Commonwealth legislation

AD/F50/71 - Wings - Bottom Skin Access Covers

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This AD mandates operators of Fokker F.27 Mk 050 aeroplanes (serials 20103–20263) to perform the work specified in Fokker Service Bulletin F50‑57‑015 before each affected aircraft reaches 24,000 flight cycles, to address improperly seating countersunk screws that could cause centre‑wing skin fatigue cracking. Compliance (and associated inspection/repair costs and downtime) is the operator’s responsibility. The directive took effect 18 July 1996.

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AD/F50/71 - Wings - Bottom Skin Access Covers

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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/F50/71 Wings - Bottom Skin Access Covers 8/96

Applicability: Model F.27 Mk 050 Serial numbers 20103 to 20263. Requirement: Action in accordance with Fokker SB F50-57-015.

Note: RLD BLA 1996-042(A) refers.

Compliance: Prior to the accumulation of 24,000 flight cycles since new.

This Directive has effect from 18 July 1996.

Background: The heads of some countersunk screws used to attach access panels P/N 923AB and 924AB have been found not to be seating properly. This condition may result in unequal loads and cause fatigue cracking in the rabbets of the centre wing bottom skin.

Source text

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