AD/Cessna 208/18 Emergency Power Lever Shear Wire (Cth)

AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998.  The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Cessna 208 Series Aeroplanes

AD/CESSNA 208/18 Emergency Power Lever Shear Wire 7/2005

Applicability:

Cessna 208 and 208B aircraft approved for operation under CAR 174B and CAR 175A, Approved Single Engine Turbine Powered Aircraft (ASETPA).

Requirement:

Install a frangible/shear wire that ties the Emergency Power Lever (EPL) to the pedestal cover in accordance with Cessna Service Bulletin (SB) CAB01-15.

Note:  The aircraft maintenance manual details actions to be followed when the frangible/shear wire is found broken.

Compliance:

Unless previously accomplished, within 6 months from the effective date of this Directive.

This Airworthiness Directive becomes effective on 7 July 2005.

Background:

Following an incident involving the use of the EPL, the Australian Transport Safety Bureau recommended the fitment of frangible/shear wire between the pedestal and the EPL.  This will help ensure appropriate maintenance actions when the EPL has been used for any reason.

Neville Probert
Delegate of the Civil Aviation Safety Authority

26 May 2005