AD/Do 328/18 Aft Avionics Cooling Fan (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.

Dornier 328 Series Aeroplanes

AD/DO 328/18 Aft Avionics Cooling Fan 1/2006

Applicability:	Model 328-100 aeroplanes with serial numbers 3005 to 3095 inclusive.
Requirement:	If not previously accomplished, modify the aft avionics cooling fan in accordance with the Accomplishment Instructions of Dornier Service Bulletins SB-328-21-215, dated 5 May 1997.
Note:  LBA AD 97-158 refers.
Compliance:	Within 30 days after the effective date of this Directive.
This Airworthiness Directive becomes effective on 19 January 2006.
Background:	Several failures of the aft avionics cooling fan have been reported.  This Directive requires the modification of the fan to improve cooling.

James Coyne
Delegate of the Civil Aviation Safety Authority

29 November 2005