AD/Bell 212/22 Tail Rotor Drive Shaft Replacement 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 212/22.

Bell Helicopter Textron 212 Series Helicopters

AD/BELL 212/22 Tail Rotor Drive Shaft - Replacement 4/2009

Requirement:	CANCELLED.
This AD is cancelled on 9 April 2009.
Background:	This AD, issued in 1978, required installation of an improved tail rotor drive shaft in accordance with Bell ASB No. 212-78-7 to avoid the drive shaft contacting the tail boom structure at critical speed.  The AD compliance was within 200 hours time in service after 30 September 1978.  As all aircraft would be modified by now, the AD is no longer required.

James Coyne
Delegate of the Civil Aviation Safety Authority

16 February 2009