# Proposed AD 96-NM-172-AD: Airbus Model A310 and A300-600 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 98-11-19
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 1, 1997, 62 FR 15439
- Comments due: May 12, 1997
- Became: [AD 98-11-19](https://openairdocs.org/ad/98-11-19)
- Docket: 96-NM-172-AD
- FR document: 97-8251
- Official PDF: https://openairdocs.org/files/sha256/2f/9f/2f9fe3514e2ef5437c95dc5f1602a7bf1495db6ef1d285aca98f6c7ff8b40982 (from https://www.govinfo.gov/content/pkg/FR-1997-04-01/pdf/97-8251.pdf)
- Federal Register: https://www.federalregister.gov/documents/1997/04/01/97-8251/airworthiness-directives-airbus-model-a310-and-a300-600-series-airplanes
- Page: https://openairdocs.org/proposed/96-NM-172-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Airbus Model A310 and A300-600 series airplanes. This proposal would require a visual inspection to detect cracks in the aft mount beam assembly of the engine; and replacement of any cracked beam with a new beam or beam assembly. The proposal also would require a fluorescent penetrant inspection to detect cracks in the aft mount beam assembly of the engine, and various follow-on actions. This proposal is prompted by reports indicating that, apparently due to manufacturing defects during the forging process, cracking was found in two engine aft mount beams. The actions specified by the proposed AD are intended to detect and correct such cracking, which could result in reduced structural integrity of the aft mount beam assembly of the engine.

## Notices in this docket

- Apr 1, 1997: Notice of proposed rulemaking (NPRM). (first notice), FR document 97-8251, comments due May 12, 1997 (https://www.federalregister.gov/documents/1997/04/01/97-8251/airworthiness-directives-airbus-model-a310-and-a300-600-series-airplanes)

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