Airworthiness Directives; Rolls-Royce plc Turbofan Engines, 34755-34758 [2018-15649]
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Federal Register / Vol. 83, No. 141 / Monday, July 23, 2018 / Rules and Regulations
(c) Applicability
This AD applies to The Boeing Company
Model 787 series airplanes, certificated in
any category, powered by Rolls Royce Trent
1000 engines.
(d) Subject
Air Transport Association (ATA) of
America Code 78, Engine Exhaust System.
(e) Unsafe Condition
This AD was prompted by reports of
failures of the inner fixed structure (IFS)
forward upper fire seal and damage to
thermal insulation blankets in the forward
upper area of the thrust reverser (TR). We are
issuing this AD to prevent failure of the IFS
forward upper fire seal, which causes the loss
of seal pressurization and allows fan bypass
air to enter the engine core compartment. Fan
bypass air entering the engine core
compartment could degrade the ability to
detect and extinguish an engine fire,
resulting in an uncontrolled fire.
Furthermore, fan bypass air entering the
engine core compartment could cause
damage to the TR insulation blanket,
resulting in thermal damage to the TR inner
wall, the subsequent release of engine
exhaust components, and consequent damage
to critical areas of the airplane.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Required Actions
For Model 787–8 and 787–9 series
airplanes identified in Boeing Alert Service
Bulletin B787–81205–SB780033–00, Issue
001, dated November 1, 2017 (‘‘BASB B787–
81205–SB780033–00, Issue 001’’): Within 36
months after the effective date of this AD, do
all applicable actions identified as ‘‘RC’’
(required for compliance) in, and in
accordance with, the Accomplishment
Instructions of BASB B787–81205–
SB780033–00, Issue 001.
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(h) Parts Installation Prohibition
For Model 787 series airplanes powered by
Rolls Royce Trent 1000 engines, as of the
effective date of this AD, no person may
install a thrust reverser with an IFS forward
upper fire seal having part number (P/N)
725Z3171–127 or P/N 725Z3171–128.
(i) Alternative Methods of Compliance
(AMOCs)
(1) The Manager, Seattle ACO 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
certification office, send it to the attention of
the person identified in paragraph (j) 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 local flight standards district office/
certificate holding district office.
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(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
Commercial Airplanes Organization
Designation Authorization (ODA) that has
been authorized by the Manager, Seattle ACO
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.
(4) For service information that contains
steps that are labeled as RC, the provisions
of paragraphs (i)(4)(i) and (i)(4)(ii) of this AD
apply.
(i) The steps labeled as RC, including
substeps under an RC step and any figures
identified in an RC step, must be done to
comply with the AD. If a step or substep is
labeled ‘‘RC Exempt,’’ then the RC
requirement is removed from that step or
substep. An AMOC is required for any
deviations to RC steps, including substeps
and identified figures.
(ii) Steps not labeled as RC may be
deviated from using accepted methods in
accordance with the operator’s maintenance
or inspection program without obtaining
approval of an AMOC, provided the RC steps,
including substeps and identified figures, can
still be done as specified, and the airplane
can be put back in an airworthy condition.
(j) Related Information
For more information about this AD,
contact Tak Kobayashi, Aerospace Engineer,
Propulsion Section, FAA, Seattle ACO
Branch, 2200 South 216th St., Des Moines,
WA 98198; phone: 206–231–3553; email:
Takahisa.Kobayashi@faa.gov.
(k) 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 Alert Service Bulletin B787–
81205–SB780033–00, Issue 001, dated
November 1, 2017.
(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; internet https://
www.myboeingfleet.com.
(4) You may view this service information
at the FAA, Transport Standards 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
National Archives and Records
Administration (NARA). For information on
the availability of this material at NARA, call
202–741–6030, or go to: https://
www.archives.gov/federal-register/cfr/ibrlocations.html.
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34755
Issued in Des Moines, Washington, on July
13, 2018.
Michael Kaszycki,
Acting Director, System Oversight Division,
Aircraft Certification Service.
[FR Doc. 2018–15535 Filed 7–20–18; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2017–1237; Product
Identifier 2017–NE–43–AD; Amendment 39–
19333; AD 2018–15–01]
RIN 2120–AA64
Airworthiness Directives; Rolls-Royce
plc Turbofan Engines
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule; request for
comments.
AGENCY:
We are adopting a new
airworthiness directive (AD) for certain
Rolls-Royce plc (RR) Trent 1000–A,
Trent 1000–C, Trent 1000–D, Trent
1000–E, Trent 1000–G, Trent 1000–H,
Trent 1000–A2, Trent 1000–C2, Trent
1000–D2, Trent 1000–E2, Trent 1000–
G2, Trent 1000–H2, Trent 1000–J2,
Trent 1000–K2, and Trent 1000–L2
engine models. This AD requires certain
engines susceptible to intermediatepressure turbine (IPT) blade failure not
be installed on an airplane together with
other engines with IPT blades of the
same age. This AD was prompted by
new operating restrictions for engines
with IPT blades susceptible to shank
corrosion and possible blade separation.
We are issuing this AD to address the
unsafe condition on these products.
DATES: This AD is effective August 7,
2018.
The Director of the Federal Register
approved the incorporation by reference
of certain publications listed in this AD
as of August 7, 2018.
We must receive comments on this
AD by September 6, 2018.
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.
SUMMARY:
E:\FR\FM\23JYR1.SGM
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34756
Federal Register / Vol. 83, No. 141 / Monday, July 23, 2018 / Rules and Regulations
• Hand Delivery: U.S. Department of
Transportation, Docket Operations,
M–30, West Building Ground Floor,
Room W12–140, 1200 New Jersey
Avenue SE, Washington, DC 20590,
between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays.
For service information identified in
this final rule, contact Rolls-Royce plc,
Corporate Communications, P.O. Box
31, Derby, England, DE24 8BJ; phone:
011–44–1332–242424; fax: 011–44–
1332–249936; email: https://www.rollsroyce.com/contact/civil_team.jsp;
internet: https://customers.rollsroyce.com/public/rollsroycecare. You
may view this service information at the
FAA, Engine and Propeller Standards
Branch, 1200 District Avenue,
Burlington, MA 01803. For information
on the availability of this material at the
FAA, call 781–238–7759. It is also
available on the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2017–
1237.
Examining the AD Docket
You may examine the AD docket on
the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2017–
1237; 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), the regulatory
evaluation, any comments received, and
other information. The address for the
Docket Operations (phone: 800–647–
5527) is listed above. Comments will be
available in the AD docket shortly after
receipt.
FOR FURTHER INFORMATION CONTACT:
Kevin M. Clark, Aerospace Engineer,
ECO Branch, FAA, 1200 District
Avenue, Burlington, MA 01803; phone:
781–238–7088; fax: 781–238–7199;
email: kevin.m.clark@faa.gov.
SUPPLEMENTARY INFORMATION:
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Discussion
The European Aviation Safety Agency
(EASA), which is the Technical Agent
for the Member States of the European
Community, has issued EASA AD 2018–
0086, dated April 17, 2018 (referred to
hereinafter as ‘‘the MCAI’’), to correct an
unsafe condition for the specified
products. The MCAI states:
An occurrence was reported where,
following N2 vibration and multiple
messages, the flight crew performed an
engine in-flight shut-down (IFSD) and
returned to the departure airport, landing
uneventfully. The post-flight borescope
inspection of the engine revealed an
intermediate pressure turbine blade (IPTB)
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16:12 Jul 20, 2018
Jkt 244001
missing at the shank. Analysis shows that
this kind of failure is due to sulphidation
corrosion cracking.
This condition, if not detected and
corrected, could lead to IPTB shank release,
possibly resulting in an IFSD and consequent
reduced control of the aeroplane.
To address this potential unsafe condition,
RR issued Alert NMSB Trent 1000 72–AJ575
to provide instructions for engine removal
from service when any IPTB with a high level
of sulphidation exposure is identified by
corrosion fatigue life (CFL) model.
Consequently, EASA issued AD 2017–0056
to require removal from service of certain
engines, to be corrected in shop.
Since that AD was issued, prompted by
further occurrences and analyses, it has been
decided that, to reduce the risk of dual IFSD,
a new cyclic life limit must be applied to
certain engines, which determines when an
engine can no longer be installed on an
aeroplane in combination with certain other
engines. RR published the original issue of
the NMSB to provide de-pairing instructions,
including the relevant IPTB cyclic limit for
each engine. Consequently, EASA issued
Emergency AD 2017–0253–E to require depairing of the affected engines.
Since that AD was issued, RR issued
Revision 2 of the NMSB, which removes and
adds certain ESN from the list of affected
engines and introduces another IPTB cyclic
limit.
For the reason described above, this
[EASA] AD retains the requirements of EASA
AD 2017–0253–E, which is superseded,
amends the Applicability, and requires
application of the new limit.
Other Related Service Information
You may obtain further information
by examining the MCAI in the AD
docket on the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2017–
1237.
FAA’s Justification and Determination
of the Effective Date
Related Service Information Under
1 CFR Part 51
We reviewed RR Alert NonModification Service Bulletin (NMSB)
Trent 1000–72–AJ992, Revision 1, dated
January 3, 2018, and Revision 2, dated
April 16, 2018; and RR Service Bulletin
(SB) Trent 1000 72–H818, dated
November 14, 2016. Alert NMSB Trent
1000–72–AJ992 defines operating
restrictions for de-pairing certain
engines before an IPT blade cyclic life.
Revisions 1 and 2 of this NMSB differ
by identifying different engine serial
numbers that are affected by the
respective NMSBs. RR SB Trent 1000
72–H818 introduces a new IPT blade
less susceptible to shank corrosion and
exempt from this AD. 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 the ADDRESSES section.
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We reviewed RR NMSB Trent 1000
72–J442, Revision 1, dated February 21,
2018; and initial issue, dated September
21, 2016; and RR NMSB Trent 1000 72–
J465, Revision 2, dated February 28,
2018; Revision 1, dated January 10,
2017; and initial issue, dated December
22, 2016. RR NMSBs Trent 1000 72–
J442 and Trent 1000 72–J465 describe
procedures for refurbishing an engine
with either serviceable used or new IPT
blades, and also the cleaning and
inspection requirements for the reuse of
IPT blades.
FAA’s Determination
This product has been approved by
EASA and is approved for operation in
the United States. Pursuant to our
bilateral agreement with the European
Community, EASA has notified us of
the unsafe condition described in the
MCAI and service information
referenced above. We are issuing this
AD because we evaluated all relevant
information and determined the unsafe
condition described previously is likely
to exist or develop in other products of
the same type design.
AD Requirements
This AD requires removal of one
engine from an airplane before both
engines exceed their respective IPT
blade operating restrictions.
No domestic operators are affected by
this regulatory action. Therefore, we
find good cause that notice and
opportunity for prior public comment
are unneccessary. In addition, for the
reason stated above, we find that good
cause exists for making this amendment
effective in less than 30 days.
Comments Invited
This AD is a final rule that involves
requirements affecting flight safety, and
was not preceded by notice and an
opportunity for public comment.
However, we invite you to send any
written data, views, or arguments about
this final rule. Send your comments to
an address listed under the ADDRESSES
section. Include the docket number
‘‘Docket No. FAA–2017–1237’’ and
Product Identifier ‘‘2017–NE–43–AD’’ at
the beginning of your comments. We
specifically invite comments on the
overall regulatory, economic,
environmental, and energy aspects of
this final rule. We will consider all
comments received by the closing date
and may amend this final rule because
of those comments.
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Federal Register / Vol. 83, No. 141 / Monday, July 23, 2018 / Rules and Regulations
We will post all comments we
receive, without change, to https://
www.regulations.gov, including any
personal information you provide. We
will also post a report summarizing each
substantive verbal contact we receive
about this final rule.
34757
Costs of Compliance
We estimate that this AD affects 0
engines installed on airplanes of U.S.
registry.
We estimate the following costs to
comply with this AD:
ESTIMATED COSTS
Action
Labor cost
Time-Staggering of selected Trent 1000 engines on B787.
48 work-hours × $85 per hour = $4,080 ........
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Authority for This Rulemaking
Title 49 of the United States Code
specifies the FAA’s authority to issue
rules on aviation safety. Subtitle I,
section 106, describes the authority of
the FAA Administrator. ‘‘Subtitle VII:
Aviation Programs,’’ describes in more
detail the scope of the Agency’s
authority.
We are 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.
This AD is issued in accordance with
authority delegated by the Executive
Director, Aircraft Certification Service,
as authorized by FAA Order 8000.51C.
In accordance with that order, issuance
of ADs is normally a function of the
Compliance and Airworthiness
Division, but during this transition
period, the Executive Director has
delegated the authority to issue ADs
applicable to engines, propellers, and
associated appliances to the Manager,
Engine and Propeller Standards Branch,
Policy and Innovation Division.
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 this AD:
(1) Is not a ‘‘significant regulatory
action’’ under Executive Order 12866,
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(2) Is not a ‘‘significant rule’’ under
the DOT Regulatory Policies and
Procedures (44 FR 11034, February 26,
1979),
(3) Will not affect intrastate aviation
in Alaska, and
(4) 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.
Adoption of 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 adding
the following new airworthiness
directive (AD):
■
2018–15–01 Rolls-Royce plc: Amendment
39–19333; Docket No. FAA–2017–1237;
Product Identifier 2017–NE–43–AD.
(a) Effective Date
This AD is effective August 7, 2018.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Rolls-Royce plc (RR)
Trent 1000–A, Trent 1000–C, Trent 1000–D,
Trent 1000–E, Trent 1000–G, Trent 1000–H,
Trent 1000–A2, Trent 1000–C2, Trent 1000–
D2, Trent 1000–E2, Trent 1000–G2, Trent
1000–H2, Trent 1000–J2, Trent 1000–K2, and
Trent 1000–L2 engine models with engine
serial numbers identified in Appendix 1,
Table 1, of RR Alert Non-Modification
Service Bulletin (NMSB) TRENT 1000 72–
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Cost per
product
Parts cost
$0
Cost on U.S.
operators
$4,080
$0
AJ992, Revision 1, dated January 3, 2018, or
Appendix 1, Table 1, of RR Alert NMSB
TRENT 1000 72–AJ992, Revision 2, dated
April 16, 2018, except those that have
incorporated RR Service Bulletin (SB) Trent
1000 72–H818, dated November 14, 2016.
(d) Subject
Joint Aircraft System Component (JASC)
7250, Turbine Engine, Turbine Section.
(e) Unsafe Condition
This AD was prompted by operating
restrictions that have been defined for certain
engines with intermediate-pressure turbine
(IPT) blades susceptible to shank corrosion
and possible blade separation. These
restrictions define when an engine can no
longer be installed on an airplane together
with other engines susceptible to the same
failure. We are issuing this AD to prevent the
simultaneous failure of both engines. This
unsafe condition, if not addressed, could
result in a dual 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
After the effective date of this AD, for any
affected engine identified in Appendix 1,
Table 1, of RR Alert NMSB TRENT 1000 72–
AJ992, Revision 1, dated January 3, 2018; or
Appendix 1, Table 1, of RR Alert NMSB
TRENT 1000 72–AJ992, Revision 2, dated
April 16, 2018, installed with another
affected engine, listed in the same table, on
the same airplane, remove one of the engines
from the airplane before both engines exceed
their respective IPT blade cyclic life limit
identified in Appendix 1, Table 1, of the
respective NMSB, or within 20 flight cycles,
whichever occurs later.
(h) Installation Prohibition
(1) Engines listed in each group in
Appendix 1, Table 1, of RR Alert NMSB
Trent 1000 72–AJ992, Revision 1, dated
January 3, 2018, or Appendix 1, Table 1, of
Alert NMSB Trent 1000 72–AJ992, Revision
2, dated April 16, 2018, are not to be
installed on an airplane together with an
engine listed in a different group in the same
table once they have exceeded their IPT
blade cyclic life limit identified in Appendix
1, Table 1 of the respective NMSB.
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Federal Register / Vol. 83, No. 141 / Monday, July 23, 2018 / Rules and Regulations
(2) Engines listed in Appendix 1, Table 1,
of RR Alert NMSB Trent 1000 72–AJ992,
Revision 1, dated January 3, 2018, or
Appendix 1, Table 1, of RR Alert NMSB
Trent 1000 72–AJ992, Revision 2, dated April
16, 2018, may not be installed on an airplane
with engines that have IPT blades installed
in accordance with RR NMSB Trent 1000 72–
J442, Revision 1, dated February 21, 2018, or
Initial Issue, dated September 21, 2016; or RR
NMSB Trent 1000 72–J465, Revision 2, dated
February 28, 2018, or Revision 1, dated
January 10, 2017, or Initial Issue, dated
December 22, 2016.
(i) Terminating Action
Modification of an engine in accordance
with the instructions of RR SB Trent 1000
72–H818, dated November 14, 2016,
constitutes terminating action for the
requirements of this AD for that engine.
(j) 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 certification office,
send it to the attention of the person
identified in paragraph (k)(1) of this AD. You
may email your request 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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(k) Related Information
(1) For more information about this AD,
contact Kevin M. Clark, Aerospace Engineer,
ECO Branch, FAA, 1200 District Avenue,
Burlington, MA 01803; phone: 781–238–
7088; fax: 781–238–7199; email:
kevin.m.clark@faa.gov.
(2) Refer to European Aviation Safety
Agency (EASA) AD 2018–0086, dated April
17, 2018, for more information. You may
examine the EASA AD in the AD docket on
the internet at https://www.regulations.gov by
searching for and locating it in Docket No.
FAA–2017–1237.
(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) Rolls-Royce plc (RR) Alert NonModification Service Bulletin (NMSB) Trent
1000–72–AJ992, Revision 1, dated January 3,
2018.
(ii) RR Alert NMSB Trent 1000–72–AJ992,
Revision 2, dated April 16, 2018.
(iii) RR Service Bulletin Trent 1000 72–
H818, dated November 14, 2016.
(3) For RR service information identified in
this AD, contact Rolls-Royce plc, Corporate
Communications, P.O. Box 31, Derby,
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16:12 Jul 20, 2018
Jkt 244001
England, DE24 8BJ; phone: 011–44–1332–
242424; fax: 011–44–1332–249936; email:
https://www.rolls-royce.com/contact/civil_
team.jsp; internet: https://customers.rollsroyce.com/public/rollsroycecare.
(4) You may view this service information
at FAA, Engine and Propeller Standards
Branch, 1200 District Avenue, Burlington,
MA 01803. For information on the
availability of this material at the FAA, call
781–238–7759.
(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, call
202–741–6030, or go to: https://
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued in Burlington, Massachusetts, on
July 17, 2018.
Robert J. Ganley,
Manager, Engine and Propeller Standards
Branch, Aircraft Certification Service.
[FR Doc. 2018–15649 Filed 7–20–18; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2018–0590; Product
Identifier 2018–NE–24–AD; Amendment 39–
19319; AD 2018–13–07]
RIN 2120–AA64
Airworthiness Directives; Rolls-Royce
plc Turbofan Engines
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule; request for
comments.
AGENCY:
We are adopting a new
airworthiness directive (AD) for all
Rolls-Royce plc (RR) Trent 1000–A,
Trent 1000–C, Trent 1000–D, Trent
1000–E, Trent 1000–G, and Trent 1000–
H turbofan engine models. This AD
requires inspecting the intermediatepressure compressor (IPC) stage 1 rotor
blades, IPC stage 2 rotor blades, and IPC
stage 2 dovetail posts, and removing any
cracked parts from service. This AD was
prompted by crack findings on the IPC
rotor blades, which could lead to
separations resulting in engine failures.
We are issuing this AD to address the
unsafe condition on these products.
DATES: This AD is effective August 7,
2018.
The Director of the Federal Register
approved the incorporation by reference
of a certain publication listed in this AD
as of August 7, 2018.
We must receive comments on this
AD by September 6, 2018.
SUMMARY:
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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: U.S. Department of
Transportation, Docket Operations,
M–30, West Building Ground Floor,
Room W12–140, 1200 New Jersey
Avenue SE, Washington, DC 20590,
between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays.
For service information identified in
this final rule, contact Rolls-Royce plc,
Corporate Communications, P.O. Box
31, Derby, England, DE24 8BJ; phone:
011–44–1332–242424; fax: 011–44–
1332–249936; email: corporate.care@
rolls-royce.com; internet: https://
customers.rolls-royce.com/public/
rollsroycecare. You may view this
service information at the FAA, Engine
& Propeller Standards Branch, 1200
District Avenue, Burlington, MA 01803.
For information on the availability of
this material at the FAA, call 781–238–
7759. It is also available on the internet
at https://www.regulations.gov by
searching for and locating Docket No.
FAA–2018–0590.
ADDRESSES:
Examining the AD Docket
You may examine the AD docket on
the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2018–
0590; 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), the regulatory
evaluation, any comments received, and
other information. The street address for
Docket Operations (phone: 800–647–
5527) is listed above. Comments will be
available in the AD docket shortly after
receipt.
FOR FURTHER INFORMATION CONTACT:
Kevin M. Clark, Aerospace Engineer,
ECO Branch, FAA, 1200 District
Avenue, Burlington, MA 01803; phone:
781–238–7088; fax: 781–238–7199;
email: kevin.m.clark@faa.gov.
SUPPLEMENTARY INFORMATION:
Discussion
The European Aviation Safety Agency
(EASA), which is the Technical Agent
for the Member States of the European
E:\FR\FM\23JYR1.SGM
23JYR1
]]>Agencies
[Federal Register Volume 83, Number 141 (Monday, July 23, 2018)]
[Rules and Regulations]
[Pages 34755-34758]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2018-15649]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2017-1237; Product Identifier 2017-NE-43-AD; Amendment
39-19333; AD 2018-15-01]
RIN 2120-AA64
Airworthiness Directives; Rolls-Royce plc Turbofan Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule; request for comments.
-----------------------------------------------------------------------
SUMMARY: We are adopting a new airworthiness directive (AD) for certain
Rolls-Royce plc (RR) Trent 1000-A, Trent 1000-C, Trent 1000-D, Trent
1000-E, Trent 1000-G, Trent 1000-H, Trent 1000-A2, Trent 1000-C2, Trent
1000-D2, Trent 1000-E2, Trent 1000-G2, Trent 1000-H2, Trent 1000-J2,
Trent 1000-K2, and Trent 1000-L2 engine models. This AD requires
certain engines susceptible to intermediate-pressure turbine (IPT)
blade failure not be installed on an airplane together with other
engines with IPT blades of the same age. This AD was prompted by new
operating restrictions for engines with IPT blades susceptible to shank
corrosion and possible blade separation. We are issuing this AD to
address the unsafe condition on these products.
DATES: This AD is effective August 7, 2018.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of August 7,
2018.
We must receive comments on this AD by September 6, 2018.
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.
[[Page 34756]]
Hand Delivery: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590, between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays.
For service information identified in this final rule, contact
Rolls-Royce plc, Corporate Communications, P.O. Box 31, Derby, England,
DE24 8BJ; phone: 011-44-1332-242424; fax: 011-44-1332-249936; email:
https://www.rolls-royce.com/contact/civil_team.jsp; internet: https://customers.rolls-royce.com/public/rollsroycecare. You may view this
service information at the FAA, Engine and Propeller Standards Branch,
1200 District Avenue, Burlington, MA 01803. For information on the
availability of this material at the FAA, call 781-238-7759. It is also
available on the internet at https://www.regulations.gov by searching
for and locating Docket No. FAA-2017-1237.
Examining the AD Docket
You may examine the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2017-
1237; 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), the regulatory evaluation, any comments received, and other
information. The address for the Docket Operations (phone: 800-647-
5527) is listed above. Comments will be available in the AD docket
shortly after receipt.
FOR FURTHER INFORMATION CONTACT: Kevin M. Clark, Aerospace Engineer,
ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone:
781-238-7088; fax: 781-238-7199; email: [email protected].
SUPPLEMENTARY INFORMATION:
Discussion
The European Aviation Safety Agency (EASA), which is the Technical
Agent for the Member States of the European Community, has issued EASA
AD 2018-0086, dated April 17, 2018 (referred to hereinafter as ``the
MCAI''), to correct an unsafe condition for the specified products. The
MCAI states:
An occurrence was reported where, following N2 vibration and
multiple messages, the flight crew performed an engine in-flight
shut-down (IFSD) and returned to the departure airport, landing
uneventfully. The post-flight borescope inspection of the engine
revealed an intermediate pressure turbine blade (IPTB) missing at
the shank. Analysis shows that this kind of failure is due to
sulphidation corrosion cracking.
This condition, if not detected and corrected, could lead to
IPTB shank release, possibly resulting in an IFSD and consequent
reduced control of the aeroplane.
To address this potential unsafe condition, RR issued Alert NMSB
Trent 1000 72-AJ575 to provide instructions for engine removal from
service when any IPTB with a high level of sulphidation exposure is
identified by corrosion fatigue life (CFL) model. Consequently, EASA
issued AD 2017-0056 to require removal from service of certain
engines, to be corrected in shop.
Since that AD was issued, prompted by further occurrences and
analyses, it has been decided that, to reduce the risk of dual IFSD,
a new cyclic life limit must be applied to certain engines, which
determines when an engine can no longer be installed on an aeroplane
in combination with certain other engines. RR published the original
issue of the NMSB to provide de-pairing instructions, including the
relevant IPTB cyclic limit for each engine. Consequently, EASA
issued Emergency AD 2017-0253-E to require de-pairing of the
affected engines.
Since that AD was issued, RR issued Revision 2 of the NMSB,
which removes and adds certain ESN from the list of affected engines
and introduces another IPTB cyclic limit.
For the reason described above, this [EASA] AD retains the
requirements of EASA AD 2017-0253-E, which is superseded, amends the
Applicability, and requires application of the new limit.
You may obtain further information by examining the MCAI in the AD
docket on the internet at https://www.regulations.gov by searching for
and locating Docket No. FAA-2017-1237.
Related Service Information Under 1 CFR Part 51
We reviewed RR Alert Non-Modification Service Bulletin (NMSB) Trent
1000-72-AJ992, Revision 1, dated January 3, 2018, and Revision 2, dated
April 16, 2018; and RR Service Bulletin (SB) Trent 1000 72-H818, dated
November 14, 2016. Alert NMSB Trent 1000-72-AJ992 defines operating
restrictions for de-pairing certain engines before an IPT blade cyclic
life. Revisions 1 and 2 of this NMSB differ by identifying different
engine serial numbers that are affected by the respective NMSBs. RR SB
Trent 1000 72-H818 introduces a new IPT blade less susceptible to shank
corrosion and exempt from this AD. 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
the ADDRESSES section.
Other Related Service Information
We reviewed RR NMSB Trent 1000 72-J442, Revision 1, dated February
21, 2018; and initial issue, dated September 21, 2016; and RR NMSB
Trent 1000 72-J465, Revision 2, dated February 28, 2018; Revision 1,
dated January 10, 2017; and initial issue, dated December 22, 2016. RR
NMSBs Trent 1000 72-J442 and Trent 1000 72-J465 describe procedures for
refurbishing an engine with either serviceable used or new IPT blades,
and also the cleaning and inspection requirements for the reuse of IPT
blades.
FAA's Determination
This product has been approved by EASA and is approved for
operation in the United States. Pursuant to our bilateral agreement
with the European Community, EASA has notified us of the unsafe
condition described in the MCAI and service information referenced
above. We are issuing this AD because we evaluated all relevant
information and determined the unsafe condition described previously is
likely to exist or develop in other products of the same type design.
AD Requirements
This AD requires removal of one engine from an airplane before both
engines exceed their respective IPT blade operating restrictions.
FAA's Justification and Determination of the Effective Date
No domestic operators are affected by this regulatory action.
Therefore, we find good cause that notice and opportunity for prior
public comment are unneccessary. In addition, for the reason stated
above, we find that good cause exists for making this amendment
effective in less than 30 days.
Comments Invited
This AD is a final rule that involves requirements affecting flight
safety, and was not preceded by notice and an opportunity for public
comment. However, we invite you to send any written data, views, or
arguments about this final rule. Send your comments to an address
listed under the ADDRESSES section. Include the docket number ``Docket
No. FAA-2017-1237'' and Product Identifier ``2017-NE-43-AD'' at the
beginning of your comments. We specifically invite comments on the
overall regulatory, economic, environmental, and energy aspects of this
final rule. We will consider all comments received by the closing date
and may amend this final rule because of those comments.
[[Page 34757]]
We will post all comments we receive, without change, to https://www.regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact we
receive about this final rule.
Costs of Compliance
We estimate that this AD affects 0 engines installed on airplanes
of U.S. registry.
We estimate the following costs to comply with this AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
Time-Staggering of selected Trent 1000 48 work-hours x $85 per $0 $4,080 $0
engines on B787. hour = $4,080.
----------------------------------------------------------------------------------------------------------------
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.
We are 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.
This AD is issued in accordance with authority delegated by the
Executive Director, Aircraft Certification Service, as authorized by
FAA Order 8000.51C. In accordance with that order, issuance of ADs is
normally a function of the Compliance and Airworthiness Division, but
during this transition period, the Executive Director has delegated the
authority to issue ADs applicable to engines, propellers, and
associated appliances to the Manager, Engine and Propeller Standards
Branch, Policy and Innovation Division.
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 this AD:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Is not a ``significant rule'' under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979),
(3) Will not affect intrastate aviation in Alaska, and
(4) 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.
Adoption of 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 (AD):
2018-15-01 Rolls-Royce plc: Amendment 39-19333; Docket No. FAA-2017-
1237; Product Identifier 2017-NE-43-AD.
(a) Effective Date
This AD is effective August 7, 2018.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Rolls-Royce plc (RR) Trent 1000-A, Trent
1000-C, Trent 1000-D, Trent 1000-E, Trent 1000-G, Trent 1000-H,
Trent 1000-A2, Trent 1000-C2, Trent 1000-D2, Trent 1000-E2, Trent
1000-G2, Trent 1000-H2, Trent 1000-J2, Trent 1000-K2, and Trent
1000-L2 engine models with engine serial numbers identified in
Appendix 1, Table 1, of RR Alert Non-Modification Service Bulletin
(NMSB) TRENT 1000 72-AJ992, Revision 1, dated January 3, 2018, or
Appendix 1, Table 1, of RR Alert NMSB TRENT 1000 72-AJ992, Revision
2, dated April 16, 2018, except those that have incorporated RR
Service Bulletin (SB) Trent 1000 72-H818, dated November 14, 2016.
(d) Subject
Joint Aircraft System Component (JASC) 7250, Turbine Engine,
Turbine Section.
(e) Unsafe Condition
This AD was prompted by operating restrictions that have been
defined for certain engines with intermediate-pressure turbine (IPT)
blades susceptible to shank corrosion and possible blade separation.
These restrictions define when an engine can no longer be installed
on an airplane together with other engines susceptible to the same
failure. We are issuing this AD to prevent the simultaneous failure
of both engines. This unsafe condition, if not addressed, could
result in a dual 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
After the effective date of this AD, for any affected engine
identified in Appendix 1, Table 1, of RR Alert NMSB TRENT 1000 72-
AJ992, Revision 1, dated January 3, 2018; or Appendix 1, Table 1, of
RR Alert NMSB TRENT 1000 72-AJ992, Revision 2, dated April 16, 2018,
installed with another affected engine, listed in the same table, on
the same airplane, remove one of the engines from the airplane
before both engines exceed their respective IPT blade cyclic life
limit identified in Appendix 1, Table 1, of the respective NMSB, or
within 20 flight cycles, whichever occurs later.
(h) Installation Prohibition
(1) Engines listed in each group in Appendix 1, Table 1, of RR
Alert NMSB Trent 1000 72-AJ992, Revision 1, dated January 3, 2018,
or Appendix 1, Table 1, of Alert NMSB Trent 1000 72-AJ992, Revision
2, dated April 16, 2018, are not to be installed on an airplane
together with an engine listed in a different group in the same
table once they have exceeded their IPT blade cyclic life limit
identified in Appendix 1, Table 1 of the respective NMSB.
[[Page 34758]]
(2) Engines listed in Appendix 1, Table 1, of RR Alert NMSB
Trent 1000 72-AJ992, Revision 1, dated January 3, 2018, or Appendix
1, Table 1, of RR Alert NMSB Trent 1000 72-AJ992, Revision 2, dated
April 16, 2018, may not be installed on an airplane with engines
that have IPT blades installed in accordance with RR NMSB Trent 1000
72-J442, Revision 1, dated February 21, 2018, or Initial Issue,
dated September 21, 2016; or RR NMSB Trent 1000 72-J465, Revision 2,
dated February 28, 2018, or Revision 1, dated January 10, 2017, or
Initial Issue, dated December 22, 2016.
(i) Terminating Action
Modification of an engine in accordance with the instructions of
RR SB Trent 1000 72-H818, dated November 14, 2016, constitutes
terminating action for the requirements of this AD for that engine.
(j) 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
certification office, send it to the attention of the person
identified in paragraph (k)(1) of this AD. You may email your
request 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) Related Information
(1) For more information about this AD, contact Kevin M. Clark,
Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue,
Burlington, MA 01803; phone: 781-238-7088; fax: 781-238-7199; email:
[email protected].
(2) Refer to European Aviation Safety Agency (EASA) AD 2018-
0086, dated April 17, 2018, for more information. You may examine
the EASA AD in the AD docket on the internet at https://www.regulations.gov by searching for and locating it in Docket No.
FAA-2017-1237.
(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) Rolls-Royce plc (RR) Alert Non-Modification Service Bulletin
(NMSB) Trent 1000-72-AJ992, Revision 1, dated January 3, 2018.
(ii) RR Alert NMSB Trent 1000-72-AJ992, Revision 2, dated April
16, 2018.
(iii) RR Service Bulletin Trent 1000 72-H818, dated November 14,
2016.
(3) For RR service information identified in this AD, contact
Rolls-Royce plc, Corporate Communications, P.O. Box 31, Derby,
England, DE24 8BJ; phone: 011-44-1332-242424; fax: 011-44-1332-
249936; email: https://www.rolls-royce.com/contact/civil_team.jsp;
internet: https://customers.rolls-royce.com/public/rollsroycecare.
(4) You may view this service information at FAA, Engine and
Propeller Standards Branch, 1200 District Avenue, Burlington, MA
01803. For information on the availability of this material at the
FAA, call 781-238-7759.
(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, call 202-741-6030, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued in Burlington, Massachusetts, on July 17, 2018.
Robert J. Ganley,
Manager, Engine and Propeller Standards Branch, Aircraft Certification
Service.
[FR Doc. 2018-15649 Filed 7-20-18; 8:45 am]
BILLING CODE 4910-13-P
