Commonwealth legislation

AD/SF340/47 - Flap Fittings at WS 123.38

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Commonwealth

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legislative instrument

Plain English Summary

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This Airworthiness Directive requires operators of certain SAAB SF340A (s/n 004–159) and SF340B (s/n 160–379) aeroplanes to carry out inspection and corrective action on the flap fittings at wing station WS 123.38, following SAAB Service Bulletin 340-57-027, with the first inspection within 800 hours time in service after 22 June 1995. It targets worn bushings and broken rear lugs that have caused flap jams and so matters for flight safety and continued aircraft dispatchability.

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AD/SF340/47 - Flap Fittings at WS 123.38

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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 SAAB SF340 Series Aeroplanes

AD/SF340/47 Flap Fittings at WS 123.38 7/95

Applicability: Model SF 340A with serial numbers 004 through 159, and Model SF 340B with serial numbers 160 through 379.

Requirement: Action in accordance with SAAB Service Bulletin 340-57-027.

Note: LFV AD 1-072 refers.

Compliance: As specified in the Requirement Document with the initial inspection to be performed within 800 hours time in service after 22 June 1995.

Background: The LFV received a report of a jammed flap assembly. The rear lug of one of the flap fittings at WS 123.38 was found broken and the bushing in the lug was worn. It was determined that an unfavourable tolerance combination of the parts in this case had resulted in high bearing stress on the bushing.

Source text

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