# Proposed AD 99-NM-381-AD: Airbus Model A319, A320, and A321 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2000-24-02
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 20, 2000, 65 FR 56814
- Comments due: October 20, 2000
- Became: [AD 2000-24-02](https://openairdocs.org/ad/2000-24-02)
- Docket: 99-NM-381-AD
- FR document: 00-24116
- Official PDF: https://openairdocs.org/files/sha256/9b/ec/9bec5e3e184c16a16fd456588fe673a17d1fb38980e09c5d79dbf65bfab5d855 (from https://www.govinfo.gov/content/pkg/FR-2000-09-20/pdf/00-24116.pdf)
- Federal Register: https://www.federalregister.gov/documents/2000/09/20/00-24116/airworthiness-directives-airbus-model-a319-a320-and-a321-series-airplanes
- Page: https://openairdocs.org/proposed/99-NM-381-AD

## Summary

This document proposes the supersedure of an existing airworthiness directive (AD), applicable to certain Airbus Model A319, A320, and A321 series airplanes, that currently requires repetitive inspections to detect wear of the inboard flap trunnions, and to detect wear or debonding of the protective half-shells; and corrective actions, if necessary. This proposal would require accomplishment of the previously optional terminating action. This proposal is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by the proposed AD are intended to prevent chafing and resultant wear damage on the inboard flap drive trunnions or on the protective half-shells, which could result in failure of the trunnion primary load path; this would adversely affect the fatigue life of the secondary load path and could lead to loss of the flap.

## Notices in this docket

- Sep 20, 2000: Notice of proposed rulemaking (NPRM). (first notice), FR document 00-24116, comments due Oct 20, 2000 (https://www.federalregister.gov/documents/2000/09/20/00-24116/airworthiness-directives-airbus-model-a319-a320-and-a321-series-airplanes)

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