# Proposed AD 98-SW-39-AD: Schweizer Aircraft Corporation and Hughes Helicopters, Inc. Model 269C-1 Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 99-04-14
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 10, 1998, 63 FR 62973
- Comments due: January 11, 1999
- Became: [AD 99-04-14](https://openairdocs.org/ad/99-04-14)
- Docket: 98-SW-39-AD
- FR document: 98-30047
- Official PDF: https://openairdocs.org/files/sha256/54/be/54beda2019e836ee0de6954414493f6ac818f0e06b3c3f45da449d58bbb5764f (from https://www.govinfo.gov/content/pkg/FR-1998-11-10/pdf/98-30047.pdf)
- Federal Register: https://www.federalregister.gov/documents/1998/11/10/98-30047/airworthiness-directives-schweizer-aircraft-corporation-and-hughes-helicopters-inc-model-269c-1
- Page: https://openairdocs.org/proposed/98-SW-39-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to Schweizer Aircraft Corporation and Hughes Helicopters, Inc. (Schweizer) Model 269C-1 helicopters. This proposal would require a visual inspection of the bond line between the main rotor blade (blade) abrasion strip (abrasion strip) and the blade for voids, separation, or lifting of the abrasion strip; a visual inspection of the adhesive bead around the perimeter of the abrasion strip for erosion, cracks, or blisters; a tap (ring) test of the abrasion strip for debonding or hidden corrosion voids; and removal of any blade with an unairworthy abrasion strip and replacement with an airworthy blade. This proposal is prompted by four reports that indicate that debonding and corrosion have occurred on certain blades where the abrasion strip attaches to the blade skin. The actions specified by the proposed AD are intended to prevent loss of the abrasion strip from the blade and subsequent loss of control of the helicopter.

## Notices in this docket

- Nov 10, 1998: Notice of proposed rulemaking (NPRM). (first notice), FR document 98-30047, comments due Jan 11, 1999 (https://www.federalregister.gov/documents/1998/11/10/98-30047/airworthiness-directives-schweizer-aircraft-corporation-and-hughes-helicopters-inc-model-269c-1)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.