# Airworthiness Directives; Sikorsky Aircraft Corporation Model S76A, B, and C Helicopters
> **Rule** · Final rule; request for comments. · Published 2002-10-03 · Effective 2002-10-18 · 67 FR 61984
## Document
- **Document number:** 02-24994
- **Category:** airworthiness
- **Manufacturer:** Sikorsky
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 67 FR 61984
- **Publication date:** 2002-10-03
- **Effective date:** 2002-10-18
- **FAA docket:** Docket No. 2002-SW-40-AD
## Abstract

This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 2002-15-51, sent previously to all known U.S. owners and operators of the specified Sikorsky Aircraft Corporation (Sikorsky) helicopters by individual letters. This AD requires, before further flight, identifying and removing any main rotor blade (blade) that has been damaged by lightning and any blade with an unclear service history. This AD is prompted by the failure of a blade due to lightning strike damage. The actions specified by this AD are intended to prevent failure of a blade and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2002/10/03/02-24994/airworthiness-directives-sikorsky-aircraft-corporation-model-s76a-b-and-c-helicopters)
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