AD/DH114/19 - Engine Fire Extinguisher Discharge Nozzle - Inspection

Overview

The Civil Aviation Regulations 1998, as amended, form a comprehensive regulatory framework designed to ensure the safety and efficiency of civil aviation within Australia. Specifically, Part 39 - 105 of the Civil Aviation Regulations addresses the issuance of Airworthiness Directives, which are mandatory orders issued by the Civil Aviation Safety Authority (CASA) to address safety issues and ensure the continued airworthiness of aircraft. One such directive, AD/DH114/19, pertains to the inspection of the nozzle on engine fire extinguishers for the DH114 (Heron) series aeroplanes, aiming to mitigate the risk of engine fires. This directive was enacted to address the specific safety concerns associated with the engine fire extinguishing system on these aircraft, ensuring compliance with stringent safety standards and minimising potential hazards during flight operations.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 105, encompasses a schedule of airworthiness directives issued by the Civil Aviation Safety Authority. These directives are imperative for ensuring the safety and airworthiness of aircraft operating within Australia, with this particular directive, AD/DH114/19, focusing on the Heron Series Aeroplanes. The directive mandates a thorough inspection of the engine fire extinguisher discharge nozzles on all models of the Hawker Siddeley TNS Heron (114) aeroplanes, with serial number M6. The directive applies to both installed engines and spare engines, requiring that installed engines undergo inspection within 100 hours of time in service from 15 June 1967, while spare engines must be inspected prior to installation after the same date. The directive applies nationwide and is overseen by the Civil Aviation Safety Authority, ensuring compliance with safety standards across all relevant operators and entities. There are no stated exclusions or exemptions within the text, and the application of this directive extends to all Heron Series Aeroplanes operating within the Australian jurisdiction.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 105, mandate the Civil Aviation Safety Authority (CASA) to issue airworthiness directives to ensure the safe operation of aircraft. Under section 105.015, the regulations allow CASA to issue specific directives concerning various aspects of aircraft maintenance and operation. One such directive, AD/DH114/19, focuses on the inspection of the NK nozzle on the engine fire extinguisher of the DH114 (Heron) series aeroplanes (section 105.010). This directive applies to all models of the DH114 series (section 105.015(1)). According to the directive, installed engines must be inspected within 100 hours of time in service from 15 June 1967, while spare engines must be inspected before installation after this date (section 105.015(2)). Entities governed by these regulations, such as aircraft operators, must comply with the stipulated inspection requirements for the NK nozzle on the engine fire extinguisher of the DH114 series aeroplanes. This includes ensuring that the inspection is carried out within the specified timeframe for installed engines and before installation for any spare engines. The regulations impose a duty on these entities to maintain the airworthiness of their aircraft by adhering to the CASA directives. This involves conducting the necessary inspections, recording them appropriately, and ensuring that any identified issues are addressed promptly to maintain compliance with safety standards (section 105.015(3)). Failure to comply with the airworthiness directives can result in serious consequences. Under section 105.015(4), non-compliance with the inspection requirements may lead to enforcement actions by CASA. This can include the imposition of fines, legal action, and potential grounding of the aircraft until compliance is achieved. The exact penalties for breaches of these regulations are not specified in the document but can include significant financial penalties and other regulatory sanctions as determined by CASA. The severity of these consequences underscores the importance of adhering to the airworthiness directives to ensure the safe operation of the DH114 series aeroplanes (section 105.015(5)).