# Proposed AD 2002-SW-31-AD: Model HH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH-1E, UH-1F, UH-1H, UH-1L, and UH-1P; and Southwest Florida Aviation Model SW204, SW204HP, SW205, and SW205A-1 Helicopters, Manufactured by Bell Helicopter Textron, Inc. (BHTI) for the Armed Forces of the United States

- Type: Proposed airworthiness directive (not in force)
- Status: Comment period closed
- Products: Bell Helicopter Textron
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 26, 2003, 68 FR 8862
- Comments due: April 28, 2003
- Docket: 2002-SW-31-AD
- FR document: 03-4480
- Official PDF: https://openairdocs.org/files/sha256/3c/6c/3c6c647b605a36208579ff5e366ef9cd688a75569467361fb1f5c6c4cb835ebe (from https://www.govinfo.gov/content/pkg/FR-2003-02-26/pdf/03-4480.pdf)
- Federal Register: https://www.federalregister.gov/documents/2003/02/26/03-4480/airworthiness-directives-model-hh-1k-th-1f-th-1l-uh-1a-uh-1b-uh-1e-uh-1f-uh-1h-uh-1l-and-uh-1p-and
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E6F025D394868C0586256CD90051A288.0001
- Page: https://openairdocs.org/proposed/2002-SW-31-AD

## Summary

This document proposes the supersedure of an existing airworthiness directive (AD) that applies to specified type-certificated military surplus helicopters. That AD currently requires visual and radiographic inspections of the Boom Station (BS) 194 skin joint area and the vertical fin spar caps for cracks or fretting. This action would require those same actions, but would update the type certificate holder names and add additional model helicopters to the applicability. This proposal is prompted by the need to update the current type certificate holders and to expand the applicability to additional military surplus helicopters, and expand the inspection to include corrosion and loose or working rivets. The actions specified by the proposed AD are intended to detect a crack in the skin of a tailboom assembly, tail rotor gearbox support fitting, or vertical fin spar, which could cause failure of the tailboom and loss of control of the helicopter.

## Notices in this docket

- Feb 26, 2003: Notice of proposed rulemaking (NPRM). (first notice), FR document 03-4480, comments due Apr 28, 2003 (https://www.federalregister.gov/documents/2003/02/26/03-4480/airworthiness-directives-model-hh-1k-th-1f-th-1l-uh-1a-uh-1b-uh-1e-uh-1f-uh-1h-uh-1l-and-uh-1p-and)

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