AD/SF340/8 Amdt 1 - MLG Separation Bolt Harness

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority (CASA) under the authority of the Australian Parliament, aim to ensure the safety and efficiency of civil aviation within Australia. Among the many regulations contained within these comprehensive rules, Part 39 - 105 addresses Airworthiness Directives for specific aircraft types, including the SAAB SF340 Series Aeroplanes. This particular amendment, AD/SF340/8 Amendment 1, was enacted to address a critical safety issue identified in the SAAB SF340A aircraft models with serial numbers ranging from 3 to 108. The problem targeted by this directive involves the vulnerability of the electrical harness connected to the main landing gear explosive bolt, which, if broken, could lead to a failure of the explosive bolt function during emergency landings, posing significant hazards. The directive mandates compliance with updated service bulletins, ensuring that the required modifications are made to prevent such failures and maintain the airworthiness of the affected aircraft.

Scope and Application

The Civil Aviation Regulations 1998, specifically PART 39 - 105, addresses the application of the Civil Aviation Safety Authority's (CASA) Schedule of Airworthiness Directives, which includes detailed requirements for specific aircraft models to ensure their continued airworthiness and safety. One such directive pertains to the SAAB SF340 Series aeroplanes, identified by serial numbers 3 to 108 inclusive. This directive mandates compliance with SAAB SB SF340-32-028 Revision 1 and SB SF340-32-041 Revision 1, focusing on modifying the separation bolt harness for the main landing gear to prevent breakage. The directive references Swedish Airworthiness Directive SAD No 1-023 and requires the modifications to be completed before 11 April 1988. The legislation applies specifically to the identified SAAB SF340A aircraft, ensuring that all entities involved in the operation, maintenance, and modification of these aircraft must adhere to the specified requirements to avoid hazardous situations that could arise from the failure of the explosive bolt function during emergency extension. This directive underscores the stringent safety standards enforced by CASA to maintain the integrity and safety of civil aviation within Australia.

Key Provisions

The Civil Aviation Regulations 1998, Part 39 - 105, specifically in relation to the SAAB SF340 Series Aeroplanes, includes an Airworthiness Directive (AD/SF340/8) which mandates compliance with specific service bulletins. The applicable SAAB SF340A aircraft are those with serial numbers ranging from 3 to 108 inclusive (AD/SF340/8). The directive requires adherence to SAAB SB SF340-32-028 Revision 1 and SB SF340-32-041 Revision 1 (AD/SF340/8). This is referenced in relation to a Swedish Airworthiness Directive (SAD No 1-023). The directive mandates that compliance must be achieved by modifying the aircraft before 11 April 1988 (AD/SF340/8). The obligations imposed by the AD/SF340/8 primarily concern the operators of SAAB SF340A aircraft within the specified serial number range. Operators are required to ensure that their aircraft comply with the specified service bulletins (SAAB SB SF340-32-028 Revision 1 and SB SF340-32-041 Revision 1). This involves conducting necessary modifications to the electrical harness of the main landing gear explosive bolt to prevent breakage. The modifications must be completed before the specified deadline of 11 April 1988 (AD/SF340/8). Failure to comply with these directives could lead to safety risks, particularly the potential loss of function in the emergency extension system, which could result in hazardous situations during flight operations. Failure to adhere to the requirements of AD/SF340/8 could result in significant legal and safety consequences. The Civil Aviation Regulations 1998 outline potential civil and criminal penalties for non-compliance with airworthiness directives. While specific penalties are not detailed in this particular directive, general provisions within the Civil Aviation Act 1988 and Civil Aviation Regulations 1998 could apply. These could include fines, enforcement actions, and potential grounding of non-compliant aircraft. In severe cases, criminal charges could be pursued against individuals or entities responsible for the non-compliance, resulting in substantial financial penalties and imprisonment.