AD/AMD 50/5 - Aft Toilet and Frame 25 Water Drainage

Overview

The Civil Aviation Regulations 1998, administered by the Civil Aviation Safety Authority (CASA), were enacted to ensure the safe operation of aircraft in Australian airspace. One specific legislative instrument within this framework is the Airworthiness Directive (AD) pertaining to Falcon 50 and 900 series aeroplanes, AD/AMD 50/5, which was introduced to address the accumulation of water in the aft toilet and frame 25 area of the aircraft. This AD was issued in response to a directive from the Direction Générale de l'Aviation Civile (DGAC), mandating checks and modifications to prevent water accumulation in critical areas surrounding the flight controls. The policy objective of this AD is to ensure the structural integrity and safety of the aircraft by mitigating the risk of water accumulation which could potentially compromise the operational safety of the aeroplane. The AD requires compliance with specific technical requirements outlined by the DGAC, specifically referencing AD 90-170-009 (B) Parts 1 and 2, and necessitates actions to be taken prior to specified dates to ensure adherence to these safety standards. This legislative instrument underscores the importance of maintaining stringent safety measures in civil aviation, ensuring that all aircraft meet the necessary airworthiness standards to protect passengers and crew.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, governs the applicability and compliance requirements for airworthiness directives concerning aircraft within Australia. This legislation applies to all Model 900 aircraft, mandating specific actions to address water accumulation in critical areas such as the box structures surrounding the flight controls at frame 25. The directives necessitate compliance with the technical requirements set by the French Directorate General for Civil Aviation (DGAC), particularly AD 90-170-009 (B) Parts 1 and 2, and Dassault Aviation Service Bulletins F900-57, F900-82, and F900-83. Compliance must be achieved before the specified dates of 13 February 1991 and 13 November 1991, ensuring that any water accumulation issues are rectified to maintain the airworthiness of the aircraft. This directive underscores the importance of adhering to international standards and the need for timely modifications to ensure safety and compliance in the aviation industry.

Key Provisions

The Civil Aviation Regulations 1998, specifically under Part 39 - 105, includes Airworthiness Directives (AD) that govern the maintenance and modifications required for certain aircraft models to ensure their safety and airworthiness. One such AD pertains to the Falcon 50 and 900 series aeroplanes, focusing on the aft toilet and frame 25 water drainage (AD/AMD 50/5). This directive applies to all Model 900 aircraft and mandates specific actions to prevent water accumulation in the box structures surrounding the flight controls at frame 25. The directive references technical requirements from the French civil aviation authority (DGAC) and Dassault Aviation Service Bulletins (SBs) to ensure compliance. The primary obligations under this AD are twofold: the aircraft must adhere to the technical requirements outlined in DGAC AD 90-170-009 (B) Part 1 and Part 2. These parts specify the necessary actions to be taken, which include implementing checks and modifications to prevent water accumulation. Compliance with these requirements must be achieved before specific deadlines, with the first compliance date set for 13 February 1991 and the second for 13 November 1991. The directive notes that Dassault Aviation SBs F900-57, F900-82, and F900-83 provide further guidance on the necessary modifications. Failure to comply with the AD may result in significant consequences, both civil and criminal. The specific requirements set out in the AD are intended to ensure that all Model 900 aircraft meet the necessary safety standards. Non-compliance could potentially lead to aircraft being deemed unairworthy, which would have severe implications for flight operations. The exact penalties for non-compliance are not detailed in the provided text but could include fines, enforcement actions, or even the grounding of the affected aircraft until the required modifications are made. Ensuring compliance is crucial for maintaining the safety and airworthiness of the aircraft in question.