AD 2024-05963

[Federal Register Volume 89, Number 57 (Friday, March 22, 2024)] [Proposed Rules] [Pages 20367-20370] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2024-05963]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2024-0756; Project Identifier MCAI-2023-00549-T] RIN 2120-AA64

Airworthiness Directives; De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: The FAA proposes to supersede Airworthiness Directive (AD) 2021-25-12 and AD 2022-11-11, which apply to certain De Havilland Aircraft of Canada Limited Model DHC-8-401 and -402 airplanes. AD 2021- 25-12 requires repetitive lubrications of the trailing arm of the nose landing gear (NLG). AD 2021-25-12 also requires revising the existing maintenance or inspection program to include new and revised airworthiness limitations. AD 2022-11-11 requires a modification to the NLG shock strut assembly. Since the FAA issued AD 2021-25-12 and AD 2022-11-11, it has been determined that the pivot pin and tow fitting assembly of the NLG must be replaced. This proposed AD would continue to require the actions specified in AD 2021-25-12 and AD 2022-11-11 and would require replacement of the pivot pin and tow fitting assembly with a new, improved pivot pin and tow fitting assembly and prohibit the installation of affected parts. 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 May 6, 2024.

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 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. AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA-2024-0756; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this NPRM, the mandatory continuing airworthiness information (MCAI), any comments received, and other information. The street address for Docket Operations is listed above. Material Incorporated by Reference: For service information identified in this NPRM, contact De Havilland Aircraft of Canada Limited, Dash 8 Series Customer Response Centre, 5800 Explorer Drive, Mississauga, Ontario, L4W 5K9, Canada; telephone North America (toll-free): 855-310-1013, Direct: 647- 277-5820; email dehavilland.com">[email protected]; website dehavilland.com. You may view this service information at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206-231-3195.

FOR FURTHER INFORMATION CONTACT: Deep Gaurav, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516- 228-7300; email [email protected].