Commonwealth legislation

AD/F50/42 Amdt 1 - External Power Connection Relay Fitment

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

The directive requires owners/operators of Fokker F50 (F27 Mk50) aeroplanes to fit an external power-connection relay, following the technical instructions in RLD Airworthiness Directive 90‑137, to prevent contactor and circuit‑breaker damage when switching from ground to aircraft power. The Civil Aviation Safety Authority mandates compliance by reference; operators bear the parts, labour and downtime costs and must obtain and follow the referenced RLD AD and Fokker service bulletin to meet the requirement.

JSON API

Deep dive

Want the full deep dive?

Zoe can write the in-depth analysis on top of the summary above: how it works, who it affects and what each part actually does.

Current sections

Direct links to the current provisions in AD/F50/42 Amdt 1 - External Power Connection Relay Fitment.

AD/F50/42 Amdt 1 - External Power Connection Relay Fitment

meta-content-style-type: text/css meta-content-type: application/xhtml+xml; charset=utf-8 meta-generator: Aspose.Words for .NET 22.10.0

?xml version="1.0" encoding="utf-8" standalone="no"?>

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/F50/42

Amdt 1

External Power Connection Relay Fitment 5/91

Applicability: All F 27 MK50 aircraft as listed in the requirement document.

Requirement: Action in accordance with the technical requirements of RLD Airworthiness Directive 90-137 dated 14 December 1990.

Note: Fokker SB F50-24-015 dated 29 November 1990 also refers.

Compliance: As specified in the requirement document.

Background: Reports indicate that the potential exists for serious damage to occur to contactors and circuit breakers during ground power to aircraft power change-over.

Note: Amendment 1 to this AD is issued to clarify the compliance statement.

Source text

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