83_FR_39534 83 FR 39380 - Airworthiness Directives; Rolls-Royce plc Turbofan Engines

83 FR 39380 - Airworthiness Directives; Rolls-Royce plc Turbofan Engines

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 83, Issue 154 (August 9, 2018)

Page Range39380-39382
FR Document2018-16649

We propose to adopt a new airworthiness directive (AD) for all Rolls-Royce plc (RR) 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 turbofan engine models. This proposed AD was prompted by reports of intermediate-pressure compressor (IPC) rotor seal failures. This proposed AD would require initial and repetitive on-wing borescope inspections (BSI) of affected IPC rotor seals, and removing any cracked parts from service. We are proposing this AD to address the unsafe condition on these products.

Federal Register, Volume 83 Issue 154 (Thursday, August 9, 2018) 
[Federal Register Volume 83, Number 154 (Thursday, August 9, 2018)]
[Proposed Rules]
[Pages 39380-39382]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2018-16649]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0611; Product Identifier 2018-NE-21-AD]
RIN 2120-AA64


Airworthiness Directives; Rolls-Royce plc Turbofan Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: We propose to adopt a new airworthiness directive (AD) for all 
Rolls-Royce plc (RR) 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 turbofan engine models. This proposed AD was prompted 
by reports of intermediate-pressure compressor (IPC) rotor seal 
failures. This proposed AD would require initial and repetitive on-wing 
borescope inspections (BSI) of affected IPC rotor seals, and removing 
any cracked parts from service. We are proposing this AD to address the 
unsafe condition on these products.

DATES: We must receive comments on this proposed AD by September 24, 
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 http://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 service information identified in this NPRM, 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: 
royce.com">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.

Examining the AD Docket

    You may examine the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-
0611; or in person at the Docket Operations office between 9 a.m. and 5 
p.m., Monday through Friday, except Federal holidays. The AD docket 
contains this NPRM, the mandatory continuing airworthiness information 
(MCAI), the regulatory evaluation, any comments received, and other 
information. The 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: [email protected].

SUPPLEMENTARY INFORMATION: 

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposal. Send your comments to an address listed 
under the ADDRESSES section. Include ``Docket No. FAA-2018-0611; 
Product Identifier 2018-NE-21-AD'' at the beginning of your comments. 
We specifically invite comments on the overall regulatory, economic, 
environmental, and energy aspects of this NPRM. We will consider all 
comments received by the closing date and may amend this NPRM because 
of those comments.
    We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive about this NPRM.

Discussion

    The European Aviation Safety Agency (EASA), which is the Technical 
Agent for the Member States of the European Community, has issued EASA 
AD 2018-0095, dated April 24, 2018 (referred to hereinafter as ``the 
MCAI''), to address the unsafe condition on these products. The MCAI 
states:

    During an engine shop visit, an affected seal was found with 
cracking at the seal head. Propagation of such cracking may lead to 
failure, causing secondary impact damage to the IPC module.
    This condition, if not detected and corrected, could lead to 
engine power loss, possibly resulting in reduced control of the 
aeroplane.
    To address this potential unsafe condition, RR published the 
NMSB, providing instructions for on-wing borescope inspections. RR 
previously issued NMSB TRENT 1000 72-J353, which contains 
instructions for in-shop inspections.
    For the reasons described above, this [EASA] AD requires 
repetitive borescope inspections of the front face of the affected 
seals and, depending on the findings, accomplishment of applicable 
corrections action(s).

    You may obtain further information by examining the MCAI in the AD 
docket on the internet at http://www.regulations.gov by searching for 
and locating Docket No. FAA-2018-0611.

Related Service Information Under 1 CFR Part 51

    We reviewed RR Non-Modification Service Bulletin (NMSB) Trent 1000 
72-

[[Page 39381]]

J353, Revision 2, dated February 14, 2018; RR Service Bulletin (SB) 
Trent 1000 72-J704, Initial Issue, dated June 23, 2017; and RR Alert 
NMSB Trent 1000 72-AJ929, Initial Issue, dated November 23, 2017. RR 
NMSB Trent 1000 72-J353, Revision 2, dated February 14, 2018, describes 
procedures for performing BSI of the front and rear face of the IPC 
rotor seal and defines acceptance and rejection criteria. RR SB Trent 
1000 72-J704, Initial Issue, dated June 23, 2017, introduces a revised 
IPC. RR Alert NMSB Trent 1000 72-AJ929, Initial Issue, dated November 
23, 2017, describes procedures for performing BSI of the front face of 
the IPC rotor seal and defines acceptance and rejection criteria.
    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.

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 proposing this AD because we evaluated all the relevant 
information provided by EASA and determined the unsafe condition exists 
and is likely to exist or develop on other products of the same type 
design.

Proposed AD Requirements

    This proposed AD would require initial and repetitive on-wing BSI 
of affected IPC rotor seals, and removing any cracked parts from 
service.

Costs of Compliance

    We estimate that this proposed AD affects 28 engines installed on 
airplanes of U.S. registry.
    We estimate the following costs to comply with this proposed AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                     Cost per      Cost on U.S.
                Action                         Labor cost           Parts cost        product        operators
----------------------------------------------------------------------------------------------------------------
Inspect IPC rotor seal................  7 work-hours x $85 per                $0            $595         $16,660
                                         hour = $595.
----------------------------------------------------------------------------------------------------------------

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

    We 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) 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.

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 (AD):

Rolls-Royce plc: Docket No. FAA-2018-0611; Product Identifier 2018-
NE-21-AD.

(a) Comments Due Date

    We must receive comments by September 24, 2018.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to all Rolls-Royce plc (RR) 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 turbofan engine 
models with intermediate-pressure compressor (IPC) rotor seal, part 
number (P/N) KH77674, installed.

(d) Subject

    Joint Aircraft System Component (JASC) Code 7230, Turbine Engine 
Compressor Section.

(e) Unsafe Condition

    This AD was prompted by reports of IPC rotor seal failures. We 
are issuing this AD to prevent an IPC rotor seal failure. The unsafe 
condition, if not addressed, could result in failure of the IPC 
rotor seal, loss of engine thrust control, and reduced control of 
the airplane.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Required Actions

    (1) Perform an on-wing borescope inspection (BSI) of the IPC 
rotor seal using paragraph 3, Accomplishment Instructions,

[[Page 39382]]

of RR Alert Non-Modification Service Bulletin (NMSB) Trent 1000 72-
AJ929, Initial Issue, dated November 23, 2017, as follows:
    (i) For engines with an IPC rotor seal with 300 cycles since new 
(CSN) or more as of the effective date of this AD, perform a BSI 
before the IPC rotor seal accumulates 400 flight cycles (FC) after 
the effective date of this AD.
    (ii) For engines with an IPC rotor seal with less than 300 CSN 
as of the effective date of this AD, perform a BSI before the IPC 
rotor seal accumulates 300 CSN or within 100 FC after the effective 
date of this AD, whichever is later.
    (iii) For engines that were modified to incorporate RR Service 
Bulletin (SB) Trent 1000 72-J704, Initial Issue, dated June 23, 
2017, before the effective date of this AD, perform a BSI before the 
IPC rotor seal accumulates 400 FC since the shop visit modification 
or before the next flight, whichever occurs later.
    (2) Repeat the on-wing BSI at intervals in accordance with 
Figure 2 of RR Alert NMSB Trent 1000 72-AJ929, Initial Issue, dated 
November 23, 2017.
    (3) An in-shop inspection in accordance with paragraph 3, 
Accomplishment Instructions, of RR NMSB Trent 1000 72-J353, Revision 
2, dated February 14, 2018, may be substituted for an on-wing BSI as 
required by paragraphs (g)(1) and (2) of this AD, within the 
compliance times specified by paragraphs (g)(1) and (2) of this AD.
    (4) If a crack is found on the front face of the seal that is at 
or beyond the rejection limits specified in Figures 1, 2, and 3 of 
RR Alert NMSB Trent 1000 72-AJ929, Initial Issue, dated November 23, 
2017, replace the IPC rotor seal with a part eligible for 
installation before further flight.

(h) Operating Prohibition

    After the effective date of this AD, do not operate an aircraft 
that has two engines installed that are both required by this AD to 
complete either the 50 FC interval inspections or the single 100 FC 
fly-on period as specified in Figures 1, 2, and 3 of RR Alert NMSB 
Trent 1000 72-AJ929, Initial Issue, dated November 23, 2017.

(i) Non-Required Action

    No reporting requirement contained within any of the Alert NMSBs 
referenced in paragraphs (g)(1), (2), and (3) of this AD are 
required by this AD.

(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 
ECO Branch, 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-
0095, dated April 24, 2018, for more information. You may examine 
the MCAI in the AD docket on the internet at http://www.regulations.gov by searching for and locating it in Docket No. 
FAA-2018-0611.
    (3) For service information identified in this proposed 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: royce.com">corporate.care@rolls-royce.com; internet: 
https://customers.rolls-royce.com/public/rollsroycecare. You may 
view this referenced 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.

    Issued in Burlington, Massachusetts, on July 30, 2018.
Robert J. Ganley,
Manager, Engine and Propeller Standards Branch, Aircraft Certification 
Service.
[FR Doc. 2018-16649 Filed 8-8-18; 8:45 am]
 BILLING CODE 4910-13-P

39380 Federal Register / Vol. 83, No. 154 / Thursday, August 9, 2018 / Proposed Rules tests that are identified as RC, those H2, Trent 1000–J2, Trent 1000–K2, and ECO Branch, FAA, 1200 District procedures and tests must be done to comply Trent 1000–L2 turbofan engine models. Avenue, Burlington, MA 01803; phone: with this AD; any procedures or tests that are This proposed AD was prompted by 781–238–7088; fax: 781–238–7199; not identified as RC are recommended. Those reports of intermediate-pressure email: kevin.m.clark@faa.gov. procedures and tests that are not identified as RC may be deviated from using accepted compressor (IPC) rotor seal failures. SUPPLEMENTARY INFORMATION: methods in accordance with the operator’s This proposed AD would require initial and repetitive on-wing borescope Comments Invited maintenance or inspection program without obtaining approval of an AMOC, provided inspections (BSI) of affected IPC rotor We invite you to send any written the procedures and tests identified as RC can seals, and removing any cracked parts relevant data, views, or arguments about be done and the airplane can be put back in from service. We are proposing this AD this proposal. Send your comments to an airworthy condition. Any substitutions or to address the unsafe condition on these an address listed under the ADDRESSES changes to procedures or tests identified as products. section. Include ‘‘Docket No. FAA– RC require approval of an AMOC. 2018–0611; Product Identifier 2018– DATES: We must receive comments on (l) Related Information this proposed AD by September 24, NE–21–AD’’ at the beginning of your (1) Refer to Mandatory Continuing 2018. comments. We specifically invite Airworthiness Information (MCAI) EASA AD comments on the overall regulatory, ADDRESSES: You may send comments, 2018–0102, dated April 27, 2018, for related economic, environmental, and energy using the procedures found in 14 CFR information. This MCAI may be found in the aspects of this NPRM. We will consider AD docket on the internet at http:// 11.43 and 11.45, by any of the following all comments received by the closing www.regulations.gov by searching for and methods: date and may amend this NPRM locating Docket No. FAA–2018–0705. • Federal eRulemaking Portal: Go to because of those comments. (2) For more information about this AD, http://www.regulations.gov. Follow the We will post all comments we contact Sanjay Ralhan, Aerospace Engineer, instructions for submitting comments. receive, without change, to http:// International Section, Transport Standards • Fax: 202–493–2251. Branch, FAA, 2200 South 216th St., Des • Mail: U.S. Department of www.regulations.gov, including any Moines, WA 98198; phone and fax: 206–231– Transportation, Docket Operations, M– personal information you provide. We 3223. 30, West Building Ground Floor, Room will also post a report summarizing each (3) For service information identified in W12 140, 1200 New Jersey Avenue SE, substantive verbal contact we receive this AD, contact Airbus SAS, Airworthiness about this NPRM. Office—EAL, Rond-Point Emile Dewoitine Washington, DC 20590. No: 2, 31700 Blagnac Cedex, France; phone: • Hand Delivery: Deliver to Mail Discussion +33 5 61 93 36 96; fax: +33 5 61 93 45 80; address above between 9 a.m. and 5 The European Aviation Safety Agency email: airworthiness.A330-A340@airbus.com; p.m., Monday through Friday, except (EASA), which is the Technical Agent internet: http://www.airbus.com. You may Federal holidays. for the Member States of the European view this service information at the FAA, For service information identified in Transport Standards Branch, 2200 South Community, has issued EASA AD 2018– this NPRM, contact Rolls-Royce plc, 216th St., Des Moines, WA. For information 0095, dated April 24, 2018 (referred to Corporate Communications, P.O. Box on the availability of this material at the hereinafter as ‘‘the MCAI’’), to address 31, Derby, England, DE24 8BJ; phone: FAA, call 206–231–3195. the unsafe condition on these products. 011–44–1332–242424; fax: 011–44– Issued in Des Moines, Washington, on July The MCAI states: 1332–249936; email: corporate.care@ 27, 2018. rolls-royce.com; internet: https:// During an engine shop visit, an affected James Cashdollar, customers.rolls-royce.com/public/ seal was found with cracking at the seal Acting Director, System Oversight Division, rollsroycecare. You may view this head. Propagation of such cracking may lead Aircraft Certification Service. to failure, causing secondary impact damage service information at the FAA, Engine to the IPC module. [FR Doc. 2018–16733 Filed 8–8–18; 8:45 am] & Propeller Standards Branch, 1200 This condition, if not detected and BILLING CODE 4910–13–P District Avenue, Burlington, MA 01803. corrected, could lead to engine power loss, For information on the availability of possibly resulting in reduced control of the this material at the FAA, call 781–238– aeroplane. DEPARTMENT OF TRANSPORTATION 7759. To address this potential unsafe condition, RR published the NMSB, providing Federal Aviation Administration Examining the AD Docket instructions for on-wing borescope You may examine the AD docket on inspections. RR previously issued NMSB 14 CFR Part 39 the internet at http:// TRENT 1000 72–J353, which contains instructions for in-shop inspections. [Docket No. FAA–2018–0611; Product www.regulations.gov by searching for For the reasons described above, this Identifier 2018–NE–21–AD] and locating Docket No. FAA–2018– [EASA] AD requires repetitive borescope 0611; or in person at the Docket inspections of the front face of the affected RIN 2120–AA64 Operations office between 9 a.m. and 5 seals and, depending on the findings, p.m., Monday through Friday, except accomplishment of applicable corrections Airworthiness Directives; Rolls-Royce Federal holidays. The AD docket action(s). plc Turbofan Engines contains this NPRM, the mandatory You may obtain further information AGENCY: Federal Aviation continuing airworthiness information by examining the MCAI in the AD Administration (FAA), DOT. (MCAI), the regulatory evaluation, any docket on the internet at http:// sradovich on DSK3GMQ082PROD with PROPOSALS ACTION: Notice of proposed rulemaking comments received, and other www.regulations.gov by searching for (NPRM). information. The address for Docket and locating Docket No. FAA–2018– Operations (phone: 800–647–5527) is 0611. SUMMARY: We propose to adopt a new listed above. Comments will be airworthiness directive (AD) for all available in the AD docket shortly after Related Service Information Under 1 Rolls-Royce plc (RR) Trent 1000–A2, receipt. CFR Part 51 Trent 1000–C2, Trent 1000–D2, Trent FOR FURTHER INFORMATION CONTACT: We reviewed RR Non-Modification 1000–E2, Trent 1000–G2, Trent 1000– Kevin M. Clark, Aerospace Engineer, Service Bulletin (NMSB) Trent 1000 72– VerDate Sep<11>2014 16:04 Aug 08, 2018 Jkt 244001 PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 E:\FR\FM\09AUP1.SGM 09AUP1

Federal Register / Vol. 83, No. 154 / Thursday, August 9, 2018 / Proposed Rules 39381 J353, Revision 2, dated February 14, defines acceptance and rejection relevant information provided by EASA 2018; RR Service Bulletin (SB) Trent criteria. and determined the unsafe condition 1000 72–J704, Initial Issue, dated June This service information is reasonably exists and is likely to exist or develop 23, 2017; and RR Alert NMSB Trent available because the interested parties on other products of the same type 1000 72–AJ929, Initial Issue, dated have access to it through their normal design. November 23, 2017. RR NMSB Trent course of business or by the means Proposed AD Requirements 1000 72–J353, Revision 2, dated identified in the ADDRESSES section. February 14, 2018, describes procedures This proposed AD would require FAA’s Determination initial and repetitive on-wing BSI of for performing BSI of the front and rear This product has been approved by affected IPC rotor seals, and removing face of the IPC rotor seal and defines EASA, and is approved for operation in any cracked parts from service. acceptance and rejection criteria. RR SB the United States. Pursuant to our Trent 1000 72–J704, Initial Issue, dated bilateral agreement with the European Costs of Compliance June 23, 2017, introduces a revised IPC. Community, EASA has notified us of We estimate that this proposed AD RR Alert NMSB Trent 1000 72–AJ929, the unsafe condition described in the affects 28 engines installed on airplanes Initial Issue, dated November 23, 2017, MCAI and service information of U.S. registry. describes procedures for performing BSI referenced above. We are proposing this We estimate the following costs to of the front face of the IPC rotor seal and AD because we evaluated all the comply with this proposed AD: ESTIMATED COSTS Cost per Cost on U.S. Action Labor cost Parts cost product operators Inspect IPC rotor seal ..................................... 7 work-hours × $85 per hour = $595 ............. $0 $595 $16,660 Authority for This Rulemaking under Executive Order 13132. This § 39.13 [Amended] Title 49 of the United States Code proposed AD would not have a ■ 2. The FAA amends § 39.13 by adding specifies the FAA’s authority to issue substantial direct effect on the States, on the following new airworthiness rules on aviation safety. Subtitle I, the relationship between the national directive (AD): section 106, describes the authority of Government and the States, or on the Rolls-Royce plc: Docket No. FAA–2018– the FAA Administrator. Subtitle VII: distribution of power and 0611; Product Identifier 2018–NE–21– Aviation Programs, describes in more responsibilities among the various AD. detail the scope of the Agency’s levels of government. (a) Comments Due Date authority. For the reasons discussed above, I We must receive comments by September We are issuing this rulemaking under certify this proposed regulation: 24, 2018. the authority described in Subtitle VII, (1) Is not a ‘‘significant regulatory Part A, Subpart III, Section 44701: (b) Affected ADs action’’ under Executive Order 12866, ‘‘General requirements.’’ Under that (2) Is not a ‘‘significant rule’’ under None. section, Congress charges the FAA with the DOT Regulatory Policies and (c) Applicability promoting safe flight of civil aircraft in Procedures (44 FR 11034, February 26, This AD applies to all Rolls-Royce plc (RR) air commerce by prescribing regulations 1979), Trent 1000–A2, Trent 1000–C2, Trent 1000– for practices, methods, and procedures D2, Trent 1000–E2, Trent 1000–G2, Trent (3) Will not affect intrastate aviation the Administrator finds necessary for 1000–H2, Trent 1000–J2, Trent 1000–K2, and in Alaska, and safety in air commerce. This regulation Trent 1000–L2 turbofan engine models with is within the scope of that authority (4) Will not have a significant intermediate-pressure compressor (IPC) rotor because it addresses an unsafe condition economic impact, positive or negative, seal, part number (P/N) KH77674, installed. that is likely to exist or develop on on a substantial number of small entities (d) Subject products identified in this rulemaking under the criteria of the Regulatory Flexibility Act. Joint Aircraft System Component (JASC) action. Code 7230, Turbine Engine Compressor This AD is issued in accordance with List of Subjects in 14 CFR Part 39 Section. authority delegated by the Executive Air transportation, Aircraft, Aviation (e) Unsafe Condition Director, Aircraft Certification Service, as authorized by FAA Order 8000.51C. safety, Incorporation by reference, This AD was prompted by reports of IPC In accordance with that order, issuance Safety. rotor seal failures. We are issuing this AD to prevent an IPC rotor seal failure. The unsafe of ADs is normally a function of the The Proposed Amendment condition, if not addressed, could result in Compliance and Airworthiness failure of the IPC rotor seal, loss of engine Division, but during this transition Accordingly, under the authority thrust control, and reduced control of the period, the Executive Director has delegated to me by the Administrator, airplane. the FAA proposes to amend 14 CFR part sradovich on DSK3GMQ082PROD with PROPOSALS delegated the authority to issue ADs 39 as follows: (f) Compliance applicable to engines, propellers, and associated appliances to the Manager, Comply with this AD within the Engine and Propeller Standards Branch, PART 39—AIRWORTHINESS compliance times specified, unless already DIRECTIVES done. Policy and Innovation Division. (g) Required Actions Regulatory Findings ■ 1. The authority citation for part 39 (1) Perform an on-wing borescope We determined that this proposed AD continues to read as follows: inspection (BSI) of the IPC rotor seal using would not have federalism implications Authority: 49 U.S.C. 106(g), 40113, 44701. paragraph 3, Accomplishment Instructions, VerDate Sep<11>2014 16:04 Aug 08, 2018 Jkt 244001 PO 00000 Frm 00006 Fmt 4702 Sfmt 4702 E:\FR\FM\09AUP1.SGM 09AUP1

39382 Federal Register / Vol. 83, No. 154 / Thursday, August 9, 2018 / Proposed Rules of RR Alert Non-Modification Service (k) Related Information online instructions for sending your Bulletin (NMSB) Trent 1000 72–AJ929, Initial (1) For more information about this AD, comments electronically. Issue, dated November 23, 2017, as follows: contact Kevin M. Clark, Aerospace Engineer, • Fax: 202–493–2251. (i) For engines with an IPC rotor seal with ECO Branch, FAA, 1200 District Avenue, • Mail: Send comments to the U.S. 300 cycles since new (CSN) or more as of the Burlington, MA 01803; phone: 781–238– effective date of this AD, perform a BSI Department of Transportation, Docket 7088; fax: 781–238–7199; email: Operations, M–30, West Building before the IPC rotor seal accumulates 400 kevin.m.clark@faa.gov. flight cycles (FC) after the effective date of Ground Floor, Room W12–140, 1200 (2) Refer to European Aviation Safety this AD. Agency (EASA) AD 2018–0095, dated April New Jersey Avenue SE, Washington, DC (ii) For engines with an IPC rotor seal with 20590–0001. 24, 2018, for more information. You may less than 300 CSN as of the effective date of examine the MCAI in the AD docket on the • Hand Delivery: Deliver to the this AD, perform a BSI before the IPC rotor ‘‘Mail’’ address between 9 a.m. and 5 internet at http://www.regulations.gov by seal accumulates 300 CSN or within 100 FC searching for and locating it in Docket No. p.m., Monday through Friday, except after the effective date of this AD, whichever is later. FAA–2018–0611. Federal holidays. (iii) For engines that were modified to (3) For service information identified in this proposed AD, contact Rolls-Royce plc, Examining the AD Docket incorporate RR Service Bulletin (SB) Trent 1000 72–J704, Initial Issue, dated June 23, Corporate Communications, P.O. Box 31, You may examine the AD docket on 2017, before the effective date of this AD, Derby, England, DE24 8BJ; phone: 011–44– the internet at http:// 1332–242424; fax: 011–44–1332–249936; perform a BSI before the IPC rotor seal www.regulations.gov by searching for accumulates 400 FC since the shop visit email: corporate.care@rolls-royce.com; internet: https://customers.rolls-royce.com/ and locating Docket No. FAA–2018– modification or before the next flight, 0694; or in person at Docket Operations whichever occurs later. public/rollsroycecare. You may view this referenced service information at the FAA, between 9 a.m. and 5 p.m., Monday (2) Repeat the on-wing BSI at intervals in accordance with Figure 2 of RR Alert NMSB Engine & Propeller Standards Branch, 1200 through Friday, except Federal holidays. Trent 1000 72–AJ929, Initial Issue, dated District Avenue, Burlington, MA 01803. For The AD docket contains this proposed November 23, 2017. information on the availability of this AD, the European Aviation Safety (3) An in-shop inspection in accordance material at the FAA, call 781–238–7759. Agency (EASA) AD, the economic with paragraph 3, Accomplishment Issued in Burlington, Massachusetts, on evaluation, any comments received, and Instructions, of RR NMSB Trent 1000 72– July 30, 2018. other information. The street address for J353, Revision 2, dated February 14, 2018, Robert J. Ganley, Docket Operations (telephone 800–647– may be substituted for an on-wing BSI as 5527) is in the ADDRESSES section. required by paragraphs (g)(1) and (2) of this Manager, Engine and Propeller Standards AD, within the compliance times specified Branch, Aircraft Certification Service. Comments will be available in the AD by paragraphs (g)(1) and (2) of this AD. [FR Doc. 2018–16649 Filed 8–8–18; 8:45 am] docket shortly after receipt. (4) If a crack is found on the front face of BILLING CODE 4910–13–P For service information identified in the seal that is at or beyond the rejection this proposed rule, contact Airbus limits specified in Figures 1, 2, and 3 of RR Helicopters, 2701 N Forum Drive, Grand Alert NMSB Trent 1000 72–AJ929, Initial DEPARTMENT OF TRANSPORTATION Prairie, TX 75052; telephone (972) 641– Issue, dated November 23, 2017, replace the 0000 or (800) 232–0323; fax (972) 641– IPC rotor seal with a part eligible for Federal Aviation Administration 3775; or at http://www.helicopters installation before further flight. .airbus.com/website/en/ref/Technical- (h) Operating Prohibition 14 CFR Part 39 Support_73.html. You may review the After the effective date of this AD, do not [Docket No. FAA–2018–0694; Directorate referenced service information at the operate an aircraft that has two engines Identifier 2016–SW–068–AD] FAA, Office of the Regional Counsel, installed that are both required by this AD to Southwest Region, 10101 Hillwood complete either the 50 FC interval RIN 2120–AA64 Pkwy., Room 6N–321, Fort Worth, TX inspections or the single 100 FC fly-on period 76177. as specified in Figures 1, 2, and 3 of RR Alert Airworthiness Directives; Airbus NMSB Trent 1000 72–AJ929, Initial Issue, Helicopters FOR FURTHER INFORMATION CONTACT: dated November 23, 2017. David Hatfield, Aviation Safety AGENCY: Federal Aviation Engineer, Safety Management Section, (i) Non-Required Action Administration (FAA), DOT. Rotorcraft Standards Branch, FAA, No reporting requirement contained within ACTION: Notice of proposed rulemaking 10101 Hillwood Pkwy., Fort Worth, TX any of the Alert NMSBs referenced in paragraphs (g)(1), (2), and (3) of this AD are (NPRM). 76177; telephone (817) 222–5110; email required by this AD. david.hatfield@faa.gov. SUMMARY: We propose to adopt a new SUPPLEMENTARY INFORMATION: (j) Alternative Methods of Compliance airworthiness directive (AD) for Airbus (AMOCs) Helicopters Model EC225LP helicopters. Comments Invited (1) The Manager, ECO Branch, FAA, has This proposed AD would require We invite you to participate in this the authority to approve AMOCs for this AD, repetitive inspections of each life raft if requested using the procedures found in 14 rulemaking by submitting written inflation cylinder percussion system comments, data, or views. We also CFR 39.19. In accordance with 14 CFR 39.19, bellcrank (bellcrank). This proposed AD send your request to your principal inspector invite comments relating to the is prompted by reports of jammed economic, environmental, energy, or or local Flight Standards District Office, as appropriate. If sending information directly bellcranks. The actions of this proposed federalism impacts that might result sradovich on DSK3GMQ082PROD with PROPOSALS to the manager of the ECO Branch, send it to AD are intended to prevent an unsafe from adopting the proposals in this the attention of the person identified in condition on these products. document. The most helpful comments paragraph (k)(1) of this AD. You may email DATES: We must receive comments on reference a specific portion of the your request to: ANE-AD-AMOC@faa.gov. this proposed AD by October 9, 2018. (2) Before using any approved AMOC, proposal, explain the reason for any notify your appropriate principal inspector, ADDRESSES: You may send comments by recommended change, and include or lacking a principal inspector, the manager any of the following methods: supporting data. To ensure the docket of the local flight standards district office/ • Federal eRulemaking Docket: Go to does not contain duplicate comments, certificate holding district office. http://www.regulations.gov. Follow the commenters should send only one copy VerDate Sep<11>2014 16:04 Aug 08, 2018 Jkt 244001 PO 00000 Frm 00007 Fmt 4702 Sfmt 4702 E:\FR\FM\09AUP1.SGM 09AUP1


Document Created: 2018-08-09 01:11:24
Document Modified: 2018-08-09 01:11:24
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionProposed Rules
ActionNotice of proposed rulemaking (NPRM).
DatesWe must receive comments on this proposed AD by September 24, 2018.
ContactKevin M. Clark, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7088; fax: 781-238-7199; email: [email protected]
FR Citation83 FR 39380 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety
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