AD/DHC-1/9 Rudder Torque Tube Flange 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/DHC-1/9.

De Havilland DHC-1 (Chipmunk) Series Aeroplanes

AD/DHC-1/9 Rudder Torque Tube Flange - Inspection 11/2008

Requirement:

CANCELLED.

This AD is cancelled on 23 October 2008.

Background:

This unique AD was raised in 1957, requiring an inspection for cracks of the rudder torque tube, Part No. C1-TR-91, in the area of the shoulders on the semi-circular flange and the rivets securing the flange to the rudder torque tube.  Compliance was required at intervals not exceeding 250 hours TIS.

As this AD is superseded by AD/DHC-1/38, referencing British Aerospace Mandatory Technical News Sheet (TNS) CT(C1) No. 200 and applicable UK CAA AD 006-03-97, it is no longer required.

David Villiers
Delegate of the Civil Aviation Safety Authority

10 September 2008