AD/HILLER 12/37 - Soloy Conversion: Power Turbine Governor Control System - Modification

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

Legislation au F2006B10362 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

 


Hiller UH-12 Series Helicopters

 

AD/HILLER 12/37 Soloy Conversion: Power Turbine

Governor Control System - Modification Applicability: All Soloy turbine conversion UH12D/E and E (4 Place) helicopters. Requirement:               Soloy Conversions S.B. 06-560.

Compliance: Prior to the issue of the next Maintenance Release after 30 June 1985.


6/85

 

Background: The design, applicable prior to the issue of the Requirement Document, could result in loss of collective pitch control. This modification includes a spring bungee unit that will allow the collective lever to operate independently, if the governor cable seizes.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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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.