AD/SF340/35 - Refuel/Defuel Panel Lighting

Overview

The Civil Aviation Regulations 1998, enacted by the Commonwealth of Australia, are designed to ensure the safety and regulation of civil aviation within the country. This legislation addresses the gap in safety protocols for specific aircraft models, particularly focusing on the Saab SF340 Series Aeroplanes. The Civil Aviation Safety Authority, through the Schedule of Airworthiness Directives, issued AD/SF340/35 to address reports of arcing and smoke observed in the vicinity of the refuel/defuel panel during fuel operations. The directive mandates the disconnection of lighting to prevent potential fire hazards during refuelling, ensuring compliance by 25 July 1992. This directive aims to mitigate risks associated with residual fuel or vapours igniting when in contact with the lighting panel, thereby enhancing overall aviation safety. The policy objective of the Civil Aviation Regulations 1998, as reflected in AD/SF340/35, is to maintain high safety standards by addressing specific vulnerabilities in aircraft design and operation. By implementing this directive, the Civil Aviation Safety Authority aims to prevent fire hazards that could arise from electrical arcing in the refuel/defuel panel area, thereby protecting both the aircraft and personnel involved in fuel operations. This regulation underscores the commitment of the Australian government to ensure that civil aviation remains a safe and reliable mode of transport, in line with international safety standards and best practices.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, encompasses the Civil Aviation Safety Authority’s (CASA) Schedule of Airworthiness Directives, including AD/SF340/35 concerning the Saab SF340 Series Aeroplanes. This legislation applies to aircraft model SF 340A with serial numbers ranging from 004 to 159 and model SF 340B with serial numbers from 160 onwards, provided they are equipped with a specific lighted front panel. The directive mandates the disconnection of the lighting to the refuel/defuel panel lights to mitigate the risk of fire during refuelling, a requirement stemming from reported incidents of arcing and smoke. The directive's compliance is contingent on actions taken before 25 July 1992, and it aligns with similar directives issued by the Swedish (LFV) and the Federal Aviation Administration (FAA). The scope of this directive is limited to the specified models and serial numbers, ensuring that only those aircraft identified as being at risk are subject to the safety measures outlined.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, address safety directives for the Saab SF340 series aeroplanes. One such directive, AD/SF340/35, focuses on the safety concern of arcing and smoke observed in the vicinity of the refuel/defuel panel (section 7/92). This directive applies to model SF 340A serial numbers 4 to 159 and model SF 340B serial numbers 160 onwards, provided these aircraft are equipped with specific lighted front panels (section 7/92). The directive mandates the disconnection of lighting to the refuel/defuel panel lights to prevent potential fire hazards during refuelling operations (section 7/92). This is achieved through a series of steps, starting with the removal of the refuel/defuel panel assembly, following the Aircraft Maintenance Manual (AMM) 28-21-05, and ending with the placarding of the lighting panel with "Lights Inop" and reinstallation and testing of the refuel/defuel panel (section 7/92). The obligations imposed by this directive on the parties governed, such as aircraft operators and maintenance personnel, are clear and specific. They must ensure the removal of the refuel/defuel panel assembly as per AMM 28-21-05 and follow each step meticulously to disconnect the lighting. This includes loosening the screws securing the lighting panel, removing and capping the specific wire, and properly reassembling the panel. Furthermore, they must ensure that the lighting panel is properly placarded to indicate it is inoperable and that the refuel/defuel panel is reinstalled and tested according to the AMM (section 7/92). Compliance with this directive is required prior to 25 July 1992. Failure to comply with the provisions of this directive can lead to serious consequences. The directive underscores the importance of addressing the risk of arcing and smoke by disconnecting the lighting electrical supply to prevent potential fires during refuelling operations. While specific penalties for non-compliance are not detailed in the directive, the overarching regulatory framework under which this directive operates could impose penalties for non-compliance with safety directives. Such penalties could include fines or other sanctions, reflecting the seriousness of ensuring aircraft safety and compliance with aviation regulations.