Commonwealth legislation

AD/F50/47 - Nose Landing Gear Retraction Mechanism

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Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This AD mandates replacement of the nose‑gear retraction link assembly on Fokker F50 (F27 Mk 50) aeroplanes with serial numbers 20103–20108 and 20110–20131, installing a reinforced unit per RLD AD 90‑057/Fokker SB, before the aircraft exceeds 12,000 pressurisation cycles.

It was issued to address fatigue cracking found in the link; affected owners/operators must arrange, fund and schedule the work, which may cause downtime and supply/maintenance planning impacts.

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AD/F50/47 - Nose Landing Gear Retraction Mechanism

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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/F50/47 Nose Landing Gear Retraction Mechanism 10/91

Applicability: Serial number 20103 to 20108 inclusive, and 20110 to 20131 inclusive. Requirement: Action in accordance with the Technical Requirements of RLD AD 90-057, dated

23 May 1990.

Note: Fokker Service Bulletin F50-32-004, dated 17 April 1990 refers.

Compliance: Prior to exceeding 12 000 pressurisation cycles.

Background: During full-scale fatigue testing, cracks were found near a lightening hole in the nose landing gear link assembly. To improve the fatigue life of this component, this AD calls for the replacement of the current retraction link assembly with a reinforced unit.

Source text

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