AD/TB20/1 - Engine Mount - Inspection/Replacement - CANCELLED

What this does: This document cancels an old air safety rule (Airworthiness Directive AD/TB20/1) that previously required owners of specific aircraft to replace certain engine mounts.

Who it affects: Owners and operators of Aerospatiale (Socata) TB20 (Trinidad) series aeroplanes.

What changed: The original rule (issued in 1984) required replacing engine mounts with specific serial numbers—referenced in Service Bulletin No. 20 GR 71-09—before the aircraft could fly again. As of 2 July 2009, this requirement is completely removed because it is "no longer required."

Why it matters: Aircraft owners and maintenance providers no longer need to comply with this specific directive. This eliminates a mandatory inspection or replacement task, potentially saving time and maintenance costs for affected aircraft.