AD/BEECH 90/77 Landing Gear Service 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/BEECH 90/77.

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

AD/BEECH 90/77 Landing Gear Service Valve 8/2008

Requirement:

CANCELLED.

This AD is cancelled on 31 July 2008.

Background:

This unique Australian AD, raised in 1987 against Beechcraft Service Bulletin (SB) No. 2023, required the installation of a retainer and safety wire to reduce the possibility of the landing gear service valve opening during flight preventing the emergency gear extend hand pump being used in the event of a normal system malfunction.

Compliance was prior to issue of a Certificate of Airworthiness.  As the unsafe condition presents a low risk, the retention of this AD is no longer justified.

David Villiers
Delegate of the Civil Aviation Safety Authority

17 June 2008