Commonwealth legislation

AD/DHC-6/25 Amdt 1 - Main Undercarriage Platen Attach Link Fittings - Inspection

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

3/10 complexity

This Airworthiness Directive (AD) requires owners and operators of specific de Havilland DHC-6 Twin Otter aircraft to conduct safety inspections on the main undercarriage platen attach link fittings—essentially, the metal links that connect the landing gear to the aircraft body.

Who it affects

Owners and operators of DHC-6 Twin Otter aircraft with serial numbers 1 through 310
Only applies if the aircraft has not been modified according to Modification 6/1345

What it requires

Inspection of the undercarriage attachment fittings as specified in De Havilland Service Bulletin No. 6/226 Rev A
Compliance timing follows the schedule set out in that technical document

Why it matters These fittings bear the aircraft's weight during landing. If they crack or fail, the landing gear could collapse. This directive ensures older Twin Otter models (early production serial numbers) get checked for metal fatigue or damage before it becomes dangerous.

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Current sections

Direct links to the current provisions in AD/DHC-6/25 Amdt 1 - Main Undercarriage Platen Attach Link Fittings - Inspection.

AD/DHC-6/25 Amdt 1 - Main Undercarriage Platen Attach Link Fittings - Inspection

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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 DHC-6 (Twin Otter) Series Aeroplanes

AD/DHC-6/25

Amdt 1

Main Undercarriage Platen Attach Link Fittings - Inspection

4/71

Applicability: All models with S/Nos. 1 to 310 not incorporating Mod. 6/1345. Document: De Havilland of Canada SB No. 6/226 Rev. A.

Compliance: As detailed in the requirement document.

Source text

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