# Proposed AD 99-NM-28-AD: Airbus Model A319, A320, and A321 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2000-10-16
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 24, 2000, 65 FR 9225
- Comments due: March 27, 2000
- Became: [AD 2000-10-16](https://openairdocs.org/ad/2000-10-16)
- Docket: 99-NM-28-AD
- FR document: 00-4336
- Official PDF: https://openairdocs.org/files/sha256/ad/90/ad9008e0b122ef8cbfa709136872587e769ed22ca0ad474ca2c4ef57f5645b68 (from https://www.govinfo.gov/content/pkg/FR-2000-02-24/pdf/00-4336.pdf)
- Federal Register: https://www.federalregister.gov/documents/2000/02/24/00-4336/airworthiness-directives-airbus-model-a319-a320-and-a321-series-airplanes
- Page: https://openairdocs.org/proposed/99-NM-28-AD

## Summary

This document proposes the supersedure of an existing airworthiness directive (AD), applicable to all Airbus Model A319, A320, and A321 series airplanes, that currently requires repetitive inspections for discrepancies of the lock bolt for the pintle pin on the main landing gear (MLG), and follow-on corrective actions, if necessary. This action would require additional follow-on actions for certain airplanes. 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 detect and correct a rotated, damaged, or missing lock bolt, which could result in disengagement of the pintle pin from the pintle fitting bearing, and consequent collapse of the MLG during landing.

## Notices in this docket

- Feb 24, 2000: Notice of proposed rulemaking (NPRM). (first notice), FR document 00-4336, comments due Mar 27, 2000 (https://www.federalregister.gov/documents/2000/02/24/00-4336/airworthiness-directives-airbus-model-a319-a320-and-a321-series-airplanes)

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