Commonwealth legislation

AD/BAe 146/21 - Remote Controlled Circuit Breaker

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

Owners and operators of specified BAe 146 aircraft must inspect and modify the AC hydraulic pump remote‑controlled circuit breaker per BAe Service Bulletin 24‑69‑70484A, completing the work by 6 November 1990.

The measure addresses an in‑service failure (a loose adjustment nut that defeated over‑current protection), is mandated by the aviation authority, and requires operators to fund and schedule the maintenance to remove that specific safety risk.

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Current sections

Direct links to the current provisions in AD/BAe 146/21 - Remote Controlled Circuit Breaker.

AD/BAe 146/21 - Remote Controlled Circuit Breaker

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source British Aerospace BAe 146 Series Aeroplanes

AD/BAe 146/21 Remote Controlled Circuit Breaker 9/90

Applicability: All BAe 146 Series aeroplanes detailed in the Requirement document. Requirement: Action in accordance with BAe Service Bulletin 24-69-70484A.

Note: Compliance with this Service Bulletin has been classified mandatory by the UK CAA.

Compliance: Prior to 6 November 1990.

Background: An in service incident has occurred where an adjustment nut came loose within the AC hydraulic pump remote controlled circuit breaker resulting in one set of contacts remaining closed, thus disabling the over current protection.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.