# Proposed AD FAA-2005-20729: BAE Systems (Operations) Limited Model BAe 146 and Model Avro 146-RJ Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-23-12
- Products: BAE Systems
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 30, 2005, 70 FR 16187
- Comments due: April 29, 2005
- Became: [AD 2005-23-12](https://openairdocs.org/ad/2005-23-12)
- Docket: FAA-2005-20729 (https://www.regulations.gov/docket/FAA-2005-20729, where comments are filed)
- Project: 2002-NM-71-AD
- FR document: 05-6258
- Official PDF: https://openairdocs.org/files/sha256/20/8c/208c7a8b82b931869fa1111020d91cda2f09c1e83f05bf588bce6d1db3673eb6 (from https://www.govinfo.gov/content/pkg/FR-2005-03-30/pdf/05-6258.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/03/30/05-6258/airworthiness-directives-bae-systems-operations-limited-model-bae-146-and-model-avro-146-rj-series
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F2FF2D4703A8CD4886256FD400725326.0001
- Page: https://openairdocs.org/proposed/FAA-2005-20729

## Summary

The FAA proposes to supersede an existing airworthiness directive (AD) that applies to all BAE Systems (Operations) Limited Model BAe 146 and Model Avro 146-RJ series airplanes. The existing AD currently requires revising the Airworthiness Limitations Section (ALS) of the Instructions for Continued Airworthiness to incorporate life limits for certain items and inspections to detect fatigue cracking in certain structures. This proposed AD would also require revising the ALS of the Instructions for Continued Airworthiness to incorporate new and more restrictive life limits for certain items and new and more restrictive inspections to detect fatigue cracking in certain structures. This proposed AD is prompted by issuance of a later revision to the airworthiness limitations of the BAe/Avro 146 Aircraft Maintenance Manual, which specifies new inspections and compliance times for inspection and replacement actions. We are proposing this AD to ensure that fatigue cracking of certainstructural elements is detected and corrected; such fatigue cracking could adversely affect the structural integrity of these airplanes.

## Notices in this docket

- Mar 30, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-6258, comments due Apr 29, 2005 (https://www.federalregister.gov/documents/2005/03/30/05-6258/airworthiness-directives-bae-systems-operations-limited-model-bae-146-and-model-avro-146-rj-series)

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