AD/FPE/15 - Overland Aviation Services Fire Extinguisher Cartridges

Overview

The Airworthiness Directive (AD) issued under subregulation 39.1(1) of the Civil Aviation Regulations 1998 by the Civil Aviation Safety Authority (CASA) in 2002, specifically AD/FPE/15, addresses safety concerns related to fire extinguisher system bottle cartridges distributed by Overland Aviation Services (OAS) between 1 April 1996 and 15 September 1997. This AD was introduced in response to reports of incidents where fire extinguisher assemblies were damaged after a bottle discharge, caused by excessive energy release during functioning. The primary issue identified was that aluminium screens within the cartridges could fracture, leading to debris being discharged into the distribution tube, potentially impairing the fire extinguishing system's effectiveness. The directive mandates the inspection, removal, and replacement of affected cartridges on specified aircraft, as well as the inspection of fire extinguisher systems if a discharge has previously occurred using a suspect cartridge. The objective of this AD is to ensure the continued airworthiness and safety of the affected aircraft by mitigating the risk of fire extinguisher system malfunctions.

Scope and Application

This Airworthiness Directive (AD) issued under subregulation 39.1 (1) of the Civil Aviation Regulations 1998 applies specifically to fire extinguisher system bottle cartridges distributed by Overland Aviation Services (OAS) from 1 April 1996 to 15 September 1997, which are installed in aircraft as detailed in the provided chart. The AD mandates that these cartridges be removed from service and replaced, as they pose a safety risk due to potential damage to the discharge valve and the release of debris during functioning. Compliance with the AD is required within 120 days from its effective date of 18 April 2002, and it applies nationally across Australia as a legislative instrument issued by the Civil Aviation Safety Authority (CASA). The AD does not exclude any aircraft or entities from its requirements, and it explicitly prohibits the installation of the specified cartridges on any aircraft from the date of the AD's effectiveness. Subordinate instruments may further extend or detail the application of this AD, ensuring thorough compliance across the aviation industry.

Key Provisions

The Airworthiness Directive (AD) AD/FPE/15 issued by the Civil Aviation Safety Authority (CASA) under subregulation 39.1(1) of the Civil Aviation Regulations 1998, pertains specifically to the fire extinguisher system bottle cartridges distributed by Overland Aviation Services (OAS) from 1 April 1996 to 15 September 1997. This directive applies to cartridges installed on aircraft models as detailed in the directive's applicability section (Section 2). The primary requirement of this directive is for the removal and replacement of specified cartridges due to concerns over potential damage to the discharge valve and subsequent safety risks. Specifically, Section 3 of the directive mandates the removal of any cartridge listed in the chart, inspection of the fire extinguisher system if there has been a previous discharge, and replacement with non-OAS cartridges. Additionally, it prohibits the installation of any affected cartridges from the effective date of the directive. The AD imposes several obligations on parties affected by it. Firstly, it requires aircraft operators and relevant maintenance personnel to thoroughly check the maintenance records to identify if any of the specified cartridges are installed on their aircraft (Section 3(1)). If such cartridges are found, they must be removed from service immediately (Section 3(2)). Furthermore, if there is evidence that a cartridge has previously discharged, an inspection must be conducted to check for debris in the discharge tube(s) of the fire extinguisher system (Section 3(3)). Lastly, removed cartridges must be replaced with those not listed in the specified chart and not distributed during the specified period (Section 3(4)). In terms of compliance, Sections 1, 2, 3, and 4 of the directive must be adhered to within 120 days from the effective date of the directive, which is 18 April 2002. Failure to comply with this AD may result in serious safety risks, including potential fire hazards and compromised aircraft safety. The directive does not explicitly state penalties for non-compliance, but such failure could lead to enforcement actions by CASA, including fines or other regulatory sanctions under the Civil Aviation Regulations 1998. Non-compliance could also potentially lead to civil liabilities for any damages resulting from fires or other safety incidents caused by the failure to adhere to the AD.