# Airworthiness Directives; Airbus Model A319, A320, and A321 Series Airplanes
> **Rule** · Final rule. · Published 2005-03-18 · Effective 2005-04-22 · 70 FR 13094
## Document
- **Document number:** 05-5140
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 70 FR 13094
- **Publication date:** 2005-03-18
- **Effective date:** 2005-04-22
- **FAA docket:** Docket No. FAA-2004-19264
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Airbus Model A319, A320, and A321 series airplanes. This AD requires modification of certain auxiliary power unit (APU) alternating current (AC) generators. This AD is prompted by a report of an explosion in the APU compartment, which blew open the compartment doors. We are issuing this AD to prevent oil vapor leakage from the APU AC generator, which, when combined with an electric arc at the electrical receptacle, could result in a fire or explosion in the APU compartment during flight.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2005/03/18/05-5140/airworthiness-directives-airbus-model-a319-a320-and-a321-series-airplanes)
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