Commonwealth legislation

AD/PT6A/21 - Replacement of Compressor Delivery Heated Air Tube - CANCELLED

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This Act has been repealed and is no longer in force. It is retained for historical reference.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

1/10 complexity

This document cancels a previous aviation safety rule that applied to specific aircraft engines.

What it cancelled: A previous requirement (Airworthiness Directive AD/PT6A/21) that forced owners of Pratt & Whitney Canada PT6A series turbine engines to replace or inspect a specific part—the "compressor delivery heated air tube"—before the engine was first certified for use or installed in an aircraft after September 1979.

What it does now: As of 2 July 2009, this maintenance requirement is no longer necessary and has been formally scrapped by the Civil Aviation Safety Authority (CASA).

Why it matters: Aircraft operators and maintenance engineers no longer need to perform this specific action to comply with Australian law, simplifying maintenance requirements for these engines.

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Current sections

Direct links to the current provisions in AD/PT6A/21 - Replacement of Compressor Delivery Heated Air Tube - CANCELLED.

Pratt and Whitney Canada Turbine Engines

Pratt and Whitney Canada Turbine Engines - PT6A Series

AD/PT6A/21	Replacement of CompressorDelivery 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.

View image in the official source

James Coyne
Delegate of the Civil Aviation Safety Authority

18 May 2009

AD/PT6A/21

Replacement of CompressorDelivery Heated

Replacement of CompressorDelivery Heated Air Tube

Replacement of Compressor

Delivery Heated Air Tube

7/2009

Source text

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

Pratt and Whitney Canada Turbine Engines Pratt and Whitney Canada Turbine Engines - PT6A Series

Pratt and Whitney Canada Turbine Engines - PT6A Series

AD/PT6A/21	Replacement of CompressorDelivery 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

AD/PT6A/21 AD/PT6A/21

AD/PT6A/21

Replacement of CompressorDelivery Heated Replacement of CompressorDelivery Heated Air Tube

Replacement of Compressor

Delivery Heated Air Tube

Deep dive

Current sections

Pratt and Whitney Canada Turbine Engines - PT6A Series

Pratt and Whitney Canada Turbine Engines - PT6A Series

AD/PT6A/21

AD/PT6A/21

Replacement of CompressorDelivery Heated Air Tube

Replacement of Compressor

7/2009

7/2009

Source text

Pratt and Whitney Canada Turbine Engines Pratt and Whitney Canada Turbine Engines - PT6A Series

Pratt and Whitney Canada Turbine Engines - PT6A Series

AD/PT6A/21 AD/PT6A/21

AD/PT6A/21

Replacement of CompressorDelivery Heated Replacement of CompressorDelivery Heated Air Tube

Replacement of Compressor

7/2009 7/2009

7/2009