AD/PA-32/57 - Nose Landing Gear Retraction System - Modification - CANCELLED

This document cancels a previous aviation safety rule that required owners of Piper PA-32 (Cherokee Six) series aircraft to modify their nose landing gear retraction systems.

What it does:

• Cancels Airworthiness Directive AD/PA-32/57 effective 25 September 2008
• Removes the legal requirement for aircraft operators to comply with the earlier modification order (which mandated compliance with Piper Service Bulletin No. 593 within 100 flying hours after September 1978)

Who it affects:

• Owners and operators of Piper PA-32 Cherokee Six aeroplanes
• Maintenance organisations servicing these aircraft

Why it matters: The original rule required a specific safety modification to prevent nose landing gear failures. This cancellation removes that compliance burden because the modification is no longer considered necessary for airworthiness, though operators may still choose to perform it as best practice.