COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beechcraft 1900 Series Aeroplanes 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 39.1 (1) of CAR 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. AD/BEECH 1900/32 Wing Fuel Quantity Wiring Harness 12/2000 Applicability: Beech Model 1900 aeroplanes with the following serial numbers: Model Serial Number Range 1900C UC-1 through UC-174 Requirement 1 and 2. 1900C (C-12J) UD-1 through UD-6 Requirement 1 and 2. 1900D UE-1 through UE-331 Requirement 1 and 2 UE-332 through UE-354 Requirement 2 only Requirement: 1. Install a spiral wrap around the wing fuel quantity wiring harness in accordance with Raytheon Mandatory Service Bulletin No. SB 28-3299, issued December 1999. 2. Apply an adhesive sealant to the Wiggins couplings on the internal fuel tank wiring carry-through conduit in accordance with Raytheon SB 28-3299. Note: FAA AD 2000-19-04 Amdt 39-11905 refers. Compliance: For Requirement 1 - Within the next 3 calendar months after the effective date of this Directive or within the next 600 hours time-in-service after the effective date of this Directive, whichever occurs first. For Requirement 2 - As for Requirement 1. This Airworthiness Directive becomes effective on 30 November 2000. Background: The Federal Aviation Administration has received reports of chafed or shorted wing fuel quantity harness wires on Beech 1900 Model aeroplanes. These occurrences were found during regular maintenance inspections. This Directive requires the installation of a spiral wrap around the wing fuel quantity wiring harness and the application of an adhesive sealant to the Wiggins couplings on the internal fuel tank wiring carry-through conduit. COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES These actions are intended to prevent chafing between the wing fuel quantity wiring harness and the internal wing harness supports at each wing rib location, which could cause the fuel quantity indication to become unreliable. This could leave the flight crew without an indication of the amount of fuel the aeroplane has during flight. The actions are also intended to prevent fuel leaking through the wiring carry-through conduit and into the wing tip or wheel well area, which could lead to a fire or explosion. Eugene Paul Holzapfel Delegate of the Civil Aviation Safety Authority 20 October 2000 The above AD is notified in the Commonwealth of Australia Gazette on 1 November 2000.