AD/PA-32/18 - Fuel Selector Valve - Modification - CANCELLED

What this is: A formal cancellation of an old aircraft safety rule for specific Piper Cherokee Six planes.

Who it affects: Owners and operators of Piper PA-32 (Cherokee Six) series aeroplanes.

What it used to require: Back in 1970, the original rule (AD/PA-32/18) forced owners to modify the fuel selector valve according to the manufacturer's instructions (Piper Service Bulletin No. 311). This had to be done within 100 flight hours after August 1970.

What changed: As of 25 September 2008, this rule is officially dead. The Civil Aviation Safety Authority (CASA) has cancelled it because the modification is no longer considered necessary for safety.

Why it matters: If you own one of these aircraft, you no longer need to worry about complying with this specific fuel valve modification requirement. Any obligations under this directive ended in 2008.