AD/Cessna 550/13 Bleed Air Check Valve 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 550/13.

Cessna 550 (Citation II) Series Aeroplanes

AD/CESSNA 550/13 Bleed Air Check Valve 12/2009

Requirement:

CANCELLED.

This AD is cancelled on 19 November 2009.

Background:

This AD, raised in1986 against Cessna Service Bulletins (SB) SB 550-36-2 and SBS550-36-1, required a modification by replacement of bleed air check valve.  Compliance was required at the next scheduled maintenance period after
30 September 1986.

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

David Villiers
Delegate of the Civil Aviation Safety Authority

27 September 2009