AD/BEECH 90/33 Magnetic Material Near Compass Flux Valve Removal 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/BEECH 90/33.

Beechcraft 90 and 65-90 (King Air) Series Aeroplanes

AD/BEECH 90/33 Magnetic Material Near Compass
Flux Valve - Removal 7/2008

Requirement:

CANCELLED.

This AD is cancelled on 3 July 2008.

Background:

This unique Australian AD, raised in 1974 against Beechcraft Service Instruction (SI) No. 0605-039, required the installation of nonmagnetic hardware in the vicinity of the magnetic flux valve to reduce the possibility of the flux valve providing erroneous signals to the navigation instruments.

Compliance was within 200 hours TIS after 30 September 1974.

As all affected aircraft would have been modified by now, it is considered that the AD is no longer required.

James Coyne
Delegate of the Civil Aviation Safety Authority

22 May 2008