# Airworthiness Directives; Airbus Model A300 B2 and B4 Series Airplanes
> **Rule** · Final rule. · Published 1999-12-21 · Effective 2000-01-25 · 64 FR 71282
## Document
- **Document number:** 99-32736
- **Category:** airworthiness
- **Manufacturer:** Airbus Model A300 B2 and B4 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 64 FR 71282
- **Publication date:** 1999-12-21
- **Effective date:** 2000-01-25
- **FAA docket:** Docket No. 98-NM-248-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A300 B2 and B4 series airplanes, that requires repetitive inspections to detect cracking of the inner skin panel of the longitudinal lap joint; and repair, or modification and new repetitive inspections, if necessary. 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 stress corrosion cracking of the inner skin panel of the longitudinal lap joint, which could result in rapid depressurization of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/12/21/99-32736/airworthiness-directives-airbus-model-a300-b2-and-b4-series-airplanes)
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