80 FR 22137 - Airworthiness Directives; Rolls-Royce plc Turbofan Engines
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 80, Issue 76 (April 21, 2015)
Federal Aviation Administration
Federal Register Volume 80, Issue 76 (April 21, 2015)
| Page Range | 22137-22140 | |
| FR Document | 2015-09001 |
[Federal Register Volume 80, Number 76 (Tuesday, April 21, 2015)] [Proposed Rules] [Pages 22137-22140] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2015-09001] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2014-0363; Directorate Identifier 2014-NE-08-AD] RIN 2120-AA64 Airworthiness Directives; Rolls-Royce plc Turbofan Engines AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period. ----------------------------------------------------------------------- SUMMARY: We are revising an earlier proposed airworthiness directive (AD) for all Rolls-Royce plc (RR) RB211 Trent 768-60, 772-60, and 772B- 60 turbofan engines. The NPRM proposed to require [[Page 22138]] inspection of the fan case low-pressure (LP) fuel tubes and clips and the fuel oil heat exchanger (FOHE) mounts and hardware. The NPRM was prompted by fuel leaks caused by damage to the fan case LP fuel tube. This supplemental action revises the NPRM by expanding inspections and corrective actions, correcting a part number (P/N) and the costs of compliance, reducing the applicability, providing another method to comply with certain requirements, and giving credit for certain previous actions. We are proposing this SNPRM to prevent failure of the fan case LP fuel tube, which could lead to an in-flight engine shutdown, loss of thrust control, and damage to the airplane. DATES: We must receive comments by June 22, 2015. ADDRESSES: You may send comments by any of the following methods:Federal eRulemaking Portal: Go to http://www.regulations.gov and follow the instructions for sending your comments electronically. Mail: Docket Management Facility, U.S. Department of Transportation, 1200 New Jersey Avenue SE., West Building Ground Floor, Room W12-140, Washington, DC 20590-0001. Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. Fax: 202-493-2251. For service information identified in this SNPRM, 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: http://www.rolls-royce.com/contact/civil_team.jsp; Internet: https://www.aeromanager.com. You may view this service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7125. 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-2014- 0363; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this proposed AD, the mandatory continuing airworthiness information (MCAI), the regulatory evaluation, any comments received, and other information. The address for the Docket Office (phone: 800- 647-5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Wego Wang, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7134; fax: 781-238-7199; email: wego.wang@faa.gov. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant data, views, or arguments about this SNPRM. Send your comments to an address listed under the ADDRESSES section. Include ``Docket No. FAA-2014-0363; Directorate Identifier 2014-NE-08-AD'' at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this SNPRM. We will consider all comments received by the closing date and may amend this SNPRM based on 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 with FAA personnel concerning this SNPRM. Discussion We issued an NPRM to amend 14 CFR part 39 by adding an AD that would apply to the specified products. The NPRM was published in the Federal Register on July 3, 2014 (79 FR 37965). The NPRM proposed to require inspection of the fan case LP fuel tubes and clips and the FOHE mounts and hardware. Related Service Information under 1 CFR Part 51 We reviewed RR Alert Non-Modification Service Bulletin (NMSB) No. RB.211-73-AH522, Revision 2, dated July 18, 2014; RR NMSB No. RB.211- 73-AH837, initial issue, dated September 9, 2014; and RR NMSB No. RB.211-73-G848, Revision 3, dated June 12, 2014. This service information describes procedures for inspecting, and replacing if required, the fan case LP fuel tube and clips, and the FOHE mounts and hardware. This service information is reasonably available because the interested parties have access to it through their normal course of business or see ADDRESSES for other ways to access this service information. Actions Since Previous NPRM Was Issued Since we issued the NPRM (79 FR 37965, July 3, 2014), RR received reports of additional failures of clips associated with the LP fuel tube occurring prior to the next inspection as required by the NPRM. RR published NMSB No. RB.211-73-AH837, initial issue, dated September 9, 2014, to provide instructions for additional specific visual inspections, at shorter intervals, of the upper clip attaching feature and the bracket holding this clip to the oil tank and, based on inspection results, instructions for corrective actions. The European Aviation Safety Agency (EASA) also issued EASA AD 2014-0243, dated November 6, 2014, and EASA AD 2014-0243R1, dated December 10, 2014, which mandate additional inspections and corrective actions, grant credit for certain prior inspections, allow a certain in-shop inspection to serve in lieu of a required visual inspection, and state that replacing parts as a result of the inspections required by those EASA ADs, and as described in paragraphs (e)(1), (e)(2), and (e)(3) of this AD, are not terminating action. We reviewed EASA's changes and concluded that they are necessary to correct the unsafe condition this SNPRM addresses. We incorporate EASA's changes into paragraphs (e)(1) and (e)(4) of this SNPRM. In addition to these changes, we made other changes. Since we issued the NPRM (79 FR 37965, July 3, 2014), we found that we referenced a non-existent fan case LP fuel tube P/N in the NPRM. Specifically, fan case LP fuel tube, P/N FW535776, does not exist. We changed paragraph (e)(3) of this SNPRM to eliminate the non-existent part number, replacing it with the correct one for the fan case LP fuel tube, P/N FW53576. We also found that we did not include in our cost estimate an estimate of the number of engines that we expect will fail the proposed inspections. We revised our cost estimate in this SNPRM by adding an estimate of the number of engines that we expect will fail inspection, and the cost of replacement parts. We also found that we did not provide adequate information to identify the applicable engines affected by this AD. We changed the Applicability paragraph to specify that certain engine models outfitted with fan case LP fuel tube, P/N FW53576, when installed by incorporating either RR production modification 73-F343, or RR Service Bulletin (SB) No. RB.211-73-F343, Revision 4, dated May 26, 2011, are affected by this SNPRM. Comments We gave the public the opportunity to participate in developing this proposed [[Page 22139]] AD. We received no comments on the NPRM (79 FR 37965, July 3, 2014). FAA's Determination We are proposing this SNPRM because we evaluated all the relevant information and determined the unsafe condition described previously is likely to exist or develop in other products of the same type design. Certain changes described above expand the scope of the NPRM (79 FR 37965, July 3, 2014). As a result, we have determined that it is necessary to reopen the comment period to provide additional opportunity for the public to comment on this SNPRM. Proposed Requirements of This SNPRM This SNPRM would require accomplishing the actions specified in the NPRM, except as discussed in the Actions Since Previous NPRM was Issued paragraph. Costs of Compliance We estimate that this proposed AD affects about 50 engines installed on airplanes of U.S. registry. We also estimate that it would take about 6 hours per engine to comply with this proposed AD. The average labor rate is $85 per hour. We also estimate that 25 of the engines will fail the inspection proposed by this AD. Required parts cost about $4,031 per engine. Based on these figures, we estimate the cost of this proposed AD on U.S. operators to be $126,275. 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. Regulatory Findings We determined that 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 to the extent that it justifies making a regulatory distinction, 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): Rolls-Royce plc: Docket No. FAA-2014-0363; Directorate Identifier 2014-NE-08-AD. (a) Comments Due Date We must receive comments by June 22, 2015. (b) Affected ADs None. (c) Applicability This AD applies to all Rolls-Royce plc (RR) RB211 Trent 768-60, 772-60, and 772B-60 turbofan engines, if fitted with fuel tube, part number (P/N) FW53576, which was incorporated through RR production modification 73-F343 or which were modified in service in accordance with RR Service Bulletin (SB) No. RB.211-73-F343, Revision 4, dated May 26, 2011, or earlier versions. (d) Reason This AD was prompted by fuel leaks caused by damage to the fan case low-pressure (LP) fuel tube. We are issuing this AD to prevent failure of the fan case LP fuel tube, which could lead to an in- flight engine shutdown, loss of thrust control, and damage to the airplane. (e) Actions and Compliance Comply with this AD within the compliance times specified, unless already done. (1) Within 800 flight hours (FH) after the effective date of this AD, and thereafter at intervals not to exceed 800 FH, inspect the clip at the uppermost fan case LP fuel tube clip position, CP4881, and support bracket, P/N FW26692. Use Accomplishment Instructions, paragraph 3.A, of RR Non-Modification Service Bulletin (NMSB) No. RB.211-73-AH837, initial issue, dated September 9, 2014, or paragraph 3.A. or 3.B. of RR NMSB No. RB.211-73-AH522, Revision 2, dated July 18, 2014, or earlier versions, to do your inspection. (i) If the clip at the uppermost clip position, CP4881, fails inspection, replace the clip with a part eligible for installation and, before further flight, inspect the fan case LP fuel tube, P/N FW53576, for fretting, and clips for cracks or failure, according to Accomplishment Instructions, paragraph 3.A. of RR NMSB No. RB.211- 73-AH837, initial issue, dated September 9, 2014, or paragraph 3.A. or 3.B. of RR NMSB No. RB.211-73-AH522, Revision 2, dated July 18, 2014, or earlier versions. (ii) If the support bracket, P/N FW26692, fails inspection, replace the bracket before further flight with a part eligible for installation and inspect the fan case LP fuel tube, P/N FW53576, and clips for cracks or failure. (2) Within 4,000 FH since new or 800 FH, whichever occurs later, after the effective date of this AD, and thereafter at intervals not to exceed 4,000 FH, inspect the fan case LP fuel tube, P/N FW53576, and clips, and the fuel oil heat exchanger (FOHE) mounts and hardware, for damage, wear, or fretting. Use paragraph 3.A. or 3.B., Accomplishment Instructions, of RR Alert NMSB No. RB.211-73-AH522, Revision 2, dated July 18, 2014, or earlier versions, to do the inspection. (i) If the fan case LP fuel tube, P/N FW53576, fails inspection, before further flight, replace the fuel tube and clips with parts eligible for installation. (ii) If any FOHE mount or hardware shows signs of damage, wear, or fretting, replace the damaged part before further flight with a part eligible for installation. (3) At each shop visit after the effective date of this AD, inspect the fan case LP fuel tubes, P/Ns FW26589, FW36335, FW26587, FW53577, and FW53576, and clips, and the FOHE mounts and hardware, for damage, wear, or fretting. Use paragraphs 3.B.(1) and 3.B.(2) of RR Alert NMSB No. RB.211-73-AH522, Revision 2, dated July 18, 2014, or earlier versions, to do the inspection. (i) If any fan case LP fuel tube fails inspection, replace the fuel tube and clips before further flight with parts eligible for installation. (ii) If any FOHE mount or hardware shows signs of damage, wear, or fretting, replace the damaged part before further flight with a part eligible for installation. (4) If you replace any fan case LP fuel tube, clip, or FOHE mount or hardware as a result [[Page 22140]] of the inspections of paragraphs (e)(1), (e)(2), or (e)(3) of this AD, you must still continue to perform the repetitive inspections of paragraphs (e)(1), (e)(2), and (e)(3) of this AD. (5) Any reports requested in the NMSB accomplishment instructions referenced in paragraphs (e)(1), (e)(2), and (e)(3) of this AD are not required by this AD. (f) Credit for Previous Actions If, before the effective date of this AD, you performed the inspections and corrective actions required by paragraph (e)(2) of this AD using RR NMSB No. RB.211-73-G848, Revision 3, dated June 12, 2014, or earlier versions, you met the initial inspection requirements of paragraph (e)(2) of this AD. (g) Definitions For the purposes of this AD: (1) An ``engine shop visit'' is the induction of an engine into the shop for maintenance involving the separation of pairs of major mating engine flanges, except that the separation of engine flanges solely for the purposes of transportation without subsequent engine maintenance is not an engine shop visit. (2) The fan case LP fuel tubes and clips, and the FOHE mounts and hardware, are eligible for installation if they have passed the inspection requirements of paragraphs (e)(1), (e)(2), and (e)(3) of this AD. (h) Alternative Methods of Compliance (AMOCs) The Manager, Engine Certification Office, FAA, may approve AMOCs to this AD. Use the procedures found in 14 CFR 39.19 to make your request. You may email your request to: ANE-AD-AMOC@faa.gov. (i) Related Information (1) For more information about this AD, contact Wego Wang, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7134; fax: 781-238-7199; email: wego.wang@faa.gov. (2) Refer to MCAI European Aviation Safety Agency AD 2014- 0243R1, dated December 10, 2014 for more information. You may examine the MCAI in the AD docket on the Internet at http://www.regulations.gov/#!docketDetail;D=FAA-2014-0363. (3) RR Alert NMSB No. RB.211-73-AH522, Revision 2, dated July 18, 2014, and earlier versions; RR NMSB No. RB.211-73-AH837, initial issue, dated September 9, 2014; and RR NMSB No. RB.211-73-G848, Revision 3, dated June 12, 2014, and earlier versions; which are not incorporated by reference in this AD, can be obtained from Rolls- Royce plc, using the contact information in paragraph (i)(4) of this proposed AD. (4) 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: http://www.rolls-royce.com/contact/civil_team.jsp; Internet: https://www.aeromanager.com. (5) You may view this service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7125. Issued in Burlington, Massachusetts, on April 7, 2015. Ann C. Mollica, Acting Directorate Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2015-09001 Filed 4-20-15; 8:45 am] BILLING CODE 4910-13-P
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$28,765 per engine. Based on these PART 39—AIRWORTHINESS (g) Related Information
figures, we estimate the cost of this DIRECTIVES (1) For more information about this AD,
proposed AD on U.S. operators to be contact Robert Green, Aerospace Engineer,
$34,205. ■ 1. The authority citation for part 39 Engine Certification Office, FAA, Engine &
Propeller Directorate, 12 New England
Authority for This Rulemaking continues to read as follows: Executive Park, Burlington, MA 01803;
Authority: 49 U.S.C. 106(g), 40113, 44701. phone: 781–238–7754; fax: 781–238–7199;
Title 49 of the United States Code
email: robert.green@faa.gov.
specifies the FAA’s authority to issue § 39.13 [Amended] (2) Refer to MCAI European Aviation
rules on aviation safety. Subtitle I, Safety Agency AD 2015–0015, dated January
section 106, describes the authority of ■ 2. The FAA amends § 39.13 by adding 30, 2015, for more information. You may
the FAA Administrator. ‘‘Subtitle VII: the following new airworthiness examine the MCAI in the AD docket on the
Aviation Programs,’’ describes in more directive (AD): Internet at http://www.regulations.gov by
detail the scope of the Agency’s GE Aviation Czech s.r.o. (Type Certificate searching for and locating it in Docket No.
authority. previously held by WALTER Engines FAA–2015–0625.
a.s., Walter a.s., and MOTORLET a.s.): (3) GE Aviation Czech s.r.o. Alert Service
We are issuing this rulemaking under
Docket No. FAA–2015–0625; Directorate Bulletin (ASB) No. M601E–11/30, dated
the authority described in ‘‘Subtitle VII, December 23, 2014, which is co-published as
Part A, Subpart III, Section 44701: Identifier 2015–NE–09–AD.
one document with M601D–1/31, M601Z/29,
General requirements.’’ Under that (a) Comments Due Date and M601T/24, and ASB No. M601E–11/31,
section, Congress charges the FAA with We must receive comments by June 22, M601E–11A/18, M601F/28, dated December
promoting safe flight of civil aircraft in 2015. 23, 2014, which is co-published as one
air commerce by prescribing regulations document with M601D–1/32, M601Z/30,
for practices, methods, and procedures (b) Affected ADs M601E/61, M601T/25, M601FS/12, M601F–
the Administrator finds necessary for None. 22/25, M601F–32/23, and M601E–21/28, are
not incorporated by reference in this AD. The
safety in air commerce. This regulation (c) Applicability ASBs can be obtained from GE Aviation
is within the scope of that authority Czech s.r.o. using the contact information in
This AD applies to certain serial number
because it addresses an unsafe condition (S/N) GE Aviation Czech s.r.o. M601E–11, paragraph (g)(4) of this proposed AD.
that is likely to exist or develop on M601E–11A, and M601F turboprop engine (4) For service information identified in
products identified in this rulemaking models, with gas generator turbine (GGT) this proposed AD, contact GE Aviation Czech
action. blade, part number (P/N) M601–3372.6 or s.r.o., Beranových 65, 199 02 Praha 9—
M601–3372.51, installed, as follows: Letňany, Czech Republic; phone: +420 222
Regulatory Findings 538 111; fax: +420 222 538 222.
(1) Model M601E–11: S/Ns 862001,
We determined that this proposed AD 863008, 894018, 034005, 034006, 034007, (5) You may view this service information
would not have federalism implications 034008, 041003, and 042002. at the FAA, Engine & Propeller Directorate,
(2) Model M601E–11A: S/Ns 042003, 12 New England Executive Park, Burlington,
under Executive Order 13132. This MA. For information on the availability of
proposed AD would not have a 042004, 044001, 044002, and 961001.
(3) Model M601F: S/Ns 024001, 002001, this material at the FAA, call 781–238–7125.
substantial direct effect on the States, on
003001, 024001, 934001, 934002, 961001. Issued in Burlington, Massachusetts, on
the relationship between the national
April 7, 2015.
Government and the States, or on the (d) Reason
distribution of power and Ann C. Mollica,
This AD was prompted by the
responsibilities among the various Acting Directorate Manager, Engine &
determination that certain GGT blades are
levels of government. Propeller Directorate, Aircraft Certification
susceptible to blade failure. These blades are
Service.
For the reasons discussed above, I identified as blade P/Ns M601–3372.6 and
M601–3372.51, and are installed on an [FR Doc. 2015–09002 Filed 4–20–15; 8:45 am]
certify this proposed regulation:
(1) Is not a ‘‘significant regulatory engine S/N identified in paragraph (c) of this BILLING CODE 4910–13–P
action’’ under Executive Order 12866, AD. We are issuing this AD to prevent GGT
blade failure, which could lead to engine
(2) Is not a ‘‘significant rule’’ under failure and loss of the airplane. DEPARTMENT OF TRANSPORTATION
the DOT Regulatory Policies and
Procedures (44 FR 11034, February 26, (e) Actions and Compliance Federal Aviation Administration
1979), Comply with this AD within the
(3) Will not affect intrastate aviation compliance times specified, unless already 14 CFR Part 39
in Alaska to the extent that it justifies done. After the effective date of this AD:
(1) Do not return to service any affected [Docket No. FAA–2014–0363; Directorate
making a regulatory distinction, and
engine with GGT blade, P/N M601–3372.6 or Identifier 2014–NE–08–AD]
(4) Will not have a significant
M601–3372.51, installed, after 300 hours RIN 2120–AA64
economic impact, positive or negative, time in service or six months, whichever
on a substantial number of small entities occurs first, after the effective date of this
under the criteria of the Regulatory Airworthiness Directives; Rolls-Royce
AD.
Flexibility Act. plc Turbofan Engines
(2) If the affected engines are subsequently
disassembled or overhauled, the non-shot AGENCY: Federal Aviation
List of Subjects in 14 CFR Part 39 peened GGT blades, P/N M601–3372.6 or Administration (FAA), DOT.
Air transportation, Aircraft, Aviation M601–3372.51, are not eligible for
ACTION: Supplemental notice of
installation in any other engine after removal.
tkelley on DSK3SPTVN1PROD with PROPOSALS
safety, Incorporation by reference, proposed rulemaking (NPRM);
Safety. (f) Alternative Methods of Compliance reopening of comment period.
The Proposed Amendment (AMOCs)
The Manager, Engine Certification Office, SUMMARY: We are revising an earlier
Accordingly, under the authority FAA, may approve AMOCs for this AD. Use proposed airworthiness directive (AD)
delegated to me by the Administrator, the procedures found in 14 CFR 39.19 to for all Rolls-Royce plc (RR) RB211 Trent
the FAA proposes to amend 14 CFR part make your request. You may email your 768–60, 772–60, and 772B–60 turbofan
39 as follows: request to: ANE–AD–AMOC@faa.gov. engines. The NPRM proposed to require
VerDate Sep<11>2014 17:28 Apr 20, 2015 Jkt 235001 PO 00000 Frm 00002 Fmt 4702 Sfmt 4702 E:\FR\FM\21APP1.SGM 21APP1](https://thefederalregister.org/doc/80_FR_22213/page/1.svg)
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AD. We received no comments on the the States, on the relationship between tube, which could lead to an in-flight engine
NPRM (79 FR 37965, July 3, 2014). the national government and the States, shutdown, loss of thrust control, and damage
or on the distribution of power and to the airplane.
FAA’s Determination
responsibilities among the various (e) Actions and Compliance
We are proposing this SNPRM levels of government. Comply with this AD within the
because we evaluated all the relevant For the reasons discussed above, I compliance times specified, unless already
information and determined the unsafe certify this AD: done.
condition described previously is likely (1) Is not a ‘‘significant regulatory (1) Within 800 flight hours (FH) after the
to exist or develop in other products of action’’ under Executive Order 12866, effective date of this AD, and thereafter at
the same type design. Certain changes (2) Is not a ‘‘significant rule’’ under intervals not to exceed 800 FH, inspect the
described above expand the scope of the the DOT Regulatory Policies and clip at the uppermost fan case LP fuel tube
clip position, CP4881, and support bracket,
NPRM (79 FR 37965, July 3, 2014). As Procedures (44 FR 11034, February 26, P/N FW26692. Use Accomplishment
a result, we have determined that it is 1979), Instructions, paragraph 3.A, of RR Non-
necessary to reopen the comment period (3) Will not affect intrastate aviation Modification Service Bulletin (NMSB) No.
to provide additional opportunity for in Alaska to the extent that it justifies RB.211–73–AH837, initial issue, dated
the public to comment on this SNPRM. making a regulatory distinction, and September 9, 2014, or paragraph 3.A. or 3.B.
(4) Will not have a significant of RR NMSB No. RB.211–73–AH522,
Proposed Requirements of This SNPRM economic impact, positive or negative, Revision 2, dated July 18, 2014, or earlier
This SNPRM would require on a substantial number of small entities versions, to do your inspection.
accomplishing the actions specified in under the criteria of the Regulatory (i) If the clip at the uppermost clip
position, CP4881, fails inspection, replace
the NPRM, except as discussed in the Flexibility Act. the clip with a part eligible for installation
Actions Since Previous NPRM was and, before further flight, inspect the fan case
List of Subjects in 14 CFR Part 39
Issued paragraph. LP fuel tube, P/N FW53576, for fretting, and
Air transportation, Aircraft, Aviation clips for cracks or failure, according to
Costs of Compliance safety, Incorporation by reference, Accomplishment Instructions, paragraph 3.A.
We estimate that this proposed AD Safety. of RR NMSB No. RB.211–73–AH837, initial
affects about 50 engines installed on issue, dated September 9, 2014, or paragraph
Adoption of the Amendment 3.A. or 3.B. of RR NMSB No. RB.211–73–
airplanes of U.S. registry. We also
Accordingly, under the authority AH522, Revision 2, dated July 18, 2014, or
estimate that it would take about 6
delegated to me by the Administrator, earlier versions.
hours per engine to comply with this (ii) If the support bracket, P/N FW26692,
proposed AD. The average labor rate is the FAA amends 14 CFR part 39 as fails inspection, replace the bracket before
$85 per hour. We also estimate that 25 follows: further flight with a part eligible for
of the engines will fail the inspection installation and inspect the fan case LP fuel
proposed by this AD. Required parts PART 39—AIRWORTHINESS tube, P/N FW53576, and clips for cracks or
cost about $4,031 per engine. Based on DIRECTIVES failure.
these figures, we estimate the cost of (2) Within 4,000 FH since new or 800 FH,
■ 1. The authority citation for part 39 whichever occurs later, after the effective
this proposed AD on U.S. operators to continues to read as follows: date of this AD, and thereafter at intervals not
be $126,275. to exceed 4,000 FH, inspect the fan case LP
Authority: 49 U.S.C. 106(g), 40113, 44701.
Authority for This Rulemaking fuel tube, P/N FW53576, and clips, and the
§ 39.13 [Amended] fuel oil heat exchanger (FOHE) mounts and
Title 49 of the United States Code hardware, for damage, wear, or fretting. Use
specifies the FAA’s authority to issue ■ 2. The FAA amends § 39.13 by adding
paragraph 3.A. or 3.B., Accomplishment
rules on aviation safety. Subtitle I, the following new airworthiness Instructions, of RR Alert NMSB No. RB.211–
section 106, describes the authority of directive (AD): 73–AH522, Revision 2, dated July 18, 2014,
the FAA Administrator. ‘‘Subtitle VII: Rolls-Royce plc: Docket No. FAA–2014– or earlier versions, to do the inspection.
Aviation Programs,’’ describes in more 0363; Directorate Identifier 2014–NE– (i) If the fan case LP fuel tube, P/N
08–AD. FW53576, fails inspection, before further
detail the scope of the Agency’s flight, replace the fuel tube and clips with
authority. (a) Comments Due Date parts eligible for installation.
We are issuing this rulemaking under We must receive comments by June 22, (ii) If any FOHE mount or hardware shows
the authority described in ‘‘Subtitle VII, 2015. signs of damage, wear, or fretting, replace the
Part A, Subpart III, Section 44701: damaged part before further flight with a part
General requirements.’’ Under that (b) Affected ADs eligible for installation.
section, Congress charges the FAA with None. (3) At each shop visit after the effective
promoting safe flight of civil aircraft in date of this AD, inspect the fan case LP fuel
(c) Applicability tubes, P/Ns FW26589, FW36335, FW26587,
air commerce by prescribing regulations
This AD applies to all Rolls-Royce plc (RR) FW53577, and FW53576, and clips, and the
for practices, methods, and procedures RB211 Trent 768–60, 772–60, and 772B–60 FOHE mounts and hardware, for damage,
the Administrator finds necessary for turbofan engines, if fitted with fuel tube, part wear, or fretting. Use paragraphs 3.B.(1) and
safety in air commerce. This regulation number (P/N) FW53576, which was 3.B.(2) of RR Alert NMSB No. RB.211–73–
is within the scope of that authority incorporated through RR production AH522, Revision 2, dated July 18, 2014, or
because it addresses an unsafe condition modification 73–F343 or which were earlier versions, to do the inspection.
that is likely to exist or develop on modified in service in accordance with RR (i) If any fan case LP fuel tube fails
inspection, replace the fuel tube and clips
tkelley on DSK3SPTVN1PROD with PROPOSALS
products identified in this rulemaking Service Bulletin (SB) No. RB.211–73–F343,
action. Revision 4, dated May 26, 2011, or earlier before further flight with parts eligible for
versions. installation.
Regulatory Findings (ii) If any FOHE mount or hardware shows
(d) Reason signs of damage, wear, or fretting, replace the
We determined that this AD will not This AD was prompted by fuel leaks damaged part before further flight with a part
have federalism implications under caused by damage to the fan case low- eligible for installation.
Executive Order 13132. This AD will pressure (LP) fuel tube. We are issuing this (4) If you replace any fan case LP fuel tube,
not have a substantial direct effect on AD to prevent failure of the fan case LP fuel clip, or FOHE mount or hardware as a result
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![22140 Federal Register / Vol. 80, No. 76 / Tuesday, April 21, 2015 / Proposed Rules
of the inspections of paragraphs (e)(1), (e)(2), 12 New England Executive Park, Burlington, CT 06108; phone: 860–565–8770; fax:
or (e)(3) of this AD, you must still continue MA. For information on the availability of 860–565–4503. You may view this
to perform the repetitive inspections of this material at the FAA, call 781–238–7125. service information at the FAA, Engine
paragraphs (e)(1), (e)(2), and (e)(3) of this AD.
Issued in Burlington, Massachusetts, on & Propeller Directorate, 12 New England
(5) Any reports requested in the NMSB
April 7, 2015. Executive Park, Burlington, MA. For
accomplishment instructions referenced in
paragraphs (e)(1), (e)(2), and (e)(3) of this AD Ann C. Mollica, information on the availability of this
are not required by this AD. Acting Directorate Manager, Engine & material at the FAA, call 781–238–7125.
Propeller Directorate, Aircraft Certification
(f) Credit for Previous Actions Service. Examining the AD Docket
If, before the effective date of this AD, you [FR Doc. 2015–09001 Filed 4–20–15; 8:45 am] You may examine the AD docket on
performed the inspections and corrective the Internet at http://
BILLING CODE 4910–13–P
actions required by paragraph (e)(2) of this
www.regulations.gov by searching for
AD using RR NMSB No. RB.211–73–G848,
Revision 3, dated June 12, 2014, or earlier and locating Docket No. FAA–2014–
versions, you met the initial inspection DEPARTMENT OF TRANSPORTATION 1130; or in person at the Docket
requirements of paragraph (e)(2) of this AD. Management Facility between 9 a.m.
Federal Aviation Administration and 5 p.m., Monday through Friday,
(g) Definitions
except Federal holidays. The AD docket
For the purposes of this AD: 14 CFR Part 39 contains this proposed AD, the
(1) An ‘‘engine shop visit’’ is the induction
[Docket No. FAA–2014–1130; Directorate regulatory evaluation, any comments
of an engine into the shop for maintenance
involving the separation of pairs of major Identifier 2015–NE–04–AD] received, and other information. The
mating engine flanges, except that the street address for the Docket Office
RIN 2120–AA64
separation of engine flanges solely for the (phone: 800–647–5527) is in the
purposes of transportation without ADDRESSES section. Comments will be
Airworthiness Directives; Pratt &
subsequent engine maintenance is not an
Whitney Turbofan Engines available in the AD docket shortly after
engine shop visit. receipt.
(2) The fan case LP fuel tubes and clips, AGENCY: Federal Aviation FOR FURTHER INFORMATION CONTACT:
and the FOHE mounts and hardware, are Administration (FAA), DOT.
eligible for installation if they have passed Katheryn Malatek, Aerospace Engineer,
the inspection requirements of paragraphs ACTION: Notice of proposed rulemaking Engine Certification Office, FAA, Engine
(e)(1), (e)(2), and (e)(3) of this AD. (NPRM). & Propeller Directorate, 12 New England
(h) Alternative Methods of Compliance
Executive Park, Burlington, MA 01803;
SUMMARY: We propose to adopt a new phone: 781–238–7747; fax: 781–238–
(AMOCs) airworthiness directive (AD) for all Pratt 7199; email: katheryn.malatek@faa.gov.
The Manager, Engine Certification Office, & Whitney (PW) PW4164–1D, PW4168–
FAA, may approve AMOCs to this AD. Use SUPPLEMENTARY INFORMATION:
1D, PW4168A–1D and PW4170 engines,
the procedures found in 14 CFR 39.19 to and certain PW4164, PW4168, and Comments Invited
make your request. You may email your
PW4168A turbofan engines. This
request to: ANE-AD-AMOC@faa.gov. We invite you to send any written
proposed AD was prompted by fuel
(i) Related Information relevant data, views, or arguments about
nozzle-to-fuel supply manifold interface
this NPRM. Send your comments to an
(1) For more information about this AD, fuel leaks. This proposed AD would
address listed under the ADDRESSES
contact Wego Wang, Aerospace Engineer, require inspecting fuel nozzles for signs
Engine Certification Office, FAA, Engine & section. Include ‘‘Docket No. FAA–
of leakage, replacing hardware as
Propeller Directorate, 12 New England 2014–1130; Directorate Identifier 2015–
required, and torqueing to specified
Executive Park, Burlington, MA 01803; NE–04–AD’’ at the beginning of your
requirement. We are proposing this AD
phone: 781–238–7134; fax: 781–238–7199; comments. We specifically invite
email: wego.wang@faa.gov. to prevent fuel leaks which could result
comments on the overall regulatory,
(2) Refer to MCAI European Aviation in engine fire and damage to the
economic, environmental, and energy
Safety Agency AD 2014–0243R1, dated airplane.
aspects of this NPRM. We will consider
December 10, 2014 for more information. DATES: We must receive comments on
You may examine the MCAI in the AD
all comments received by the closing
this proposed AD by June 22, 2015. date and may amend this NPRM
docket on the Internet at http://
www.regulations.gov/#!docketDetail;D=FAA- ADDRESSES: You may send comments, because of those comments.
2014-0363. using the procedures found in 14 CFR We will post all comments we
(3) RR Alert NMSB No. RB.211–73–AH522, 11.43 and 11.45, by any of the following receive, without change, to http://
Revision 2, dated July 18, 2014, and earlier methods: www.regulations.gov, including any
versions; RR NMSB No. RB.211–73–AH837, • Federal eRulemaking Portal: Go to personal information you provide. We
initial issue, dated September 9, 2014; and http://www.regulations.gov. Follow the will also post a report summarizing each
RR NMSB No. RB.211–73–G848, Revision 3,
dated June 12, 2014, and earlier versions;
instructions for submitting comments. substantive verbal contact we receive
which are not incorporated by reference in • Fax: 202–493–2251. about this NPRM.
this AD, can be obtained from Rolls-Royce • Mail: U.S. Department of
Discussion
plc, using the contact information in Transportation, Docket Operations, M–
paragraph (i)(4) of this proposed AD. 30, West Building Ground Floor, Room We received reports of four fuel
(4) For service information identified in W12–140, 1200 New Jersey Avenue SE., nozzle leaks in service and an
this proposed AD, contact Rolls-Royce plc,
tkelley on DSK3SPTVN1PROD with PROPOSALS
Washington, DC 20590. additional six fuel nozzle leaks found
Corporate Communications, P.O. Box 31, • Hand Delivery: Deliver to Mail during shop visits. The root cause is
Derby, England, DE24 8BJ; phone: 011–44– address above between 9 a.m. and 5 inadequate torque of the fuel nozzle-to-
1332–242424; fax: 011–44–1332–249936;
email: http://www.rolls-royce.com/contact/ p.m., Monday through Friday, except fuel supply manifold B-nuts for the
civil_team.jsp; Internet: https:// Federal holidays. temperatures that the fuel nozzles
www.aeromanager.com. For service information identified in experience. This condition, if not
(5) You may view this service information this proposed AD, contact Pratt & corrected, could result in engine fire
at the FAA, Engine & Propeller Directorate, Whitney, 400 Main St., East Hartford, and damage to the airplane.
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Document Created: 2015-12-16 08:33:43
Document Modified: 2015-12-16 08:33:43
| Category | Regulatory Information | |
| Collection | Federal Register | |
| sudoc Class | AE 2.7: GS 4.107: AE 2.106: | |
| Publisher | Office of the Federal Register, National Archives and Records Administration | |
| Section | Proposed Rules | |
| Action | Supplemental notice of proposed rulemaking (NPRM); reopening of comment period. | |
| Dates | We must receive comments by June 22, 2015. | |
| Contact | Wego Wang, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7134; fax: 781-238-7199; email: [email protected] | |
| FR Citation | 80 FR 22137 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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