AD Notice of Proposed Rulemaking

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[Federal Register Volume 84, Number 193 (Friday, October 4, 2019)]
[Pages 53082-53084]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2019-0614; Product Identifier 2019-NE-14-AD]
RIN 2120-AA64
Airworthiness Directives; International Aero Engines Turbofan Engines

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AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
SUMMARY: The FAA proposes to supersede Airworthiness Directive (AD) 2019-11-08, which applies to all International Aero Engines, LLC (IAE) PW1133G-JM, PW1133GA-JM, PW1130G-JM, PW1129G-JM, PW1127G-JM, PW1127GA- JM, PW1127G1-JM, PW1124G-JM, PW1124G1-JM, and PW1122G-JM model turbofan engines. AD 2019-11-08 requires the removal of the main gearbox (MGB) assembly and electronic engine control (EEC) software and the installation of a part and software version eligible for installation for engines that operate on extended operations (ETOPS) flights. The actions in AD 2019-11-08 were interim and only addressed engines that operate on 180-minute or 120-minute ETOPS flights. The FAA now proposes to supersede AD 2019-11-08 to require removal and replacement of the MGB assembly on all affected engines, including engines that do not operate on 180-minute or 120-minute ETOPS flights. This proposed AD would retain all requirements of AD 2019-11-08 for ETOPS engines, and would also require replacement of the affected MGB assembly and EEC software at the next engine shop visit after the effective date of this AD for engines that do not operate on ETOPS flights. The FAA is proposing this AD to address the unsafe condition on these products.


DATES: The FAA must receive comments on this proposed AD by November 18, 2019.




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Issued in Burlington, Massachusetts, on October 1, 2019.
Robert J. Ganley,
Manager, Engine & Propeller Standards Branch, Aircraft Certification
Service.
[FR Doc. 2019-21618 Filed 10-3-19; 8:45 am]
BILLING CODE 4910-13-P


Not Applicable