Commonwealth legislation

AD/F50/25 - Radio Magnetic Indicators Wiring Change

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

Owners/operators of specific Fokker F50s (S/N 20103–20108, 20110–20141) must carry out a mandated wiring modification to their Radio Magnetic Indicators per Fokker Service Bulletin SBF 50‑34‑013 before 1 April 1990. The AD, issued to eliminate RMI heading errors (up to ~5°), prescribes a single corrective method, imposes the compliance cost on operators, and limits operational discretion unless an alternative is approved.

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AD/F50/25 - Radio Magnetic Indicators Wiring Change

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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 Fokker F50 (F27 Mk 50) Series Aeroplanes

AD/F50/25 Radio Magnetic Indicators Wiring Change 13/89

Applicability: F27 Mark 50 aircraft with Serial Numbers 20103 to 20108 inclusive and 20110 to 20141 inclusive

Requirement: Modify in accordance with Fokker 50 Service Bulletin SBF 50-34-013.

Note: RLD Airworthiness Directive BLA 89-097 refers.

Compliance: Prior to 1 April 1990.

Background: Errors of up to 5 degrees are possible on the RMIs due to incorrect wiring. These exceed permissible limits.

Source text

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