Commonwealth legislation

AD/SF340/23 - Nacelle Cowling Door

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

This airworthiness directive requires operators of specified SAAB 340A and 340B aeroplanes (listed by serial number) to perform the technical inspections and corrective actions set out in Swedish LFV AD 1-042 (see also SAAB Service Bulletin SAAB 340-71-35). It responds to worn or trimmed nacelle forward-cowling door latch triggers that can abrade, unlock and allow a cowling door to open in flight. Aircraft operators and maintenance organisations must follow the requirement document (effective 21 March 1991) and bear the cost and scheduling burden of inspections and repairs.

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AD/SF340/23 - Nacelle Cowling Door

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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/SF340/23 Nacelle Cowling Door 3/91

Applicability: Model 340A and 340B with serial numbers; SAAB 340A-004 through -159.

SAAB 340B-160 through -200.

Requirement: Action in accordance with the technical requirements of Swedish LFV AD 1-042.

Note: SAAB-SCANIA AB SB SAAB 340-71-35 refers.

Compliance: As specified in the Requirement Document with revised effective date 21 March 1991.

Background: The latch triggers on the nacelle fwd cowling doors have on some aircraft been trimmed to make the latch fit the form of the cowling surface. This could cause abnormal abrasion on the triggers, and might cause the latches to come unlocked, and result in cowling door opening during flight.

Source text

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