AD/PA-31/43 - Alternate Air Door Magnetic Catch - Replacement/Modification - CANCELLED

What this does: This instrument cancels (revokes) Airworthiness Directive AD/PA-31/43, which previously required owners of Piper PA-31 aircraft to replace or modify the magnetic catch on the alternate air door.

Who it affects: Owners and operators of Piper PA-31 series aircraft, though the cancellation is largely procedural because all affected aircraft had already been modified by the time this instrument took effect.

Why it matters: It formally removes an obsolete compliance requirement. The original directive mandated a one-time fix according to the manufacturer’s service bulletin; since the Civil Aviation Safety Authority confirmed every affected plane had already been modified, the rule is no longer legally binding.