AD/DHC-6/61 Amdt 1 - Wing Main Spar Lower Cap Angles

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2006B09149 In force Legislative Instrument

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


DHC-6 (Twin Otter) Series Aeroplanes

 

AD/DHC-6/61

Amdt 1

Applicability: All models.


Wing Main Spar Lower Cap Angles 7/91

 

Requirement: Action in accordance with the Technical Requirements of Transport Canada AD CF- 87-02, R1.

 

Note: De Havilland SB 6/492 Revision A refers.

 

Compliance: As specified in the Requirement Document with a revised effective date of 11 July 1991 for Australian registered aircraft.

 

Background: Exfoliation corrosion in the main spar cap lower angles has been reported on older aircraft. Amendment 1 is raised to reflect a revision of the related Country of origin AD which was issued to remove flight hour limitations from the compliance time requirements.

 

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.