# Airworthiness Directives; Airbus Model A330-202, -203, -223, and -243 Airplanes, and A330-300 Series Airplanes
> **Rule** · Final rule. · Published 2004-07-29 · Effective 2004-09-02 · 69 FR 45241
## Document
- **Document number:** 04-16915
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 69 FR 45241
- **Publication date:** 2004-07-29
- **Effective date:** 2004-09-02
- **FAA docket:** Docket No. 2003-NM-272-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A330-202, -203, -223, and -243 airplanes, and A330-300 series airplanes, that requires modification of the control box of the auxiliary power unit (APU). This action is necessary to prevent uncommanded in-flight shutdown of the APU, which could result in loss of critical electrical systems when the airplane is operated in emergency electrical configuration, and consequent reduced controllability of the airplane. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2004/07/29/04-16915/airworthiness-directives-airbus-model-a330-202--203--223-and--243-airplanes-and-a330-300-series)
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