Commonwealth legislation

AD/SF340/41 - Elevator and Aileron Coves

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This Act has been repealed and is no longer in force. It is retained for historical reference.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 mandatory CASA Airworthiness Directive applies to SAAB SF340A (s/n 004–159) and SF340B (s/n 160–260). It addresses water ingress into the coves around elevator and aileron control surfaces that can freeze between composites and foil lining and jam the controls.

Operators must carry out inspections and corrective actions per SAAB Service Bulletin 340-51-012, with the initial detailed inspection within 500 flight hours after 3 Feb 1994, to prevent loss of control.

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Current sections

Direct links to the current provisions in AD/SF340/41 - Elevator and Aileron Coves.

AD/SF340/41 - Elevator and Aileron Coves

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/SF340/41 Elevator and Aileron Coves 2/94

Applicability: Model SF340A with serial numbers 004 through 159 Model 340B with serial numbers 160 through 260.

Requirement: Action in accordance with SAAB Service Bulletin 340-51-012.

Note: LFV AD 1-060 refers.

Compliance: As specified in the Requirement Document with the initial detailed inspection to be performed within 500 hours time in service after 3 February 1994.

Background: A report was received of the elevators of an aircraft requiring more control force than normal. An investigation revealed that water ingress had occurred between the composite structure and the aluminium foil of the cove, and contact was made between the foil and the elevator when the water froze. This condition may ultimately lead to jamming of the control surface.

Source text

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

1 AD/SF340/41 - Elevator and Aileron Coves