Commonwealth legislation

AD/PHZL/42 Amdt 5 - Propeller Feather Assist Spring Kit

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

4/10 complexity

This mandatory Airworthiness Directive requires operators of certain Hartzell counterweight propellers — now explicitly including compact-hub "C" types — to install a Feather Assist Spring Kit to ensure reliable feathering after engine failure. Without it, a propeller may not feather properly, increasing drag and control/damage risk.

Install per Hartzell Service Letter No. 101 and Service Bulletin No. 114D, by the earlier of the next reconditioning after 30 Sept 1977 or the next overhaul/repair that disassembles the propeller.

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Current sections

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AD/PHZL/42 Amdt 5 - Propeller Feather Assist Spring Kit

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Propellers - Variable Pitch - Hartzell

AD/PHZL/42

Amdt 5

Propeller Feather Assist Spring Kit 1/86

Applicability: 1. All model HC-E ( ) Y ( ) -2 ( ) ( ) counterweight propellers.

All model ( ) HC- () (2,3) Y ( ) -2 ( ) ( ) counterweight propellers on all model aircraft. () except “E” extension.

Requirement: 1. Hartzell Service Letter No 101.

Hartzell Service Bulletin No 114D.

Compliance: 1. Before installation in an aircraft following next reconditioning after 30 September 1977.

At next overhaul, recondition or repair necessitating disassembly, whichever is the sooner.

Background: This Directive is amended to include the requirement for incorporation of the Feather Assist Spring Kit to the “C” type (compact hub) propellers.

Source text

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