82 FR 41577 - Airworthiness Directives; General Electric Company Turbofan Engines
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 82, Issue 169 (September 1, 2017)
Federal Aviation Administration
Federal Register Volume 82, Issue 169 (September 1, 2017)
| Page Range | 41577-41579 | |
| FR Document | 2017-18571 |
[Federal Register Volume 82, Number 169 (Friday, September 1, 2017)] [Proposed Rules] [Pages 41577-41579] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2017-18571] ======================================================================= ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2017-0660; Product Identifier 2017-NE-21-AD] RIN 2120-AA64 Airworthiness Directives; General Electric Company Turbofan Engines AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). ----------------------------------------------------------------------- SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain General Electric Company (GE) GEnx-1B64/P2, -1B67/P2, -1B70/P2, -1B70/75/P2, -1B70C/P2, and -1B74/75/P2 turbofan engines. This proposed AD was prompted by a report of the failure of the high-pressure turbine (HPT) stage 1 blade retainer and subsequent in-flight shutdown of the engine. This proposed AD would require inspection of the HPT stage 1 blade retainer. We are proposing this AD to address the unsafe condition on these products. DATES: We must receive comments on this proposed AD by October 16, 2017. 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 General Electric Company, GE-Aviation, Room 285, 1 Neumann Way, Cincinnati, OH 45215, phone: 513-552-3272; fax: 513-552-3329; email: [email protected]. You may view this service information at the FAA, Engine and Propeller Standards Branch, Policy and Innovation Division, [[Page 41578]] 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-2017- 0660; 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 NPRM, the regulatory evaluation, any comments received, and other information. The street 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: Christopher McGuire, Aerospace Engineer, FAA, ECO Branch, Compliance and Airworthiness Division, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7120; 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-2017-0660; Directorate Identifier 2017-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 We learned of the failure of an HPT stage 1 blade retainer that resulted in an in-flight shutdown of the engine. This condition, if not corrected, could result in failure of one or more engines, loss of thrust control, and damage to the airplane. Related Service Information Under 1 CFR Part 51 We reviewed GE Service Bulletin (SB) GEnx-1B SB 72-0326 R02, dated August 16, 2017. The SB describes procedures for piece-part inspection of the HPT stage 1 blade retainer. 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 inspection of the HPT stage 1 blade retainer. Costs of Compliance We estimate that this proposed AD affects 11 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 ---------------------------------------------------------------------------------------------------------------- Inspection of the HPT stage 1 blade 1 work-hour x $85 per hour $0 $85 $935 retainer. = $85. ---------------------------------------------------------------------------------------------------------------- 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 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 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: [[Page 41579]] 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): General Electric Company: Docket No. FAA-2017-0660; Product Identifier 2017-NE-21-AD. (a) Comments Due Date We must receive comments by October 16, 2017. (b) Affected ADs None. (c) Applicability This AD applies to General Electric Company (GE) GEnx-1B64/P2, - 1B67/P2, -1B70/P2, -1B70/75/P2, -1B70C/P2, and -1B74/75/P2 turbofan engines, with a high-pressure turbine (HPT) stage 1 blade retainer, part number (P/N) 2445M91P01 or 2383M99P02, with a serial number listed in Planning Information, paragraph 1.A., of GE GEnx-1B Service Bulletin (SB) 72-0326 R02, dated August 16, 2017. (d) Subject Joint Aircraft System Component (JASC) Code 7250, Turbine Section. (e) Unsafe Condition This AD was prompted by a report of the failure of the high- pressure turbine (HPT) stage 1 blade retainer and subsequent in- flight shutdown of the engine. We are issuing this AD to prevent failure of the HPT stage 1 blade retainer. The unsafe condition, if not corrected, could result in failure of one or more engines, loss of thrust control, and damage to the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (1) At the next engine shop visit after the effective date of this AD, perform a one-time inspection of the HPT stage 1 blade retainer. Use the Accomplishment Instructions, paragraph 3.A.(1), in GE GEnx-1B SB 72-0326 R02, dated August 16, 2017, to do the inspection. (2) If any cracks are found in the HPT stage 1 blade retainer, or the retainer does not meet the dimensional criteria found in the Accomplishment Instructions, paragraph 3.A.(1), in GEnx-1B SB 72- 0326 R02, dated August 16, 2017, replace with a part eligible for installation. (g) Definition For the purpose of this AD, an ``engine shop visit'' is the induction of an engine into the shop for maintenance involving the separation of pairs of major mating engine case flanges, except separation of engine flanges solely for the purposes of transportation or for replacing the fan or propulsor, without subsequent maintenance, does not constitute an engine shop visit. (h) Alternative Methods of Compliance (AMOCs) (1) The Manager, FAA, ECO Branch, Compliance and Airworthiness Division, 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 (i)(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. (i) Related Information (1) For more information about this AD, contact Christopher McGuire, Aerospace Engineer, FAA, ECO Branch, Compliance and Airworthiness Division, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7120; fax: 781-238-7199; email: [email protected]. (2) GE GEnx-1B SB 72-0326 R02, dated August 16, 2017, can be obtained from GE using the contact information in paragraph (i)(3) of this AD. (3) For service information identified in this proposed AD, contact General Electric Company, GE-Aviation, Room 285, 1 Neumann Way, Cincinnati, OH 45215, phone: 513-552-3272; fax: 513-552-3329; email: [email protected]. (4) You may view this service information at the FAA, Engine and Propeller Standards Branch, Policy and Innovation Division, 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 August 29, 2017. Robert J. Ganley, Manager, Engine and Propeller Standards Branch, Aircraft Certification Service. [FR Doc. 2017-18571 Filed 8-31-17; 8:45 am] BILLING CODE 4910-13-P
![Federal Register / Vol. 82, No. 169 / Friday, September 1, 2017 / Proposed Rules 41577
pursuant to general guidelines issued by PART 590—ADMINISTRATIVE the liquefied or compressed equivalent
OMB. PROCEDURES WITH RESPECT TO thereof, in a single shipment for
OMB’s guidelines were published at THE IMPORT AND EXPORT OF scientific, experimental, or other non-
67 FR 8452 (February 22, 2002), and NATURAL GAS utility gas use without prior
DOE’s guidelines were published at 67 authorization of the Assistant Secretary.
FR 62446 (October 7, 2002). DOE has ■ 1. The authority citation for part 590 [FR Doc. 2017–18580 Filed 8–31–17; 8:45 am]
reviewed this proposed rule under the continues to read as follows: BILLING CODE 6450–01–P
OMB and DOE guidelines and has Authority: Secs. 301(b), 402(f), and 644,
concluded that it is consistent with Pub. L. 95–91, 91 Stat. 578, 585, and 599 (42
applicable policies in those guidelines. U.S.C. 7151(b), 7172(f), and 7254), Sec. 3, Act
DEPARTMENT OF TRANSPORTATION
of June 21, 1938, c. 556, 52 Stat. 822 (15
K. Executive Order 13211 U.S.C. 717b); E.O. 12009 (42 FR 46267,
Federal Aviation Administration
September 15, 1977); DOE Delegation Order
Executive Order 13211, ‘‘Actions Nos. 0204–111 and 0204–127 (49 FR 6684,
Concerning Regulations That February 22, 1984; 54 FR 11437, March 20, 14 CFR Part 39
Significantly Affect Energy Supply, 1989). [Docket No. FAA–2017–0660; Product
Distribution, or Use,’’ 66 FR 28355 (May Identifier 2017–NE–21–AD]
■ 2. Section 590.102 is amended by:
22, 2001) requires Federal agencies to ■ a. Redesignating paragraph (p) as
prepare and submit to the OMB, a RIN 2120–AA64
paragraph (q), respectively;
Statement of Energy Effects for any ■ b. Adding new paragraph (p). Airworthiness Directives; General
proposed significant energy action. A The revisions to read as follows: Electric Company Turbofan Engines
‘‘significant energy action’’ is defined as
any action by an agency that § 590.102 Definitions. AGENCY: Federal Aviation
promulgated or is expected to lead to * * * * * Administration (FAA), DOT.
promulgation of a final rule, and that: (p) Small-scale natural gas export ACTION: Notice of proposed rulemaking
(1) Is a significant regulatory action means an export of natural gas to (NPRM).
under Executive Order 12866, or any nations with which there is not in effect
successor order; and (2) is likely to have a free trade agreement with the United SUMMARY: We propose to adopt a new
a significant adverse effect on the States requiring national treatment for airworthiness directive (AD) for certain
supply, distribution, or use of energy, or trade in natural gas and with which General Electric Company (GE) GEnx–
(3) is designated by the Administrator of trade is not prohibited by U.S. law or 1B64/P2, –1B67/P2, –1B70/P2, –1B70/
OIRA as a significant energy action. For policy, provided that the application for 75/P2, –1B70C/P2, and –1B74/75/P2
any proposed significant energy action, such export authority satisfies the turbofan engines. This proposed AD was
the agency must give a detailed following two criteria: prompted by a report of the failure of
statement of any adverse effects on (1) The application proposes to export the high-pressure turbine (HPT) stage 1
energy supply, distribution, or use natural gas in a volume up to and blade retainer and subsequent in-flight
should the proposal be implemented, including 0.14 billion cubic feet per shutdown of the engine. This proposed
and of reasonable alternatives to the day, and AD would require inspection of the HPT
action and their expected benefits on (2) DOE’s approval of the application stage 1 blade retainer. We are proposing
energy supply, distribution, and use. does not require an environmental this AD to address the unsafe condition
For the reasons discussed in section impact statement or an environmental on these products.
II.C, this regulatory action would not assessment under the National DATES: We must receive comments on
have a significant adverse effect on the Environmental Policy Act, 42 U.S.C. this proposed AD by October 16, 2017.
supply, distribution, or use of energy, 4321 et seq. ADDRESSES: You may send comments,
and therefore is not a significant energy * * * * * using the procedures found in 14 CFR
action. Accordingly, DOE has not ■ 3. Section 590.208 is revised to read 11.43 and 11.45, by any of the following
prepared a Statement of Energy Effects. as follows: methods:
IV. Approval of the Office of the • Federal eRulemaking Portal: Go to
§ 590.208 Small volume exports. http://www.regulations.gov. Follow the
Secretary
(a) Small-scale natural gas exports. instructions for submitting comments.
The Secretary of Energy has approved Small-scale natural gas exports are • Fax: 202–493–2251.
the publication of this proposed rule. deemed to be consistent with the public • Mail: U.S. Department of
interest under section 3(a) of the Natural Transportation, Docket Operations, M–
List of Subjects in 10 CFR Part 590 Gas Act, 15 U.S.C. 717b(a). DOE will 30, West Building Ground Floor, Room
Administrative practice and issue an export authorization upon W12–140, 1200 New Jersey Avenue SE.,
procedure, Exports, Natural gas, receipt of any complete application to Washington, DC 20590.
Reporting and recordkeeping conduct small-scale natural gas exports. • Hand Delivery: Deliver to Mail
requirements. DOE’s regulations regarding notice of address above between 9 a.m. and 5
applications, 10 CFR 590.205, and p.m., Monday through Friday, except
Issued in Washington, DC, on August 25,
2017. procedures applicable to application Federal holidays.
proceedings, 10 CFR part 590, subpart C For service information identified in
sradovich on DSK3GMQ082PROD with PROPOSALS
Robert J. Smith,
(10 CFR 590.303 to 10 CFR 590.317), are this NPRM, contact General Electric
Acting Assistant Secretary, Office of Fossil Company, GE-Aviation, Room 285, 1
not applicable to small-scale natural gas
Energy.
exports. Neumann Way, Cincinnati, OH 45215,
For the reasons stated in the (b) Scientific, experimental, or other phone: 513–552–3272; fax: 513–552–
preamble, DOE proposes to amend part non-utility natural gas exports. Any 3329; email: geae.aoc@ge.com. You may
590, chapter II of title 10, subchapter G, person may export up to 100,000 cubic view this service information at the
Code of Federal Regulations as set forth feet of natural gas (14.73 pounds per FAA, Engine and Propeller Standards
below: square inch at 60 degrees Fahrenheit) or Branch, Policy and Innovation Division,
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![Federal Register / Vol. 82, No. 169 / Friday, September 1, 2017 / Proposed Rules 41579
PART 39—AIRWORTHINESS transportation or for replacing the fan or regulations governing the VA’s Veteran-
DIRECTIVES propulsor, without subsequent maintenance, Owned Small Business (VOSB)
does not constitute an engine shop visit. Verification Program. The Verification
■ 1. The authority citation for part 39 (h) Alternative Methods of Compliance Program has been the subject of reports
continues to read as follows: (AMOCs) from both the Government
Authority: 49 U.S.C. 106(g), 40113, 44701. (1) The Manager, FAA, ECO Branch, Accountability Office and VA’s Office of
Compliance and Airworthiness Division, has Inspector General stating that despite
§ 39.13 [Amended] the authority to approve AMOCs for this AD, VA’s Verification Program, fraud still
■ 2. The FAA amends § 39.13 by adding if requested using the procedures found in 14 exists in the Veterans First Contracting
the following new airworthiness CFR 39.19. In accordance with 14 CFR 39.19, Program. Some stakeholder feedback
directive (AD): send your request to your principal inspector has been that the current regulation is
or local Flight Standards District Office, as too open to interpretation and is
General Electric Company: Docket No. FAA– appropriate. If sending information directly
2017–0660; Product Identifier 2017–NE– to the manager of the ECO Branch, send it to
unnecessarily more rigorous than
21–AD. the attention of the person identified in similar certification programs run by the
(a) Comments Due Date paragraph (i)(1) of this AD. You may email United State Small Business
your request to: ANE-AD-AMOC@faa.gov. Administration (SBA).
We must receive comments by October 16, The proposed rule sought to clarify
(2) Before using any approved AMOC,
2017.
notify your appropriate principal inspector, the eligibility requirements for
(b) Affected ADs or lacking a principal inspector, the manager businesses to obtain ‘‘verified’’ status,
None. of the local flight standards district office/ added and revised definitions,
certificate holding district office. reordered requirements, redefined the
(c) Applicability
(i) Related Information definition of ‘‘control,’’ and provided
This AD applies to General Electric explanatory information on VA’s
Company (GE) GEnx–1B64/P2, –1B67/P2, (1) For more information about this AD,
contact Christopher McGuire, Aerospace examination and review processes and
–1B70/P2, –1B70/75/P2, –1B70C/P2, and
Engineer, FAA, ECO Branch, Compliance and procedures. The proposed rule
–1B74/75/P2 turbofan engines, with a high-
pressure turbine (HPT) stage 1 blade retainer, Airworthiness Division, 1200 District additionally sought to implement new
part number (P/N) 2445M91P01 or Avenue, Burlington, MA 01803; phone: 781– changes to community property
2383M99P02, with a serial number listed in 238–7120; fax: 781–238–7199; email: restrictions, unconditional ownership,
Planning Information, paragraph 1.A., of GE Christopher.mcguire@faa.gov. and day-to-day requirements and full-
(2) GE GEnx–1B SB 72–0326 R02, dated
GEnx–1B Service Bulletin (SB) 72–0326 R02, time requirements. An exception for
dated August 16, 2017. August 16, 2017, can be obtained from GE
using the contact information in paragraph majority, supermajority, unanimous,
(d) Subject (i)(3) of this AD. and other voting provisions for
(3) For service information identified in extraordinary business decisions were
Joint Aircraft System Component (JASC)
Code 7250, Turbine Section. this proposed AD, contact General Electric also proposed.
Company, GE-Aviation, Room 285, 1 Comments to the proposed rule were
(e) Unsafe Condition Neumann Way, Cincinnati, OH 45215, to be provided to the Office of Small
This AD was prompted by a report of the phone: 513–552–3272; fax: 513–552–3329; and Disadvantaged Business Utilization
failure of the high-pressure turbine (HPT) email: geae.aoc@ge.com. on or before January 5, 2016. Due to the
stage 1 blade retainer and subsequent in- (4) You may view this service information nature of the adverse comments
flight shutdown of the engine. We are issuing at the FAA, Engine and Propeller Standards
Branch, Policy and Innovation Division, 1200
received, VA has determined not to
this AD to prevent failure of the HPT stage pursue implementation of the rule as
1 blade retainer. The unsafe condition, if not District Avenue, Burlington, MA. For
corrected, could result in failure of one or information on the availability of this originally proposed. Accordingly, this
more engines, loss of thrust control, and material at the FAA, call 781–238–7125. document withdraws the proposed rule.
damage to the airplane. Issued in Burlington, Massachusetts, on DATES: The proposed rule published on
August 29, 2017. November 6, 2015, 80 FR 68795 is
(f) Compliance
Robert J. Ganley, withdrawn as of September 1, 2017.
Comply with this AD within the
Manager, Engine and Propeller Standards FOR FURTHER INFORMATION CONTACT: Tom
compliance times specified, unless already
done. Branch, Aircraft Certification Service. Leney, Executive Director, Office of
(1) At the next engine shop visit after the [FR Doc. 2017–18571 Filed 8–31–17; 8:45 am] Small and Disadvantaged Business
effective date of this AD, perform a one-time BILLING CODE 4910–13–P
Utilization, Department of Veterans
inspection of the HPT stage 1 blade retainer. Affairs, 810 Vermont Ave. NW.,
Use the Accomplishment Instructions, Washington, DC 20420; (202) 462–4300.
paragraph 3.A.(1), in GE GEnx–1B SB 72– (This is not a toll-free number.)
0326 R02, dated August 16, 2017, to do the DEPARTMENT OF VETERANS
AFFAIRS SUPPLEMENTARY INFORMATION: In the
inspection.
(2) If any cracks are found in the HPT stage
proposed rule published in the Federal
1 blade retainer, or the retainer does not meet 38 CFR Part 74 Register on November 6, 2015, 80 FR
the dimensional criteria found in the 68795, VA sought to amend 38 CFR part
RIN 2900–AO63 74 to find an appropriate balance
Accomplishment Instructions, paragraph
3.A.(1), in GEnx–1B SB 72–0326 R02, dated VA Veteran-Owned Small Business between preventing fraud in the
August 16, 2017, replace with a part eligible Veterans First Contracting Program and
sradovich on DSK3GMQ082PROD with PROPOSALS
for installation.
Verification Guidelines
providing a process that would make it
(g) Definition AGENCY: Department of Veterans Affairs. easier for more VOSBs to become
For the purpose of this AD, an ‘‘engine ACTION: Withdrawal of proposed rule. verified.
shop visit’’ is the induction of an engine into
VA received 203 comments from 96
the shop for maintenance involving the SUMMARY: The Department of Veterans commenters. 134 of these comments
separation of pairs of major mating engine Affairs (VA) published a rule in the were adverse to the proposed rule and
case flanges, except separation of engine Federal Register on November 6, 2015, VA’s verification program in general. Of
flanges solely for the purposes of 80 FR 68795 that proposed amending its the 134 adverse comments, several were
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Document Created: 2017-09-01 01:50:12
Document Modified: 2017-09-01 01:50:12
| 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 October 16, 2017. | |
| Contact | Christopher McGuire, Aerospace Engineer, FAA, ECO Branch, Compliance and Airworthiness Division, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7120; fax: 781- 238-7199; email: [email protected] | |
| FR Citation | 82 FR 41577 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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