Ad/Cessna 500/12 - Glideslope Interlock - 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/CESSNA 500/12.

Cessna 500 (Citation) Series Aeroplanes

AD/CESSNA 500/12 Glideslope Interlock - Modification 10/2008

Requirement:

CANCELLED.

This AD is cancelled on 25 September 2008.

Background:

This unique Australian AD, raised in 1975 against Cessna Citation Service Bulletin (SB) No. SB 34-27, required a modification to prevent the glideslope engage logic from engaging if a valid glideslope signal is not received and will disengage the glideslope mode if a loss of valid glideslope signal occurs.

Compliance was within 100 hours TIS after 30 September 1975.

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

James Coyne
Delegate of the Civil Aviation Safety Authority

31 July 2008