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.
Overview
The Civil Aviation Regulations 1998, amended by the Legislative instrument F2006B03650, introduced an Airworthiness Directive (AD) to address safety issues identified in Beechcraft 1900 Series aeroplanes. This AD was issued by the Civil Aviation Safety Authority (CASA) to mitigate the risks associated with chafed or shorted wing fuel quantity wiring harness wires, which were reported during regular maintenance inspections. The objective of the directive is to prevent potential hazards such as unreliable fuel quantity indications and the risk of fire or explosion due to fuel leakage through the wiring carry-through conduit. The directive mandates specific maintenance actions, including 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, in accordance with specified timelines to ensure the continued airworthiness of the affected aircraft.
Scope and Application
The Civil Aviation Regulations 1998, as part of the legislative framework governing civil aviation in Australia, include specific provisions for airworthiness directives to ensure safety standards are maintained for aircraft operation. One such directive, AD/BEECH 1900/32, pertains to the Beechcraft 1900 Series aeroplanes, specifically addressing issues related to the wing fuel quantity wiring harness. This directive applies to all Beech Model 1900 aeroplanes within certain serial number ranges, requiring 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. These actions are mandated to prevent potential chafing and shorting of wires, which could compromise fuel quantity indications and lead to safety hazards such as fires or explosions. Compliance with this directive is mandatory for the specified aircraft within 3 calendar months or 600 hours of the directive's effective date, whichever comes first. The directive was issued by a delegate of the Civil Aviation Safety Authority, indicating its jurisdictional reach within the Commonwealth of Australia.
Key Provisions
The Airworthiness Directive (AD) issued under subregulation 39.1 (1) of the Civil Aviation Regulations 1998 (CAR 1998) pertains specifically to Beechcraft 1900 Series aeroplanes, identified by their serial numbers (section 1). The directive applies to certain serial number ranges of the Beech Model 1900 aeroplanes, including 1900C, 1900C (C-12J), and 1900D. The requirements outlined in the directive mandate 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 (section 2). These actions must be carried out in accordance with Raytheon Mandatory Service Bulletin No. SB 28-3299, issued in December 1999. The directive references FAA AD 2000-19-04 Amdt 39-11905 for further context.
The AD imposes specific obligations on the parties or entities governed by it. Owners and operators of the specified Beechcraft 1900 Series aeroplanes must comply with the requirements within 3 calendar months or 600 hours of time-in-service after the effective date of the directive, whichever occurs first (section 3). Compliance with the directive is essential to address the identified safety concerns, which include the potential for chafed or shorted wing fuel quantity harness wires and fuel leakage through the wiring carry-through conduit. Failure to comply with the directive could result in safety risks, including unreliable fuel quantity indications and the potential for fires or explosions.
The AD also stipulates that non-compliance with the specified requirements may lead to various consequences. While the text does not explicitly outline the penalties or consequences for non-compliance, it is implied that failure to adhere to the directive could result in serious safety issues. The directive is designed to ensure the airworthiness of the affected aircraft and to prevent incidents that could compromise flight safety. Therefore, operators who fail to comply with the AD may face regulatory scrutiny, potential grounding of the aircraft, or other enforcement actions by the Civil Aviation Safety Authority (CASA). The directive's intent is to mandate corrective actions that ensure the safety of the aircraft and its occupants, making compliance a critical requirement for all affected parties.