AD/DHC-6/5 Fuselage Frame and Wing Strut Modification 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-6/5.

DHC-6 (Twin Otter) Series Aeroplanes

AD/DHC-6/5 Fuselage Frame and Wing Strut - Modification 12/2008

Requirement:

CANCELLED.

This AD is cancelled on 20 November 2008.

Background:

This AD was raised in 1967 against De Havilland Canada Modification Bulletin (MB) No. 6/1063, requiring a modification to install a steel bush on both sides of the fuselage frame at the wing strut attachment to increase fatigue life and to modify the wing strut.  Compliance was required before 1 July 1968.

As all affected aircraft would have been modified by now, this AD is no longer required.

David Villiers
Delegate of the Civil Aviation Safety Authority

9 October 2008