# Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes
> **Rule** · Final rule. · Published 2015-11-24 · Effective 2015-12-29 · 80 FR 73096
## Document
- **Document number:** 2015-29682
- **Category:** airworthiness
- **Manufacturer:** ATR-GIE Avions de Transport Régional
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 80 FR 73096
- **Publication date:** 2015-11-24
- **Effective date:** 2015-12-29
- **FAA docket:** Docket No. FAA-2015-0682
## Abstract

We are adopting a new airworthiness directive (AD) for all ATR--GIE Avions de Transport R[eacute]gional Model ATR42 and ATR72 airplanes. This AD was prompted by new occurrences of certain cracked main landing gear (MLG) rear hinge pins. This AD requires identifying the serial number and part number of the MLG rear hinge pins, and replacing pins or the MLG if necessary. We are issuing this AD to detect and correct cracked rear hinge pins, which could lead to MLG structural failure, possibly resulting in collapse of the MLG and consequent injury to the occupants of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2015/11/24/2015-29682/airworthiness-directives-atr-gie-avions-de-transport-rgional-airplanes)
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