# Airworthiness Directives; BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ Airplanes
> **Rule** · Final rule. · Published 2006-05-25 · Effective 2006-06-29 · 71 FR 30051
## Document
- **Document number:** 06-4802
- **Category:** airworthiness
- **Manufacturer:** BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 71 FR 30051
- **Publication date:** 2006-05-25
- **Effective date:** 2006-06-29
- **FAA docket:** Docket No. FAA-2006-24204
## Abstract

The FAA is superseding an existing airworthiness directive (AD), which applies to certain BAE Systems (Operations) Limited Model BAe 146 and Avro 146-RJ airplanes. That AD currently requires a one- time inspection to detect corrosion of the flap structure and machined ribs, corrective actions if necessary, and reprotection of the rib boss bores. This new AD requires a records review of the results of that inspection, and an additional inspection and related investigative/ corrective action if necessary. This AD results from the development of an improved inspection for corrosion in the subject area. We are issuing this AD to detect and correct corrosion in the flap structure and machined ribs, which could result in reduced structural integrity of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2006/05/25/06-4802/airworthiness-directives-bae-systems-operations-limited-model-bae-146-and-avro-146-rj-airplanes)
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