AD/Bell 206/25 Tail Rotor Balance Check and Tail Rotor Gearbox Casing and Mounting Inspection Cancelled (Cth)

AIRWORTHINESS DIRECTIVE

On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive AD/BELL 206/25.

Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters

AD/BELL 206/25 Tail Rotor Balance Check and Tail Rotor Gearbox Casing and Mounting Inspection 11/2008

Requirement:	CANCELLED.
This AD is cancelled on 23 October 2008.
Background:	This unique Australian AD, issued in 1970, required a one off inspection of the tail rotor gear box case and its mounting surface on the tail boom in accordance with Bell Service Letter 206A-15 to determine if the tail rotor hub and blade assembly was in balance, if there was evidence of a crack in the gear box case and if mating surfaces of gear box to tail boom were within limits.  The AD compliance was within 100 hours time in service after 31 July 1970.  As all aircraft would have been inspected by now, the AD is no longer required.

Charles Lenarcic
Delegate of the Civil Aviation Safety Authority

11 September 2008