# Airworthiness Directives; Aerospatiale Model ATR42-300 and ATR42- 320 Series Airplanes
> **Rule** · Final rule. · Published 1999-08-31 · Effective 1999-10-05 · 64 FR 47384
## Document
- **Document number:** 99-22389
- **Category:** airworthiness
- **Manufacturer:** Aerospatiale Model ATR42-300 and ATR42- 320 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 64 FR 47384
- **Publication date:** 1999-08-31
- **Effective date:** 1999-10-05
- **FAA docket:** Docket No. 98-NM-201-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Aerospatiale Model ATR42-300 and ATR42-320 series airplanes, that requires a one-time inspection for cracking of a fastener hole located on the lower surface of the outer wing, and repair, if necessary; and cold working of the hole and installation of a new fastener in the hole. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent fatigue damage on the outer wing and consequent reduced structural integrity of the wing.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/08/31/99-22389/airworthiness-directives-aerospatiale-model-atr42-300-and-atr42--320-series-airplanes)
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