# Airworthiness Directives; Airbus Model A300 B2 and B4 Series Airplanes, and Model A300 B4-600, B4-600R, and F4-600R (Collectively Called A300-600) Series Airplanes
> **Rule** · Final rule; request for comments. · Published 2001-08-29 · Effective 2001-09-13 · 66 FR 45581
## Document
- **Document number:** 01-21487
- **Category:** airworthiness
- **Manufacturer:** Airbus Model A300 B2 and B4 Series
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 66 FR 45581
- **Publication date:** 2001-08-29
- **Effective date:** 2001-09-13
- **FAA docket:** Docket No. 2001-NM-263-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that is applicable to certain Airbus Model A300 B2 and B4 series airplanes, and certain Model A300 B4-600, B4-600R, and F4-600R (collectively called A300-600) series airplanes. This action requires a one-time inspection to detect cracks in gear rib 5 (left and right) of the main landing gear (MLG) attachment fittings at the lower flange and vertical web, and repair if necessary. This action is necessary to detect and correct fatigue cracking of the MLG attachment fittings, which could result in reduced structural integrity of the airplane. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/08/29/01-21487/airworthiness-directives-airbus-model-a300-b2-and-b4-series-airplanes-and-model-a300-b4-600-b4-600r)
---
*AI Analytics · CC0 1.0*