Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Previously Held by Rolls-Royce plc) Turbofan Engines, 11355-11358 [2022-04276]
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Federal Register / Vol. 87, No. 40 / Tuesday, March 1, 2022 / Proposed Rules
TABLE 14 TO PARAGRAPH (F)(2)—UPDATED MINIMUM EFFICIENCY STANDARDS FOR VARIABLE REFRIGERANT FLOW MULTISPLIT AIR CONDITIONERS AND HEAT PUMPS
Equipment type
Size category
Heating type
VRF Multi-Split Air Conditioners (AirCooled).
≥65,000 and <135,000 Btu/h ..............
≥135,000 and <240,000 Btu/h ............
≥240,000 Btu/h and <760,000 Btu/h ..
≥65,000 and <135,000 Btu/h ..............
All ........................................................
All ........................................................
All ........................................................
Heat Pump without Heat Recovery ....
Heat Pump with Heat Recovery .........
Heat Pump without Heat Recovery ....
Heat Pump with Heat Recovery .........
Heat Pump without Heat Recovery ....
Heat Pump with Heat Recovery .........
Heat Pump without Heat Recovery ....
Heat Pump with Heat Recovery .........
Heat Pump without Heat Recovery ....
Heat Pump with Heat Recovery .........
Heat Pump without Heat Recovery ....
Heat Pump with Heat Recovery .........
Heat Pump without Heat Recovery ....
Heat Pump with Heat Recovery .........
VRF Multi-Split Heat Pumps (AirCooled).
≥135,000 and <240,000 Btu/h ............
≥240,000 Btu/h and <760,000 btu/h ...
VRF Multi-Split Heat Pumps (WaterSource).
<65,000 Btu/h .....................................
≥65,000 and <135,000 Btu/h ..............
≥135,000 and <240,000 Btu/h ............
≥240,000 Btu/h and <760,000 Btu/h ..
[FR Doc. 2022–03836 Filed 2–28–22; 8:45 am]
BILLING CODE 6450–01–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2022–0150; Project
Identifier MCAI–2021–00839–E]
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: Notice of proposed rulemaking
(NPRM).
AGENCY:
The FAA proposes to adopt a
new airworthiness directive (AD) for all
Rolls-Royce Deutschland Ltd. & Co KG
(RRD) Trent 7000–72 and Trent 7000–
72C model turbofan engines. This
proposed AD was prompted by inservice experience showing that certain
high-pressure turbine (HPT) blades may
prematurely deteriorate to an
unacceptable condition when managed
in accordance with the inspection
intervals in the Time Limits Manual
(TLM). This proposed AD would require
initial and repetitive on-wing borescope
inspections (BSIs) of the HPT blades to
detect axial cracking and, depending on
the results of the inspections,
replacement of the HPT blade set, as
specified in a European Union Aviation
Safety Agency (EASA) AD, which is
proposed for incorporation by reference
(IBR). This proposed AD would also
require replacement of the HPT blade
jspears on DSK121TN23PROD with PROPOSALS1
SUMMARY:
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18:06 Feb 28, 2022
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set before exceeding a specified number
of flight cycles. The FAA is proposing
this AD to address the unsafe condition
on these products.
DATES: The FAA must receive comments
on this proposed AD by April 15, 2022.
ADDRESSES: You may send comments,
using the procedures found in 14 CFR
11.43 and 11.45, by any of the following
methods:
• Federal eRulemaking Portal: Go to
https://www.regulations.gov. Follow the
instructions for submitting comments.
• Fax: (202) 493–2251.
• Mail: U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue SE,
Washington, DC 20590.
• Hand Delivery: Deliver to Mail
address above between 9 a.m. and 5
p.m., Monday through Friday, except
Federal holidays.
For material that is proposed for IBR
in this AD, contact EASA, KonradAdenauer-Ufer 3, 50668 Cologne,
Germany; phone: +49 221 8999 000;
email: ADs@easa.europa.eu. You may
find this material on the EASA website
at https://ad.easa.europa.eu. For RollsRoyce service information identified in
this NPRM, 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: https://
www.rolls-royce.com/contact-us.aspx.
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 https://
www.regulations.gov by searching for
and locating Docket No. FAA–2022–
PO 00000
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Minimum efficiency
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IEER.
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COP.
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0150. For the material 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: https://
www.rolls-royce.com/contact-us.aspx.
Examining the AD Docket
You may examine the AD docket at
https://www.regulations.gov by
searching for and locating Docket No.
FAA–2022–0150; or in person at Docket
Operations between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal
holidays. The AD docket contains this
NPRM, the EASA AD, any comments
received, and other information. The
street address for Docket Operations is
listed above.
FOR FURTHER INFORMATION CONTACT:
Nicholas Paine, Aviation Safety
Engineer, ECO Branch, FAA, 1200
District Avenue, Burlington, MA 01803;
phone: (781) 238–7116; email:
nicholas.j.paine@faa.gov.
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any
written relevant data, views, or
arguments about this proposal. Send
your comments to an address listed
under ADDRESSES. Include ‘‘Docket No.
FAA–2022–0150; Project Identifier
MCAI–2021–00839–E’’ at the beginning
of your comments. The most helpful
comments reference a specific portion of
the proposal, explain the reason for any
recommended change, and include
supporting data. The FAA will consider
all comments received by the closing
date and may amend this proposal
because of those comments.
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Except for Confidential Business
Information (CBI) as described in the
following paragraph, and other
information as described in 14 CFR
11.35, the FAA will post all comments
received, without change, to https://
www.regulations.gov, including any
personal information you provide. The
agency will also post a report
summarizing each substantive verbal
contact received about this NPRM.
jspears on DSK121TN23PROD with PROPOSALS1
Confidential Business Information
CBI is commercial or financial
information that is both customarily and
actually treated as private by its owner.
Under the Freedom of Information Act
(FOIA) (5 U.S.C. 552), CBI is exempt
from public disclosure. If your
comments responsive to this NPRM
contain commercial or financial
information that is customarily treated
as private, that you actually treat as
private, and that is relevant or
responsive to this NPRM, it is important
that you clearly designate the submitted
comments as CBI. Please mark each
page of your submission containing CBI
as ‘‘PROPIN.’’ The FAA will treat such
marked submissions as confidential
under the FOIA, and they will not be
placed in the public docket of this
NPRM. Submissions containing CBI
should be sent to Nicholas Paine,
Aviation Safety Engineer, ECO Branch,
FAA, 1200 District Avenue, Burlington,
MA 01803. Any commentary that the
FAA receives that is not specifically
designated as CBI will be placed in the
public docket for this rulemaking.
Background
EASA, which is the Technical Agent
for the Member States of the European
Union, has issued EASA AD 2021–0169,
dated July 19, 2021 (EASA AD 2021–
0169), to address an unsafe condition
for all RRD Trent 7000–72 and Trent
7000–72C model turbofan engines.
This proposed AD was prompted by
in-service experience showing that
certain HPT blades may prematurely
deteriorate to an unacceptable condition
when managed in accordance with the
inspection intervals in the TLM. The
manufacturer has issued Rolls-Royce
(RR) Alert Non-Modification Service
Bulletin (NMSB) Trent 1000 72–AK449,
Revision 2, dated July 5, 2021 (the Alert
NMSB) specifying procedures for
performing initial and repetitive onwing BSIs of the HPT blades to detect
axial cracking. The Alert NMSB also
specifies procedures for removing the
engine from service to replace the HPT
blade set before exceeding a specified
number of flight cycles. The compliance
time for the initial and repetitive BSIs
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18:06 Feb 28, 2022
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of the HPT blades proposed by this AD
meet the TLM inspection intervals for
HPT blade, part number KH64485. The
FAA is proposing this AD to prevent
failure of the HPT blades. This
condition, if not addressed, could result
in failure of the engine, in-flight
shutdown, and loss of the airplane. See
EASA AD 2021–0169 for additional
background information.
FAA’s Determination
This product has been approved by
the aviation authority of another
country, and is approved for operation
in the United States. Pursuant to the
FAA’s bilateral agreement with the State
of Design Authority, the FAA has been
notified about the unsafe condition
described in the EASA AD. The FAA is
issuing this NPRM because the agency
evaluated all the relevant information
provided by EASA and determined the
unsafe condition described previously is
likely to exist or develop in other
products of the same type design.
Related Service Information Under 1
CFR Part 51
The FAA reviewed EASA AD 2021–
0169. EASA AD 2021–0169 specifies
instructions for performing initial and
repetitive on-wing BSIs of the HPT
blades to detect axial cracking and,
depending on the results of the
inspections, removal from service of the
engine for in-shop replacement of the
HPT blade set. EASA AD 2021–0169
also specifies instructions for replacing
HPT blades with a new HPT blade set
before exceeding a specified number of
flight cycles.
This material is reasonably available
because the interested parties have
access to it through their normal course
of business or by the means identified
in ADDRESSES.
Other Related Service Information
The FAA reviewed RR Alert NMSB
Trent 1000 72–AK449, Revision 2, dated
July 5, 2021. This Alert NMSB specifies
procedures for performing initial and
repetitive on-wing BSIs of the HPT
blades to detect axial cracking. The
Alert NMSB also specifies procedures
for removing the engine to replace the
HPT blade set before exceeding a
specified number of flight cycles.
Proposed AD Requirements in This
NPRM
This proposed AD would require
accomplishing the actions specified in
EASA AD 2021–0169, described
previously, as incorporated by
reference, except for any differences
identified as exceptions in the
PO 00000
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Fmt 4702
Sfmt 4702
regulatory text of this proposed AD and
except as discussed under ‘‘Differences
Between this Proposed AD and the
EASA AD.’’
Explanation of Required Compliance
Information
In the FAA’s ongoing efforts to
improve the efficiency of the AD
process, the FAA developed a process to
use some civil aviation authority (CAA)
ADs as the primary source of
information for compliance with
requirements for corresponding FAA
ADs. The FAA has since coordinated
with other manufacturers and CAAs to
use this process. As a result, the FAA
proposes to incorporate by reference
EASA AD 2021–0169 in the FAA final
rule. This proposed AD would,
therefore, require compliance with
EASA AD 2021–0169 in its entirety
through that incorporation, except for
any differences identified as exceptions
in the regulatory text of this proposed
AD. Using common terms that are the
same as the heading of a particular
section in EASA AD 2021–0169 does
not mean that operators need comply
only with that section. For example,
where the AD requirement refers to ‘‘all
required actions and compliance times,’’
compliance with this AD requirement is
not limited to the section titled
‘‘Required Action(s) and Compliance
Time(s)’’ in EASA AD 2021–0169.
Service information specified by EASA
AD 2021–0169 for compliance will be
available at https://www.regulations.gov
by searching for and locating Docket No.
FAA–2022–0150 after the FAA final
rule is published.
Differences Between This Proposed AD
and the EASA AD
Where EASA AD 2021–0169 requires
compliance from its effective date, this
proposed AD would require using the
effective date of this AD. This proposed
AD does not mandate compliance with
the ‘‘Remarks’’ section of EASA AD
2021–0169.
Interim Action
The FAA considers that this proposed
AD would be an interim action. If final
action is later identified, the FAA might
consider additional rulemaking.
Costs of Compliance
The FAA estimates that this AD, if
adopted as proposed, would affect 16
engines installed on airplanes of U.S.
Registry.
The FAA estimates the following
costs to comply with this proposed AD:
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Federal Register / Vol. 87, No. 40 / Tuesday, March 1, 2022 / Proposed Rules
ESTIMATED COSTS
Action
Labor cost
BSI HPT Blades ..............................................
4 work-hours × $85 per hour = $340 .............
The FAA estimates the following
costs to do any necessary replacements
that would be required based on the
Cost per
product
Parts cost
results of the proposed inspection. The
agency has no way of determining the
$0
Cost on U.S.
operators
$340
$5,440
number of aircraft that might need this
replacement:
ON-CONDITION COSTS
Action
Labor cost
Replace HPT Blade Set ...............................................
16 work-hours × $85 per hour = $1,360 ......................
The FAA has included all known
costs in its cost estimate. According to
the manufacturer, however, some of the
costs of this proposed AD may be
covered under warranty, thereby
reducing the cost impact on affected
operators.
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.
jspears on DSK121TN23PROD with PROPOSALS1
Regulatory Findings
The FAA determined that this
proposed AD would not have federalism
implications under Executive Order
13132. This proposed AD would not
have a substantial direct effect on the
States, on the relationship between the
national Government and the States, or
on the distribution of power and
responsibilities among the various
levels of government.
For the reasons discussed above, I
certify this proposed regulation:
(1) Is not a ‘‘significant regulatory action’’
under Executive Order 12866,
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(2) Would not affect intrastate aviation in
Alaska, and
(3) Would not have a significant economic
impact, positive or negative, on a substantial
number of small entities under the criteria of
the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
The Proposed Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA proposes to amend 14 CFR part
39 as follows:
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
[Amended]
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive:
■
Rolls-Royce Deutschland Ltd & Co KG (Type
Certificate previously held by RollsRoyce plc): Docket No. FAA–2022–0150;
Project Identifier MCAI–2021–00839–E.
(a) Comments Due Date
The FAA must receive comments on this
airworthiness directive (AD) by April 15,
2022.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Rolls-Royce
Deutschland Ltd. & Co KG (Type Certificate
previously held by Rolls-Royce plc) Trent
7000–72 and Trent 7000–72C model turbofan
engines.
(d) Subject
Joint Aircraft Service Component (JASC)
Code 7230, Turbine Engine Compressor
Section.
PO 00000
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$2,001,780
Cost per
product
$2,003,140
(e) Unsafe Condition
This AD was prompted by in-service
experience showing that certain highpressure turbine (HPT) blades may
prematurely deteriorate to an unacceptable
condition when managed in accordance with
the inspection intervals defined in the Time
Limits Manual. The FAA is issuing this AD
to prevent failure of the HPT blades. The
unsafe condition, if not addressed, could
result in failure of the engine, in-flight
shutdown, and loss of the airplane.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Required Actions
PART 39—AIRWORTHINESS
DIRECTIVES
§ 39.13
Parts cost
Except as specified in paragraph (h) of this
AD: Perform all required actions within the
compliance times specified in, and in
accordance with, European Union Aviation
Safety Agency AD 2021–0169, dated July 19,
2021 (EASA AD 2021–0169).
(h) Exceptions to EASA AD 2021–0169
(1) Where EASA AD 2021–0169 requires
compliance from its effective date, this
proposed AD would require using the
effective date of this AD.
(2) This AD does not require compliance
with the ‘‘Remarks’’ section of EASA AD
2021–0169.
(i) Alternative Methods of Compliance
(AMOCs)
(1) The Manager, ECO Branch, FAA, has
the authority to approve AMOCs for this AD,
if requested using the procedures found in 14
CFR 39.19. In accordance with 14 CFR 39.19,
send your request to your principal inspector
or local Flight Standards District Office, as
appropriate. If sending information directly
to the manager of the ECO Branch, send it to
the attention of the person identified in
paragraph (j)(2) of this AD and email to:
ANE-AD-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.
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Federal Register / Vol. 87, No. 40 / Tuesday, March 1, 2022 / Proposed Rules
(j) Related Information
(1) For more information about EASA AD
2021–0169, contact EASA, KonradAdenauer-Ufer 3, 50668 Cologne, Germany;
phone: +49 221 8999 000; email: ADs@
easa.europa.eu. You may find this material
on the EASA website at https://
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.
This material may be found in the AD docket
at https://www.regulations.gov by searching
for and locating Docket No. FAA–2022–0150.
(2) For more information about this AD,
contact Nicholas Paine, Aviation Safety
Engineer, ECO Branch, FAA, 1200 District
Avenue, Burlington, MA 01803; phone: (781)
238–7116; email: nicholas.j.paine@faa.gov.
(3) For service information identified in
this AD, 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:
https://www.rolls-royce.com/contact-us.aspx.
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.
Federal Aviation Administration
Transportation, Docket Operations,
West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue SE,
Washington, DC 20590; telephone (202)
366–9826, or (800) 647–5527. You must
identify FAA Docket No. FAA–2022–
0129/Airspace Docket No. 22–AGL–8 at
the beginning of your comments. You
may also submit comments through the
internet at https://www.regulations.gov.
You may review the public docket
containing the proposal, any comments
received, and any final disposition in
person in the Dockets Office between
9:00 a.m. and 5:00 p.m., Monday
through Friday, except federal holidays.
FAA Order JO 7400.11F, Airspace
Designations and Reporting Points, and
subsequent amendments can be viewed
online at https://www.faa.gov/air_
traffic/publications/. For further
information, you can contact the
Airspace Policy Group, Federal Aviation
Administration, 800 Independence
Avenue SW, Washington, DC 20591;
telephone: (202) 267–8783. FAA Order
JO 7400.11 is also available for
inspection at the National Archives and
Records Administration (NARA). For
information on the availability of FAA
Order JO 7400.11F at NARA, email:
fr.inspection@nara.gov or go to https://
www.archives.gov/federal-register/cfr/
ibr-locations.html.
FOR FURTHER INFORMATION CONTACT:
Jeffrey Claypool, Federal Aviation
Administration, Operations Support
Group, Central Service Center, 10101
Hillwood Parkway, Fort Worth, TX
76177; telephone (817) 222–5711.
SUPPLEMENTARY INFORMATION:
14 CFR Part 71
Authority for This Rulemaking
[Docket No. FAA–2022–0129; Airspace
Docket No. 22–AGL–8]
The FAA’s authority to issue rules
regarding aviation safety is found in
Title 49 of the United States Code.
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. This rulemaking is
promulgated under the authority
described in Subtitle VII, part A, subpart
I, Section 40103. Under that section, the
FAA is charged with prescribing
regulations to assign the use of airspace
necessary to ensure the safety of aircraft
and the efficient use of airspace. This
regulation is within the scope of that
authority as it would amend the Class
E airspace extending upward from 700
feet above the surface at Brooks Field,
Marshall, MI, to support instrument
flight rule operations at this airport.
Issued on February 24, 2022.
Lance T. Gant,
Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2022–04276 Filed 2–28–22; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
RIN 2120–AA66
Proposed Amendment of Class E
Airspace; Marshall, MI
Federal Aviation
Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking
(NPRM).
AGENCY:
This action proposes to
amend the Class E airspace at Marshall,
MI. The FAA is proposing this action
due to an airspace review conducted as
part of the decommissioning of the
Litchfield very high frequency (VHF)
omnidirectional range (VOR) as part of
the VOR Minimal Operational Network
(MON) Program.
DATES: Comments must be received on
or before April 15, 2022.
ADDRESSES: Send comments on this
proposal to the U.S. Department of
jspears on DSK121TN23PROD with PROPOSALS1
SUMMARY:
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Comments Invited
Interested parties are invited to
participate in this proposed rulemaking
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by submitting such written data, views,
or arguments, as they may desire.
Comments that provide the factual basis
supporting the views and suggestions
presented are particularly helpful in
developing reasoned regulatory
decisions on the proposal. Comments
are specifically invited on the overall
regulatory, aeronautical, economic,
environmental, and energy-related
aspects of the proposal.
Communications should identify both
docket numbers and be submitted in
triplicate to the address listed above.
Commenters wishing the FAA to
acknowledge receipt of their comments
on this notice must submit with those
comments a self-addressed, stamped
postcard on which the following
statement is made: ‘‘Comments to
Docket No. FAA–2022–0129/Airspace
Docket No. 22–AGL–8.’’ The postcard
will be date/time stamped and returned
to the commenter.
All communications received before
the specified closing date for comments
will be considered before taking action
on the proposed rule. The proposal
contained in this notice may be changed
in light of the comments received. A
report summarizing each substantive
public contact with FAA personnel
concerned with this rulemaking will be
filed in the docket.
Availability of NPRMs
An electronic copy of this document
may be downloaded through the
internet at https://www.regulations.gov.
Recently published rulemaking
documents can also be accessed through
the FAA’s web page at https://
www.faa.gov/air_traffic/publications/
airspace_amendments/.
You may review the public docket
containing the proposal, any comments
received, and any final disposition in
person in the Dockets Office (see the
ADDRESSES section for the address and
phone number) between 9:00 a.m. and
5:00 p.m., Monday through Friday,
except federal holidays. An informal
docket may also be examined during
normal business hours at the Federal
Aviation Administration, Air Traffic
Organization, Central Service Center,
Operations Support Group, 10101
Hillwood Parkway, Fort Worth, TX
76177.
Availability and Summary of
Documents for Incorporation by
Reference
This document proposes to amend
FAA Order JO 7400.11F, Airspace
Designations and Reporting Points,
dated August 10, 2021, and effective
September 15, 2021. FAA Order JO
7400.11F is publicly available as listed
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]]>Agencies
[Federal Register Volume 87, Number 40 (Tuesday, March 1, 2022)]
[Proposed Rules]
[Pages 11355-11358]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-04276]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2022-0150; Project Identifier MCAI-2021-00839-E]
RIN 2120-AA64
Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG
(Type Certificate Previously Held by Rolls-Royce plc) Turbofan Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for all Rolls-Royce Deutschland Ltd. & Co KG (RRD) Trent 7000-72 and
Trent 7000-72C model turbofan engines. This proposed AD was prompted by
in-service experience showing that certain high-pressure turbine (HPT)
blades may prematurely deteriorate to an unacceptable condition when
managed in accordance with the inspection intervals in the Time Limits
Manual (TLM). This proposed AD would require initial and repetitive on-
wing borescope inspections (BSIs) of the HPT blades to detect axial
cracking and, depending on the results of the inspections, replacement
of the HPT blade set, as specified in a European Union Aviation Safety
Agency (EASA) AD, which is proposed for incorporation by reference
(IBR). This proposed AD would also require replacement of the HPT blade
set before exceeding a specified number of flight cycles. The FAA is
proposing this AD to address the unsafe condition on these products.
DATES: The FAA must receive comments on this proposed AD by April 15,
2022.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments.
Fax: (202) 493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
For material that is proposed for IBR in this AD, contact EASA,
Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999
000; email: [email protected]. You may find this material on the EASA
website at https://ad.easa.europa.eu. For Rolls-Royce service
information identified in this NPRM, 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: https://www.rolls-royce.com/contact-us.aspx. 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 https://www.regulations.gov by searching for and
locating Docket No. FAA-2022-0150. For the material 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: https://www.rolls-royce.com/contact-us.aspx.
Examining the AD Docket
You may examine the AD docket at https://www.regulations.gov by
searching for and locating Docket No. FAA-2022-0150; or in person at
Docket Operations between 9 a.m. and 5 p.m., Monday through Friday,
except Federal holidays. The AD docket contains this NPRM, the EASA AD,
any comments received, and other information. The street address for
Docket Operations is listed above.
FOR FURTHER INFORMATION CONTACT: Nicholas Paine, Aviation Safety
Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803;
phone: (781) 238-7116; email: [email protected].
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under ADDRESSES. Include ``Docket No. FAA-2022-0150; Project Identifier
MCAI-2021-00839-E'' at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, explain the
reason for any recommended change, and include supporting data. The FAA
will consider all comments received by the closing date and may amend
this proposal because of those comments.
[[Page 11356]]
Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
https://www.regulations.gov, including any personal information you
provide. The agency will also post a report summarizing each
substantive verbal contact received about this NPRM.
Confidential Business Information
CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this NPRM contain commercial
or financial information that is customarily treated as private, that
you actually treat as private, and that is relevant or responsive to
this NPRM, it is important that you clearly designate the submitted
comments as CBI. Please mark each page of your submission containing
CBI as ``PROPIN.'' The FAA will treat such marked submissions as
confidential under the FOIA, and they will not be placed in the public
docket of this NPRM. Submissions containing CBI should be sent to
Nicholas Paine, Aviation Safety Engineer, ECO Branch, FAA, 1200
District Avenue, Burlington, MA 01803. Any commentary that the FAA
receives that is not specifically designated as CBI will be placed in
the public docket for this rulemaking.
Background
EASA, which is the Technical Agent for the Member States of the
European Union, has issued EASA AD 2021-0169, dated July 19, 2021 (EASA
AD 2021-0169), to address an unsafe condition for all RRD Trent 7000-72
and Trent 7000-72C model turbofan engines.
This proposed AD was prompted by in-service experience showing that
certain HPT blades may prematurely deteriorate to an unacceptable
condition when managed in accordance with the inspection intervals in
the TLM. The manufacturer has issued Rolls-Royce (RR) Alert Non-
Modification Service Bulletin (NMSB) Trent 1000 72-AK449, Revision 2,
dated July 5, 2021 (the Alert NMSB) specifying procedures for
performing initial and repetitive on-wing BSIs of the HPT blades to
detect axial cracking. The Alert NMSB also specifies procedures for
removing the engine from service to replace the HPT blade set before
exceeding a specified number of flight cycles. The compliance time for
the initial and repetitive BSIs of the HPT blades proposed by this AD
meet the TLM inspection intervals for HPT blade, part number KH64485.
The FAA is proposing this AD to prevent failure of the HPT blades. This
condition, if not addressed, could result in failure of the engine, in-
flight shutdown, and loss of the airplane. See EASA AD 2021-0169 for
additional background information.
FAA's Determination
This product has been approved by the aviation authority of another
country, and is approved for operation in the United States. Pursuant
to the FAA's bilateral agreement with the State of Design Authority,
the FAA has been notified about the unsafe condition described in the
EASA AD. The FAA is issuing this NPRM because the agency evaluated all
the relevant information provided by EASA and determined the unsafe
condition described previously is likely to exist or develop in other
products of the same type design.
Related Service Information Under 1 CFR Part 51
The FAA reviewed EASA AD 2021-0169. EASA AD 2021-0169 specifies
instructions for performing initial and repetitive on-wing BSIs of the
HPT blades to detect axial cracking and, depending on the results of
the inspections, removal from service of the engine for in-shop
replacement of the HPT blade set. EASA AD 2021-0169 also specifies
instructions for replacing HPT blades with a new HPT blade set before
exceeding a specified number of flight cycles.
This material is reasonably available because the interested
parties have access to it through their normal course of business or by
the means identified in ADDRESSES.
Other Related Service Information
The FAA reviewed RR Alert NMSB Trent 1000 72-AK449, Revision 2,
dated July 5, 2021. This Alert NMSB specifies procedures for performing
initial and repetitive on-wing BSIs of the HPT blades to detect axial
cracking. The Alert NMSB also specifies procedures for removing the
engine to replace the HPT blade set before exceeding a specified number
of flight cycles.
Proposed AD Requirements in This NPRM
This proposed AD would require accomplishing the actions specified
in EASA AD 2021-0169, described previously, as incorporated by
reference, except for any differences identified as exceptions in the
regulatory text of this proposed AD and except as discussed under
``Differences Between this Proposed AD and the EASA AD.''
Explanation of Required Compliance Information
In the FAA's ongoing efforts to improve the efficiency of the AD
process, the FAA developed a process to use some civil aviation
authority (CAA) ADs as the primary source of information for compliance
with requirements for corresponding FAA ADs. The FAA has since
coordinated with other manufacturers and CAAs to use this process. As a
result, the FAA proposes to incorporate by reference EASA AD 2021-0169
in the FAA final rule. This proposed AD would, therefore, require
compliance with EASA AD 2021-0169 in its entirety through that
incorporation, except for any differences identified as exceptions in
the regulatory text of this proposed AD. Using common terms that are
the same as the heading of a particular section in EASA AD 2021-0169
does not mean that operators need comply only with that section. For
example, where the AD requirement refers to ``all required actions and
compliance times,'' compliance with this AD requirement is not limited
to the section titled ``Required Action(s) and Compliance Time(s)'' in
EASA AD 2021-0169. Service information specified by EASA AD 2021-0169
for compliance will be available at https://www.regulations.gov by
searching for and locating Docket No. FAA-2022-0150 after the FAA final
rule is published.
Differences Between This Proposed AD and the EASA AD
Where EASA AD 2021-0169 requires compliance from its effective
date, this proposed AD would require using the effective date of this
AD. This proposed AD does not mandate compliance with the ``Remarks''
section of EASA AD 2021-0169.
Interim Action
The FAA considers that this proposed AD would be an interim action.
If final action is later identified, the FAA might consider additional
rulemaking.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 16 engines installed on airplanes of U.S. Registry.
The FAA estimates the following costs to comply with this proposed
AD:
[[Page 11357]]
Estimated Costs
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Cost per Cost on U.S.
Action Labor cost Parts cost product operators
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BSI HPT Blades........................ 4 work-hours x $85 per $0 $340 $5,440
hour = $340.
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The FAA estimates the following costs to do any necessary
replacements that would be required based on the results of the
proposed inspection. The agency has no way of determining the number of
aircraft that might need this replacement:
On-Condition Costs
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Cost per
Action Labor cost Parts cost product
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Replace HPT Blade Set......................... 16 work-hours x $85 per hour = $2,001,780 $2,003,140
$1,360.
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The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some of the costs of this
proposed AD may be covered under warranty, thereby reducing the cost
impact on affected operators.
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
The FAA is issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: General requirements.
Under that section, Congress charges the FAA with promoting safe flight
of civil aircraft in air commerce by prescribing regulations for
practices, methods, and procedures the Administrator finds necessary
for safety in air commerce. This regulation is within the scope of that
authority because it addresses an unsafe condition that is likely to
exist or develop on products identified in this rulemaking action.
Regulatory Findings
The FAA determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would not
have a substantial direct effect on the States, on the relationship
between the national Government and the States, or on the distribution
of power and responsibilities among the various levels of government.
For the reasons discussed above, I certify this proposed
regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Would not affect intrastate aviation in Alaska, and
(3) Would not have a significant economic impact, positive or
negative, on a substantial number of small entities under the
criteria of the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive:
Rolls-Royce Deutschland Ltd & Co KG (Type Certificate previously
held by Rolls-Royce plc): Docket No. FAA-2022-0150; Project
Identifier MCAI-2021-00839-E.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by April 15, 2022.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Rolls-Royce Deutschland Ltd. & Co KG (Type
Certificate previously held by Rolls-Royce plc) Trent 7000-72 and
Trent 7000-72C model turbofan engines.
(d) Subject
Joint Aircraft Service Component (JASC) Code 7230, Turbine
Engine Compressor Section.
(e) Unsafe Condition
This AD was prompted by in-service experience showing that
certain high-pressure turbine (HPT) blades may prematurely
deteriorate to an unacceptable condition when managed in accordance
with the inspection intervals defined in the Time Limits Manual. The
FAA is issuing this AD to prevent failure of the HPT blades. The
unsafe condition, if not addressed, could result in failure of the
engine, in-flight shutdown, and loss of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
Except as specified in paragraph (h) of this AD: Perform all
required actions within the compliance times specified in, and in
accordance with, European Union Aviation Safety Agency AD 2021-0169,
dated July 19, 2021 (EASA AD 2021-0169).
(h) Exceptions to EASA AD 2021-0169
(1) Where EASA AD 2021-0169 requires compliance from its
effective date, this proposed AD would require using the effective
date of this AD.
(2) This AD does not require compliance with the ``Remarks''
section of EASA AD 2021-0169.
(i) Alternative Methods of Compliance (AMOCs)
(1) The Manager, ECO Branch, FAA, has the authority to approve
AMOCs for this AD, if requested using the procedures found in 14 CFR
39.19. In accordance with 14 CFR 39.19, send your request to your
principal inspector or local Flight Standards District Office, as
appropriate. If sending information directly to the manager of the
ECO Branch, send it to the attention of the person identified in
paragraph (j)(2) 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.
[[Page 11358]]
(j) Related Information
(1) For more information about EASA AD 2021-0169, contact EASA,
Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999
000; email: [email protected]. You may find this material on the
EASA website at https://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. This material may be found in the AD docket at
https://www.regulations.gov by searching for and locating Docket No.
FAA-2022-0150.
(2) For more information about this AD, contact Nicholas Paine,
Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue,
Burlington, MA 01803; phone: (781) 238-7116; email:
[email protected].
(3) For service information identified in this AD, 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: https://www.rolls-royce.com/contact-us.aspx. 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.
Issued on February 24, 2022.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2022-04276 Filed 2-28-22; 8:45 am]
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