AD/PA-31/39 - Propeller Feather Assist Spring - Installation

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

Legislation au F2006B05743 Not 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

 


Piper PA-31 Series Aeroplanes

 

AD/PA-31/39 Propeller Feather Assist Spring - Installation 12/75

Applicability: All model PA-31P fitted with Hartzell propellers HC-C3YN-2L, HC-C3YN-2LF, HC-C2YN-2LA, or HC-C3YN-2LAF.

 

Requirement: Install propeller feather assist springs in accordance with Piper SB No. 470.

 

Note: Operators are advised to refer to Piper SB No. 458, which recommended operational procedures to be observed in the event of a propeller overspeed.

 

Compliance: Within 100 hours time in service after 31 December 1975.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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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.