81 FR 75762 - Airworthiness Directives; Rolls-Royce plc Turbofan Engines
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 81, Issue 211 (November 1, 2016)
Federal Aviation Administration
Federal Register Volume 81, Issue 211 (November 1, 2016)
| Page Range | 75762-75764 | |
| FR Document | 2016-26334 |
[Federal Register Volume 81, Number 211 (Tuesday, November 1, 2016)] [Proposed Rules] [Pages 75762-75764] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2016-26334] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2012-1327; Directorate Identifier 2012-NE-47-AD] RIN 2120-AA64 Airworthiness Directives; Rolls-Royce plc Turbofan Engines AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). ----------------------------------------------------------------------- SUMMARY: We propose to supersede airworthiness directive (AD) 2014-16- [[Page 75763]] 10 that applies to all Rolls-Royce plc (RR) RB211 Trent 768-60, 772-60, and 772B-60 turbofan engines. AD 2014-16-10 requires initial and repetitive ultrasonic inspections (UIs) of the affected low-pressure (LP) compressor blades. Since we issued AD 2014-16-10, RR issued revised service information to reduce the inspection threshold. This proposed AD would retain the UIs in AD 2014-16-10 while applying the revised inspection threshold. We are proposing this AD to prevent LP compressor blade airfoil separations, damage to the engine, and damage to the airplane. DATES: We must receive comments on this proposed AD by December 16, 2016. 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, P.O. Box 31, Derby DE24 8BJ, UK; phone: 44 0 1332 242424; fax: 44 0 1332 249936. You may view this service information at the FAA, Engine & Propeller Directorate, 1200 District Avenue, 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-2012- 1327; 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, 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: Robert Green, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7754; 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 NPRM. Send your comments to an address listed under the ADDRESSES section. Include ``Docket No. FAA-2012-1327; Directorate Identifier 2012-NE-47-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 On August 1, 2014, we issued AD 2014-16-10, Amendment 39-17934 (79 FR 48961, August 19, 2014), (``AD 2014-16-10'') for all RR RB211 Trent 768-60, 772-60, and 772B-60 turbofan engines. AD 2014-16-10 requires initial and repetitive UIs of the affected LP compressor blades. AD 2014-16-10 resulted from LP compressor blade partial airfoil blade release events. We issued AD 2014-16-10 to prevent LP compressor blade airfoil separations, damage to the engine, and damage to the airplane. Actions Since AD 2014-16-10 Was Issued Since we issued AD 2014-16-10, RR issued Alert Non-Modification Service Bulletin (NMSB) RB.211-72-AH465, Revision 2, dated May 11, 2016. The Alert NMSB reduced the inspection threshold for UI of the LP compressor blades. Also since we issued AD 2014-16-10, the European Aviation Safety Agency (EASA) issued a correction to AD 2016-0141, dated July 20, 2016, requiring the revised inspection threshold. Related Service Information Under 1 CFR Part 51 RR has issued Alert NMSB RB.211-72-AH465, Revision 2, dated May 11, 2016. The NMSB describes procedures for performing a UI of the LP compressor blades. 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 We are proposing this AD 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. Proposed AD Requirements This proposed AD would require initial and repetitive UIs of the affected LP compressor blades. This proposed AD would require conducting the UIs at a reduced inspection threshold. Costs of Compliance We estimate that this proposed AD affects 56 engines installed on airplanes of U.S. registry. We also estimate that it would take about 40 hours per engine to comply with this proposed AD. The average labor rate is $85 per hour. Based on these figures, we estimate the cost of this proposed AD on U.S. operators to be $190,400. 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 have 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 that the proposed regulation: [[Page 75764]] (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. 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 removing airworthiness directive (AD) 2014-16-10, Amendment 39-17934 (79 FR 48961, August 19, 2014), and adding the following new AD: Rolls-Royce plc: Docket No. FAA-2012-1327; Directorate Identifier 2012-NE-47-AD. (a) Comments Due Date We must receive comments by December 16, 2016. (b) Affected ADs This AD supersedes AD 2014-16-10, Amendment 39-17934 (79 FR 48961, August 19, 2014). (c) Applicability This AD applies to Rolls-Royce plc (RR) RB211 Trent 768-60, 772- 60, and 772B-60 turbofan engines, with low-pressure (LP) compressor blade, part number (P/N) FK23411, FK25441, FK25968, FW11901, FW15393, FW23643, FW23741, FW23744, KH23403, or KH23404, installed. (d) Unsafe Condition This AD was prompted by LP compressor blade partial airfoil release events. We are issuing this AD to prevent LP compressor blade airfoil separations, damage to the engine, and damage to the airplane. (e) Compliance Comply with this AD within the compliance times specified, unless already done. (1) Ultrasonic Inspection (UI) of LP Compressor Blade (i) After the effective date of this AD, for LP compressor blades that have accumulated less than 1,800 cycles since new (CSN) or cycles since last inspection (CSLI), perform a UI of each LP compressor blade before the blade exceeds 2,400 CSN or CSLI. Repeat the UI of the blade before exceeding 2,400 CSLI. (ii) For any LP compressor blade that exceeds 1,800 CSN on the effective date of this AD, inspect the blade before exceeding 600 flight cycles after the effective date of this AD or before exceeding 3,600 CSN, whichever occurs first. Thereafter, perform the repetitive inspections before exceeding 2,400 CSLI. (iii) For any blade that exceeds 2,200 CSLI on September 23, 2014 (the effective date of AD 2014-16-10), inspect the blade before exceeding 3,000 CSLI or before further flight, whichever occurs later. Thereafter, perform the repetitive inspections before exceeding 2,400 CSLI. (iv) Use paragraph 3, excluding subparagraphs 3.C.(2)(b), 3.D.(2) and 3.G, of RR Alert Non-Modification Service Bulletin (NMSB) RB.211-72-AH465, Revision 2, dated May 11, 2016, to perform the inspections required by this AD. (2) Use of Replacement Blades (i) After the effective date of this AD, LP compressor blade, P/ N FK23411, FK25441, FK25968, FW11901, FW15393, FW23643, FW23741, FW23744, KH23403, or KH23404, that has accumulated at least 2,400 CSN or CSLI is eligible for installation if the blade has passed the UI required by this AD. (ii) Reserved. (f) Credit for Previous Actions You may take credit for the UI required by paragraph (e) of this AD, if you performed the UI before the effective date of this AD using RR NMSB No. RB.211-72-G702, dated May 23, 2011; or RR NMSB No. RB.211-72-G872, Revision 2, dated March 8, 2013, or earlier revisions; or RR NMSB No. RB.211-72-H311, dated March 8, 2013; or the Engine Manual E-Trent-1RR, Task 72-31-11-200-806. (g) Alternative Methods of Compliance (AMOCs) The Manager, Engine Certification Office, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. You may email your request to: [email protected]. (h) Related Information (1) For more information about this AD, contact Robert Green, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7754; fax: 781-238-7199; email: [email protected]. (2) Refer to MCAI European Aviation Safety Agency AD 2016-0141, dated July 20, 2016, 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-2012-1327. (3) RR Alert NMSB RB.211-72-AH465, Revision 2, dated May 11, 2016, can be obtained from RR, using the contact information in paragraph (h)(4) of this AD. (4) For service information identified in this AD, contact Rolls-Royce plc, P.O. Box 31, Derby DE24 8BJ, UK; phone: 44 0 1332 242424; fax: 44 0 1332 249936. (5) You may view this service information at the FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7125. Issued in Burlington, Massachusetts, on October 26, 2016. Colleen M. D'Alessandro, Manager, Engine & Propeller Directorate, Aircraft Certification Service. [FR Doc. 2016-26334 Filed 10-31-16; 8:45 am] BILLING CODE 4910-13-P
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ESTIMATED COSTS
Cost Cost
Parts
Action Labor cost per on U.S.
cost product operators
Removal and replacement of the RDS as- 6 work-hours × $85 per hour = $510 ............. $37,000 $37,510 $300,080
sembly and RDS outer housing.
Authority for This Rulemaking The Proposed Amendment identified in Appendix A of CFM S/B No.
CFM56–5B S/B 72–0934, dated August 1,
Title 49 of the United States Code Accordingly, under the authority 2016.
specifies the FAA’s authority to issue delegated to me by the Administrator,
the FAA proposes to amend 14 CFR part (h) Alternative Methods of Compliance
rules on aviation safety. Subtitle I, (AMOCs)
section 106, describes the authority of 39 as follows:
The Manager, Engine Certification Office,
the FAA Administrator. Subtitle VII: FAA, may approve AMOCs for this AD. Use
PART 39—AIRWORTHINESS
Aviation Programs, describes in more the procedures found in 14 CFR 39.19 to
DIRECTIVES
detail the scope of the Agency’s make your request. You may email your
authority. ■ 1. The authority citation for part 39 request to: ANE-AD-AMOC@faa.gov.
We are issuing this rulemaking under continues to read as follows: (i) Related Information
the authority described in Subtitle VII, Authority: 49 U.S.C. 106(g), 40113, 44701. (1) For more information about this AD,
Part A, Subpart III, Section 44701: contact Kyle Gustafson, Aerospace Engineer,
‘‘General requirements.’’ Under that § 39.13 [Amended] Engine Certification Office, FAA, Engine &
section, Congress charges the FAA with ■ 2. The FAA amends § 39.13 by adding Propeller Directorate, 1200 District Avenue,
promoting safe flight of civil aircraft in the following new airworthiness Burlington, MA 01803; phone: 781–238–
air commerce by prescribing regulations directive (AD): 7183; fax: 781–238–7199; email:
for practices, methods, and procedures kyle.gustafson@faa.gov.
CFM International S.A.: Docket No. FAA– (2) CFM SB CFM56–5B S/B 72–0934, dated
the Administrator finds necessary for 2016–9128; Directorate Identifier 2016– August 1, 2016, can be obtained from CFM
safety in air commerce. This regulation NE–19–AD. using the contact information in paragraph
is within the scope of that authority (i)(3) of this proposed AD.
(a) Comments Due Date
because it addresses an unsafe condition (3) For service information identified in
that is likely to exist or develop on We must receive comments by December this AD, contact CFM International Inc.,
products identified in this rulemaking 16, 2016. Aviation Operations Center, 1 Neumann
action. (b) Affected ADs Way, M/D Room 285, Cincinnati, OH 45125;
phone: 877–432–3272; fax: 877–432–3329;
Regulatory Findings None. email: aviation.fleetsupport@ge.com.
(c) Applicability (4) You may view this service information
We determined that this proposed AD at the FAA, Engine & Propeller Directorate,
would not have federalism implications This AD applies to CFM International S.A.
1200 District Avenue, Burlington, MA. For
under Executive Order 13132. This (CFM) CFM56–5B series, CFM56–5B/P series,
information on the availability of this
CFM56–5B/3 series, CFM56–5B/2P series,
proposed AD would not have a CFM56–5B/P1 series, CFM56–5B/2P1 series,
material at the FAA, call 781–238–7125.
substantial direct effect on the States, on and CFM56–5B/3B1 series engines with a Issued in Burlington, Massachusetts, on
the relationship between the national radial drive shaft (RDS) serial number (S/N) October 21, 2016.
Government and the States, or on the listed in Appendix A of CFM Service Colleen M. D’Alessandro,
distribution of power and Bulletin (SB) CFM56–5B S/B 72–0934, dated Manager, Engine & Propeller Directorate,
responsibilities among the various August 1, 2016, installed. Aircraft Certification Service.
levels of government. (d) Subject [FR Doc. 2016–26010 Filed 10–31–16; 8:45 am]
For the reasons discussed above, I Air Transport Association (ATA) of BILLING CODE 4910–13–P
certify this proposed regulation: America Code 83, Accessory Gearboxes.
(1) Is not a ‘‘significant regulatory (e) Unsafe Condition
action’’ under Executive Order 12866, DEPARTMENT OF TRANSPORTATION
This AD was prompted by reports of the
(2) Is not a ‘‘significant rule’’ under failure of the RDS on CFM CFM56–5B
the DOT Regulatory Policies and Federal Aviation Administration
engines. We are issuing this AD to prevent
Procedures (44 FR 11034, February 26, failure of the RDS, which could lead to 14 CFR Part 39
1979), failure of one or more engines, loss of thrust
(3) Will not affect intrastate aviation control, and damage to the airplane. [Docket No. FAA–2012–1327; Directorate
in Alaska to the extent that it justifies Identifier 2012–NE–47–AD]
(f) Compliance
making a regulatory distinction, and Comply with this AD within the RIN 2120–AA64
(4) Will not have a significant compliance times specified, unless already
asabaliauskas on DSK3SPTVN1PROD with PROPOSALS
economic impact, positive or negative, done. Airworthiness Directives; Rolls-Royce
on a substantial number of small entities Within 6 months after the effective date of plc Turbofan Engines
under the criteria of the Regulatory this AD, remove the RDS assembly, part
AGENCY: Federal Aviation
Flexibility Act. number (P/N) 305–165–101–0, and RDS outer
housing, P/N 301–295–106–0, and replace Administration (FAA), DOT.
List of Subjects in 14 CFR Part 39 with parts eligible for installation. ACTION: Notice of proposed rulemaking
(NPRM).
Air transportation, Aircraft, Aviation (g) Installation Prohibition
safety, Incorporation by reference, After the effective date of this AD, do not SUMMARY: We propose to supersede
Safety. install on any engine an RDS with an S/N airworthiness directive (AD) 2014–16–
VerDate Sep<11>2014 18:29 Oct 31, 2016 Jkt 241001 PO 00000 Frm 00021 Fmt 4702 Sfmt 4702 E:\FR\FM\01NOP1.SGM 01NOP1](https://thefederalregister.org/doc/81_FR_75973/page/1.svg)
![75764 Federal Register / Vol. 81, No. 211 / Tuesday, November 1, 2016 / Proposed Rules
(1) Is not a ‘‘significant regulatory (1) Ultrasonic Inspection (UI) of LP obtained from RR, using the contact
action’’ under Executive Order 12866, Compressor Blade information in paragraph (h)(4) of this AD.
(2) Is not a ‘‘significant rule’’ under (i) After the effective date of this AD, for (4) For service information identified in
LP compressor blades that have accumulated this AD, contact Rolls-Royce plc, P.O. Box
the DOT Regulatory Policies and 31, Derby DE24 8BJ, UK; phone: 44 0 1332
less than 1,800 cycles since new (CSN) or
Procedures (44 FR 11034, February 26, cycles since last inspection (CSLI), perform a 242424; fax: 44 0 1332 249936.
1979), UI of each LP compressor blade before the (5) You may view this service information
(3) Will not affect intrastate aviation blade exceeds 2,400 CSN or CSLI. Repeat the at the FAA, Engine & Propeller Directorate,
in Alaska to the extent that it justifies UI of the blade before exceeding 2,400 CSLI. 1200 District Avenue, Burlington, MA. For
making a regulatory distinction, and (ii) For any LP compressor blade that information on the availability of this
(4) Will not have a significant exceeds 1,800 CSN on the effective date of material at the FAA, call 781–238–7125.
economic impact, positive or negative, this AD, inspect the blade before exceeding
600 flight cycles after the effective date of Issued in Burlington, Massachusetts, on
on a substantial number of small entities October 26, 2016.
under the criteria of the Regulatory this AD or before exceeding 3,600 CSN,
whichever occurs first. Thereafter, perform Colleen M. D’Alessandro,
Flexibility Act. the repetitive inspections before exceeding Manager, Engine & Propeller Directorate,
List of Subjects in 14 CFR Part 39 2,400 CSLI. Aircraft Certification Service.
(iii) For any blade that exceeds 2,200 CSLI [FR Doc. 2016–26334 Filed 10–31–16; 8:45 am]
Air transportation, Aircraft, Aviation on September 23, 2014 (the effective date of
BILLING CODE 4910–13–P
safety, Incorporation by reference, AD 2014–16–10), inspect the blade before
Safety. exceeding 3,000 CSLI or before further flight,
whichever occurs later. Thereafter, perform
The Proposed Amendment the repetitive inspections before exceeding ENVIRONMENTAL PROTECTION
Accordingly, under the authority 2,400 CSLI. AGENCY
delegated to me by the Administrator, (iv) Use paragraph 3, excluding
the FAA proposes to amend 14 CFR part subparagraphs 3.C.(2)(b), 3.D.(2) and 3.G, of 40 CFR Part 52
RR Alert Non-Modification Service Bulletin
39 as follows: (NMSB) RB.211–72–AH465, Revision 2, [EPA–R09–OAR–2016–0244; FRL–9954–76–
dated May 11, 2016, to perform the Region 9]
PART 39—AIRWORTHINESS inspections required by this AD.
DIRECTIVES (2) Use of Replacement Blades Approval and Promulgation of
(i) After the effective date of this AD, LP Implementation Plans; State of
■ 1. The authority citation for part 39 compressor blade, P/N FK23411, FK25441, California; Coachella Valley;
continues to read as follows: FK25968, FW11901, FW15393, FW23643, Attainment Plan for 1997 8-Hour Ozone
Authority: 49 U.S.C. 106(g), 40113, 44701. FW23741, FW23744, KH23403, or KH23404, Standards
that has accumulated at least 2,400 CSN or
§ 39.13 [Amended] CSLI is eligible for installation if the blade AGENCY: Environmental Protection
■ 2. The FAA amends § 39.13 by has passed the UI required by this AD. Agency (EPA).
(ii) Reserved. ACTION: Proposed rule.
removing airworthiness directive (AD)
2014–16–10, Amendment 39–17934 (79 (f) Credit for Previous Actions SUMMARY: The Environmental Protection
FR 48961, August 19, 2014), and adding You may take credit for the UI required by Agency (EPA) is proposing to approve
the following new AD: paragraph (e) of this AD, if you performed the state implementation plan (SIP)
Rolls-Royce plc: Docket No. FAA–2012– UI before the effective date of this AD using revisions submitted by the State of
1327; Directorate Identifier 2012–NE– RR NMSB No. RB.211–72–G702, dated May
23, 2011; or RR NMSB No. RB.211–72–G872,
California to provide for attainment of
47–AD. the 1997 8-hour ozone national ambient
Revision 2, dated March 8, 2013, or earlier
(a) Comments Due Date revisions; or RR NMSB No. RB.211–72–H311, air quality standards in the Coachella
We must receive comments by December dated March 8, 2013; or the Engine Manual Valley nonattainment area. The EPA is
16, 2016. E-Trent-1RR, Task 72–31–11–200–806. proposing to find the emissions
(g) Alternative Methods of Compliance
inventories to be acceptable and to
(b) Affected ADs approve the reasonably available control
(AMOCs)
This AD supersedes AD 2014–16–10, measures, transportation control
Amendment 39–17934 (79 FR 48961, August The Manager, Engine Certification Office,
may approve AMOCs for this AD. Use the
strategies and measures, rate of progress
19, 2014). and reasonable further progress
procedures found in 14 CFR 39.19 to make
(c) Applicability your request. You may email your request to: demonstrations, attainment
This AD applies to Rolls-Royce plc (RR) ANE–AD–AMOC@faa.gov. demonstration, vehicle miles traveled
RB211 Trent 768–60, 772–60, and 772B–60 offset demonstration and the
(h) Related Information
turbofan engines, with low-pressure (LP) transportation conformity motor vehicle
compressor blade, part number (P/N) (1) For more information about this AD, emission budgets.
FK23411, FK25441, FK25968, FW11901, contact Robert Green, Aerospace Engineer,
DATES: Any comments must be
FW15393, FW23643, FW23741, FW23744, Engine Certification Office, FAA, Engine &
Propeller Directorate, 1200 District Avenue, submitted by December 1, 2016.
KH23403, or KH23404, installed.
Burlington, MA 01803; phone: 781–238– ADDRESSES: Submit your comments,
(d) Unsafe Condition 7754; fax: 781–238–7199; email: identified by Docket ID No. EPA–R09–
asabaliauskas on DSK3SPTVN1PROD with PROPOSALS
This AD was prompted by LP compressor robert.green@faa.gov. OAR–2016–0244 at http://
blade partial airfoil release events. We are (2) Refer to MCAI European Aviation www.regulations.gov, or via email to
issuing this AD to prevent LP compressor Safety Agency AD 2016–0141, dated July 20, kelly.thomasp@epa.gov. For comments
blade airfoil separations, damage to the 2016, for more information. You may
submitted at Regulations.gov, follow the
engine, and damage to the airplane. examine the MCAI in the AD docket on the
Internet at http://www.regulations.gov by online instructions for submitting
(e) Compliance searching for and locating it in Docket No. comments. Once submitted, comments
Comply with this AD within the FAA–2012–1327. cannot be edited or removed from
compliance times specified, unless already (3) RR Alert NMSB RB.211–72–AH465, Regulations.gov. For either manner of
done. Revision 2, dated May 11, 2016, can be submission, the EPA may publish any
VerDate Sep<11>2014 18:29 Oct 31, 2016 Jkt 241001 PO 00000 Frm 00023 Fmt 4702 Sfmt 4702 E:\FR\FM\01NOP1.SGM 01NOP1](https://thefederalregister.org/doc/81_FR_75973/page/3.svg)
Document Created: 2016-11-01 02:35:51
Document Modified: 2016-11-01 02:35:51
| 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 | Notice of proposed rulemaking (NPRM). | |
| Dates | We must receive comments on this proposed AD by December 16, 2016. | |
| Contact | Robert Green, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7754; fax: 781- 238-7199; email: [email protected] | |
| FR Citation | 81 FR 75762 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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