORMATION CONTACT: Sungmo Cho, Aviation Safety Engineer,
FAA, 2200 South 216th Street, Des Moines, WA 98198; 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 by adding an AD that would apply to certain RRD Model Trent
1000-AE3, Trent 1000-CE3, Trent 1000-D3, Trent 1000-G3, Trent 1000-H3,
Trent 1000-J3, Trent 1000-K3, Trent 1000-L3, Trent 1000-M3, Trent 1000-
N3, Trent 1000-P3, Trent 1000-Q3, and Trent 1000-R3 engines. The NPRM
published in the Federal Register on April 7, 2023 (88 FR 20782). The
NPRM was prompted by EASA AD 2022-0241, dated December 7, 2022, issued
by EASA, which is the Technical Agent for the Member States of the
European Union (EASA AD 2022-0241) (referred to after this as the
MCAI). The MCAI states that occurrences have been reported of finding
higher than expected levels of wear on the seal fins of certain HPT
triple seals. The secondary air system is affected by the resulting
increased turbine cooling air leakage, which changes the air flow
around the IPT disk. The Modulated Air System (MAS) was designed to
optimize cooling air flow and intended to be active only during cruise
conditions, but the design did not account for a high level of seal
wear. Rolls-Royce issued Non-Modification Service Bulletin Trent 1000
75-AK642, Initial Issue, dated November 30, 2020, to provide
instructions for MAS deactivation, and consequently, EASA published
EASA AD 2021-0009, dated January 8, 2021, specifying deactivation of
the MAS control valves. Despite this, a significantly worn HPT triple
seal under flight conditions, while MAS was activated prior to the
above action, could have reduced the safety of flight.
In the NPRM, the FAA proposed to require accomplishing the actions
specified in EASA AD 2022-0241 described previously, except for any
differences identified as exceptions in the regulatory text of this AD.
The FAA is issuing this AD to address the unsafe condition on these
products.
You may examine the MCAI in the AD docket at regulations.gov under
Docket No. FAA-2023-0660.
Discussion of Final Airworthiness Directive
Comments
The FAA received a comment from one commenter, The Boeing Company
(Boeing). Boeing supported the NPRM without change.
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 comment received, and determined that air safety
requires adopting the 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 2022-0241. EASA AD 2022-0241 specifies
procedures for inspecting the HPT triple seal for excessive wear and,
depending on the results of the inspection, replacing the HPT triple
seal and the IPT disk. 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.
Costs of Compliance
The FAA estimates that this AD affects 4 engines installed on
airplanes of U.S. registry.
The FAA estimates the following costs to comply with this AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
Inspect HPT triple seal............. 1 work-hour x $85 per $0 $85 $340
hour = $85.
----------------------------------------------------------------------------------------------------------------
The FAA estimates the following costs to do any necessary
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 replacements:
[[Page 44039]]
On-Condition Costs
----------------------------------------------------------------------------------------------------------------
Cost per
Action Labor cost Parts cost product
----------------------------------------------------------------------------------------------------------------
Replace HPT triple seal and IPT disk......... 4 work-hours x $85 per hour = $737,832 $738,172
$340.
----------------------------------------------------------------------------------------------------------------
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 adding the following new airworthiness
directive:
2023-12-16 Rolls-Royce Deutschland Ltd & Co KG: Amendment 39-22474;
Docket No. FAA-2023-0660; Project Identifier MCAI-2022-01561-E.
(a) Effective Date
This airworthiness directive (AD) is effective August 15, 2023.
(b) Affected ADs
None.
(c) Applicability
This AD applies to certain Rolls-Royce Deutschland Ltd & Co KG
(RRD) Model Trent 1000-AE3, Trent 1000-CE3, Trent 1000-D3, Trent
1000-G3, Trent 1000-H3, Trent 1000-J3, Trent 1000-K3, Trent 1000-L3,
Trent 1000-M3, Trent 1000-N3, Trent 1000-P3, Trent 1000-Q3, and
Trent 1000-R3 engines, as identified in European Union Aviation
Safety Agency (EASA) AD 2022-0241, dated December 7, 2022 (EASA AD
2022-0241).
(d) Subject
Joint Aircraft System Component (JASC) Code 7240, Turbine Engine
Combustion Section.
(e) Unsafe Condition
This AD was prompted by reports of excessive wear on the inner
seal fins of certain high-pressure turbine (HPT) triple seals. The
FAA is issuing this AD to prevent excessive wear on the inner seal
fins of certain HPT triple seals. The unsafe condition, if not
addressed, could lead to a temperature increase at the intermediate-
pressure turbine (IPT) disk rim, possibly resulting in IPT disk
failure and high energy debris release, with consequent 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 2022-0241.
(h) Exceptions to EASA AD 2022-0241
(1) Where EASA AD 2022-0241 refers to 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
2022-0241.
(i) No Reporting Requirement
Although EASA AD 2022-0241 specifies to submit inspection
results to the manufacturer, this AD does not include that
requirement.
(j) Alternative Methods of Compliance (AMOCs)
(1) The Manager, AIR-520, Continued Operational Safety 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 branch office, send it to
the attention of the person identified in paragraph (k) of this AD
and email 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.
(k) Additional Information
For more information about this AD, contact Sungmo Cho, Aviation
Safety Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198;
phone: (781) 238-7241; email: [email protected].
(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 2022-0241, dated
December 7, 2022.
(ii) [Reserved]
(3) For EASA AD 2022-0241, 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.
(4) 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. This
material may be found in the AD docket at regulations.gov by
searching for and locating Docket No. FAA-2023-0660.
[[Page 44040]]
(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: [email protected], or go to: www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued on June 13, 2023.
Michael Linegang,
Acting Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2023-14596 Filed 7-10-23; 8:45 am]
BILLING CODE 4910-13-P
