Commonwealth legislation

AD/SWSA226/18 - Stabiliser Trim Disconnect Controls - Modification

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

1/10 complexity

What this directive does

This Airworthiness Directive requires owners and operators of specific Fairchild (Swearingen) aircraft to modify the stabiliser trim disconnect controls — the mechanism that lets pilots manually disconnect automatic trim adjustments during flight.

Who it affects

All models of the Fairchild (Swearingen) SA226 and SA227 series aeroplanes that are fitted with an automatic pilot (autopilot).

What must be done

Operators must carry out the modifications described in Swearingen Alert Service Bulletin A22-10-2059, -3063 or -4062 (plus Supplement 1). These documents detail the specific technical changes needed to the aircraft's trim disconnect system.

Compliance deadline

The work must be completed within 100 hours of flight time after 30 August 1974.

Why it matters

This is a mandatory safety modification issued under aviation regulations to address potential issues with the autopilot trim disconnect functionality, ensuring pilots can retain manual control if the automatic system malfunctions.

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Current sections

Direct links to the current provisions in AD/SWSA226/18 - Stabiliser Trim Disconnect Controls - Modification.

AD/SWSA226/18 - Stabiliser Trim Disconnect Controls - Modification

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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 Fairchild (Swearingen) SA226 and SA227 Series Aeroplanes

AD/SWSA226/18 Stabiliser Trim Disconnect Controls - Modification

Applicability: All models fitted with an automatic pilot.

Document: Swearingen Alert SB A22-10-2059, -3063 or -4062 and supplement 1. Compliance: Within 100 hours time in service after 30 August 1974.

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Source text

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