# Proposed AD 99-NM-184-AD: Airbus Model A330 and A340 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 99-23-16
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 10, 1999, 64 FR 49110
- Comments due: October 12, 1999
- Became: [AD 99-23-16](https://openairdocs.org/ad/99-23-16)
- Docket: 99-NM-184-AD
- FR document: 99-23477
- Official PDF: https://openairdocs.org/files/sha256/d3/56/d35626a9af2c6eec1a45e2b4f382b64d40334dc16e9a750fcbb7bf0ee6d31def (from https://www.govinfo.gov/content/pkg/FR-1999-09-10/pdf/99-23477.pdf)
- Federal Register: https://www.federalregister.gov/documents/1999/09/10/99-23477/airworthiness-directives-airbus-model-a330-and-a340-series-airplanes
- Page: https://openairdocs.org/proposed/99-NM-184-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Airbus Model A330 and A340 series airplanes. This proposal would require repetitive detailed visual inspections to detect cracking of the vertical flange of the inboard Z-stiffeners of the centerline panel of the fuselage belly fairing; and corrective actions, if necessary. This proposed AD also provides for optional terminating action for the repetitive inspections. 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 fatigue cracking of the vertical flange of the inboard Z-stiffeners of the centerline panel of the fuselage belly fairing, which could result in reduced structural integrity of the belly fairing.

## Notices in this docket

- Sep 10, 1999: Notice of proposed rulemaking (NPRM). (first notice), FR document 99-23477, comments due Oct 12, 1999 (https://www.federalregister.gov/documents/1999/09/10/99-23477/airworthiness-directives-airbus-model-a330-and-a340-series-airplanes)

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