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AD 2024-08893

Published 2024-04-25 · 48 models · 4,142 US-registered tails affected · Federal Register

Airworthiness Directives; Various Helicopters Federal Register ↗

Abstract

The FAA proposes to adopt a new airworthiness directive (AD) for various helicopters modified by certain supplemental type certificates (STCs) that approve the installation of an emergency float kit or an emergency float with liferaft kit. This proposed AD was prompted by the results of an accident investigation and subsequent reports of difficulty pulling the emergency float kit float activation handle installed on the pilot cyclic. This proposed AD would require repetitively inspecting the pull force on the float activation handle and, depending on the results, accomplishing corrective actions. For certain model helicopters, this proposed AD would also require removing from service and replacing certain part-numbered float inflation reservoirs (reservoirs) and pull cable assemblies (cables) with certain other part-numbered reservoirs and cables. Finally, this proposed AD would prohibit installing certain part-numbered reservoirs and cables on certain helicopters. The FAA is proposing this AD to address the unsafe condition on these products.

Applicability · by US fleet size

Federal Register text

Verbatim; the Federal Register publication is the legally binding document. Cite: 89 FR 31659. View on Federal Register ↗

[Federal Register Volume 89, Number 81 (Thursday, April 25, 2024)] [Proposed Rules] [Pages 31659-31663] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2024-08893]

======================================================================== Proposed Rules Federal Register ________________________________________________________________________ This section of the FEDERAL REGISTER contains notices to the public of the proposed issuance of rules and regulations. The purpose of these notices is to give interested persons an opportunity to participate in the rule making prior to the adoption of the final rules. ========================================================================

Federal Register / Vol. 89, No. 81 / Thursday, April 25, 2024 / Proposed Rules

[[Page 31659]]

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2024-1004; Project Identifier AD-2023-01058-R] RIN 2120-AA64

Airworthiness Directives; Various Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) for various helicopters modified by certain supplemental type certificates (STCs) that approve the installation of an emergency float kit or an emergency float with liferaft kit. This proposed AD was prompted by the results of an accident investigation and subsequent reports of difficulty pulling the emergency float kit float activation handle installed on the pilot cyclic. This proposed AD would require repetitively inspecting the pull force on the float activation handle and, depending on the results, accomplishing corrective actions. For certain model helicopters, this proposed AD would also require removing from service and replacing certain part-numbered float inflation reservoirs (reservoirs) and pull cable assemblies (cables) with certain other part-numbered reservoirs and cables. Finally, this proposed AD would prohibit installing certain part-numbered reservoirs and cables on certain helicopters. 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 June 10, 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-2024-1004; 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, any comments received, and other information. The street address for Docket Operations is listed above. Material Incorporated by Reference: For Dart Aerospace service information identified in this NPRM, contact Dart Aerospace, LTD., 1270 Aberdeen St., Hawkesbury, ON, K6A 1K7, Canada; phone: 1-613-632-5200; Fax: 1-613-632-5246; or at dartaero.com. You may view this service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Parkway, Room 6N-321, Fort Worth, TX 76177. For information on the availability of this material at the FAA, call (817) 222-5110. Other Related Service Information: For additional Dart Aerospace service information identified in this NPRM, use the Dart Aerospace, LTD., contact information under Material Incorporated by Reference above. You may also view this service information at the FAA contact information under Material Incorporated by Reference above.

FOR FURTHER INFORMATION CONTACT: Johann Magana, Aviation Safety Engineer, FAA, 3960 Paramount Boulevard, Lakewood, CA 90712; phone: (562) 627-5322; email: [email protected].