AD/PT6A/21 Replacement of Compressor Delivery Heated Air Tube Cancelled (Cth)

AIRWORTHINESS DIRECTIVE

On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive AD/PT6A/21.

Pratt and Whitney Canada Turbine Engines - PT6A Series

AD/PT6A/21 Replacement of Compressor
Delivery Heated Air Tube 7/2009

Requirement:	CANCELLED.
This AD is cancelled on 2 July 2009.
Background:	This unique Australian AD specified action in accordance with PWC SB No. 1315 before issue of the initial certificate of airworthiness for the aircraft, or before the engine is installed in an aircraft, after September 1979.  The AD is no longer required.

James Coyne
Delegate of the Civil Aviation Safety Authority

18 May 2009