Document ID: chunk:federal_register_of_legislation:F2006B05136:body:0
Version: federal_register_of_legislation:F2006B05136
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
 SCHEDULE OF AIRWORTHINESS DIRECTIVES

 Cessna 185 Series Aeroplanes

AD/CESSNA 185/44 Instrument Panel Light Dimming Rheostat 3/94

            Applicability: Cessna Model 185D, 185E and 185F aircraft with serial numbers 185-0777 through 18502310 inclusive.

            Requirement: Unless previously accomplished, replace the existing instrument panel light dimming rheostat (some installations will also require the fitting of a doubler) in accordance with the Accomplishment Instructions of Cessna Single Engine Service Bulletin SEB92-33 Revision 2 dated 10 September 1993.

            Note: FAA AD 93-24-15 Amdt 39-8764 refers.

 Compliance: Prior to 3 October 1994.

 Background: The FAA has advised of a report of an inflight fire in a Cessna Model 172.

            The fire was caused by a short in the electrical wiring controlled by the instrument panel light dimming rheostat. This Directive requires the rheostat to be replaced with an improved version, which is both current-limiting and heat-protected, thus decreasing the probability of an inflight fire being caused by a defective rheostat.