# Airworthiness Directives; Schweizer Aircraft Corporation Model 269A, 269A-1, 269B, 269C, and TH-55A Helicopters
> **Rule** · Final rule. · Published 2003-07-08 · Effective 2003-08-12 · 68 FR 40478
## Document
- **Document number:** 03-16685
- **Category:** airworthiness
- **Manufacturer:** Schweizer
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 68 FR 40478
- **Publication date:** 2003-07-08
- **Effective date:** 2003-08-12
- **FAA docket:** Docket No. 2002-SW-25-AD
## Abstract

This amendment supersedes an existing airworthiness directive (AD), applicable to Schweizer Aircraft Corporation (Schweizer) Model 269A, 269A-1, 269B, 269C, and TH-55A helicopters, that currently requires inspecting the lugs on certain aft cluster fittings and each aluminum end fitting on certain tailboom struts. Modifying or replacing each strut assembly within a specified time period and serializing certain strut assemblies are also required by the existing AD. This amendment requires the same actions as the existing AD, and also requires a one-time inspection and repair, if necessary, of certain additional cluster fittings, and replacement and modification of certain cluster fittings within 150 hours time-in-service (TIS) or 6 months, whichever occurs first. This amendment is prompted by the need to expand the applicability to include certain Hughes-manufactured cluster fittings and to provide a terminating action for the repetitive dye-penetrant inspections of the cluster fittings. The actions specified by this AD are intended to prevent failure of a tailboom support strut or a cluster fitting, which could cause rotation of a tailboom into the main rotor blades, and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/07/08/03-16685/airworthiness-directives-schweizer-aircraft-corporation-model-269a-269a-1-269b-269c-and-th-55a)
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