AD/DAUPHIN/2 - Tail Fin Ballast Weight - Installation - CANCELLED

What this is: A cancellation notice for a previous aircraft safety rule affecting Eurocopter Dauphin helicopters (models SA 360 and SA 365).

What it used to require: Previously, owners of these helicopters had to install a ballast weight (a heavy counterweight) on the tail fin before the aircraft could receive an Australian certificate of airworthiness (the official document proving an aircraft is safe to fly).

What changed: As of 27 August 2009, this requirement is cancelled. Owners no longer need to install this specific ballast weight to legally operate these helicopters in Australia.

Why it matters: This removes a unique Australian-specific modification that was previously mandatory. The Civil Aviation Safety Authority (CASA) determined the ballast weight is no longer necessary for safety.