# Proposed AD 2003-NM-63-AD: Airbus Model A319, A320, and A321 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2004-12-19
- Products: Airbus Industrie
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 29, 2004, 69 FR 4255
- Comments due: March 1, 2004
- Became: [AD 2004-12-19](https://openairdocs.org/ad/2004-12-19)
- Docket: 2003-NM-63-AD
- FR document: 04-1908
- Official PDF: https://openairdocs.org/files/sha256/27/60/27604bed79a02e41c5e17c67b097c044ce3490fed577a075a1f3d3f92cdcc303 (from https://www.govinfo.gov/content/pkg/FR-2004-01-29/pdf/04-1908.pdf)
- Federal Register: https://www.federalregister.gov/documents/2004/01/29/04-1908/airworthiness-directives-airbus-model-a319-a320-and-a321-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/22F1DAB9E2102F1486256E2A0052E31B.0001
- Page: https://openairdocs.org/proposed/2003-NM-63-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Airbus Model A319, A320, and A321 series airplanes. This proposal would require replacement of a certain transformer rectifier unit (TRU) with a certain new TRU. This action is necessary to prevent ignition of the input filter capacitors of the TRU in position 2 of the avionics compartment, which could potentially result in smoke in the cockpit. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Jan 29, 2004: Notice of proposed rulemaking (NPRM). (first notice), FR document 04-1908, comments due Mar 1, 2004 (https://www.federalregister.gov/documents/2004/01/29/04-1908/airworthiness-directives-airbus-model-a319-a320-and-a321-series-airplanes)

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