Commonwealth legislation

AD/SF340/6 Amdt 1 - Flap 20 Degree Limit Stop

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

The Directorate mandates that certain SAAB SF340A aeroplanes (serials 004–138 lacking Mods 1462 and 1784) be modified per Service Bulletin SF 340-27-036 before further flight, addressing an identified risk of flow separation on the right stabilizer in some icing conditions. Amendment 1 restores full flap travel for modified aircraft and expands the AD’s scope.

Compliance is mandatory under Commonwealth regulation and the direct costs and downtime fall on owners/operators.

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Current sections

Direct links to the current provisions in AD/SF340/6 Amdt 1 - Flap 20 Degree Limit Stop.

AD/SF340/6 Amdt 1 - Flap 20 Degree Limit Stop

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/SF340/6

Amdt 1

Flap 20 Degree Limit Stop 3/88

Applicability: SF 340A with S/Nos. 004 to 138 not incorporating Modification No 1462 and 1784. Requirement: Action in accordance with S.B. SF 340-27-036.

Note: Swedish BCA AD 1-015 Rev B refers.

Compliance: Prior to further flight after 5 May 1986.

Background: It has been established that an insufficient margin of flow separation exists on the right hand stabilizer during certain icing conditions that need not be severe.

Additionally, it has been found that the flight manual restriction was insufficient in that pilots were having difficulty in determining if an ice degraded condition existed. Amendment 1 provides for the restoration of full flap travel in modified aircraft and extends aircraft effectivity.

Source text

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

1 AD/SF340/6 Amdt 1 - Flap 20 Degree Limit Stop