Commonwealth legislation

AD/SF340/9 Amdt 1 - Power Control Cable

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This AD mandates inspections of power control cables (P/N C82146-1 or C82146-2) on Saab SF340A aircraft per Saab Alert Service Bulletin SF340-76A-024 rev.2. Inspections must be done once (unless already accomplished) and thereafter every 200 flight hours.

It addresses wear at cable joints that can enlarge pin holes and cause pins to shear, risking accidental movement of the engine power lever into Beta (reverse thrust) in flight — a significant safety hazard.

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Current sections

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AD/SF340/9 Amdt 1 - Power Control Cable

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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SAAB SF340 Series Aeroplanes

AD/SF340/9

Amdt 1

Power Control Cable 7/88

Applicability: Model SAAB SF340A with power control cables P/No C82146-1 and/or C82146-2 installed.

Requirement: Inspect power control cables in accordance with SAAB Alert Service Bulletin No SF340-76A-024 revision 2.

Note: Swedish AD No 1-024 revision A refers.

Compliance: Unless already accomplished, initially inspect in accordance with the Requirement document and thereafter at intervals not exceeding 200 hours time in service.

Background: The manufacturer has received reports of wear in the two-pin joint of the power control cable and its end pieces, resulting in enlargement of the pin holes which could cause the pins to shear. A possibility then exists that the power lever on the PCU is unintentionally moved into the Beta Range when the power lever in the control quadrant is retarded to flight idle. This amendment is raised because field experience has shown that the original inspection criteria and intervals are not sufficient.

Source text

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

1 AD/SF340/9 Amdt 1 - Power Control Cable