# Proposed AD FAA-2004-18678: BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-05-03
- Products: BAE Systems
- Product type: Aircraft
- Action: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period.
- Published: December 16, 2004, 69 FR 75275
- Comments due: January 10, 2005
- Became: [AD 2005-05-03](https://openairdocs.org/ad/2005-05-03)
- Docket: FAA-2004-18678 (https://www.regulations.gov/docket/FAA-2004-18678, where comments are filed)
- Project: 2001-NM-312-AD
- FR document: 04-27511
- Official PDF: https://openairdocs.org/files/sha256/91/9d/919d570f83882d39d97c93d29767e997224950ba4550e507a7ddc23e8465ae71 (from https://www.govinfo.gov/content/pkg/FR-2004-12-16/pdf/04-27511.pdf)
- Federal Register: https://www.federalregister.gov/documents/2004/12/16/04-27511/airworthiness-directives-bae-systems-operations-limited-model-bae-146-and-avro-146-rj-series
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E664B927E46C716F86256F6C005CF310.0001
- Page: https://openairdocs.org/proposed/FAA-2004-18678

## Summary

The FAA is revising an earlier NPRM for an airworthiness directive (AD) that applies to all BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ series airplanes. The original NPRM would have required repetitive detailed inspections of the rear fuselage upper skin to detect cracking due to fatigue, and repair if necessary. The original NPRM was prompted by evidence of cracking due to fatigue along the edges of certain chemi-etched pockets in the rear fuselage upper skin. This new action revises the area of inspection specified in the original NPRM. We are proposing this supplemental NPRM to prevent a possible sudden loss of cabin pressure and consequent injury to passengers and flightcrew.

## Notices in this docket

- Jul 26, 2004: Notice of proposed rulemaking (NPRM). (first notice), FR document 04-16917, comments due Aug 25, 2004 (https://www.federalregister.gov/documents/2004/07/26/04-16917/airworthiness-directives-all-bae-systems-operations-limited-model-bae-146-and-avro-146-rj-series)
- Dec 16, 2004: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period., FR document 04-27511, comments due Jan 10, 2005 (https://www.federalregister.gov/documents/2004/12/16/04-27511/airworthiness-directives-bae-systems-operations-limited-model-bae-146-and-avro-146-rj-series)

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