# Airworthiness Directives; Airbus Model A300 and A300-600 Series Airplanes
> **Rule** · Final rule. · Published 1999-03-12 · Effective 1999-04-16 · 64 FR 12242
## Document
- **Document number:** 99-5993
- **Category:** airworthiness
- **Manufacturer:** Airbus Model A300 and A300-600 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 64 FR 12242
- **Publication date:** 1999-03-12
- **Effective date:** 1999-04-16
- **FAA docket:** Docket No. 98-NM-106-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A300 and A300-600 series airplanes, that requires replacement of the rivets that attach the pressurized floor panel to gantries 4 and 5 with new titanium alloy bolts. This amendment also requires, for certain airplanes, repetitive inspections to detect discrepancies of the rivets; and corrective actions, if necessary. This amendment is prompted by the issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent failure of the rivets that attach the pressurized floor panel to gantries 4 and 5, which could result in the loss of the floor panel and consequent rapid decompression of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/03/12/99-5993/airworthiness-directives-airbus-model-a300-and-a300-600-series-airplanes)
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