# Airworthiness Directives; Airbus Model A330 and A340 Series Airplanes
> **Rule** · Final rule. · Published 1999-11-12 · Effective 1999-12-17 · 64 FR 61485
## Document
- **Document number:** 99-29327
- **Category:** airworthiness
- **Manufacturer:** Airbus Model A330 and A340 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 64 FR 61485
- **Publication date:** 1999-11-12
- **Effective date:** 1999-12-17
- **FAA docket:** Docket No. 99-NM-184-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A330 and A340 series airplanes, that requires 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 amendment also provides for optional terminating action for the repetitive inspections. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this 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.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/11/12/99-29327/airworthiness-directives-airbus-model-a330-and-a340-series-airplanes)
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