AD/REC/3 - Sundstrand Cockpit Voice Recorders - Modification

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, represent a comprehensive regulatory framework designed to ensure the safety and efficiency of civil aviation within the country. Among its various provisions, Part 39 addresses airworthiness directives, ensuring that aircraft meet necessary safety standards. The legislation was introduced to address gaps in aircraft safety standards, particularly focusing on the reliability and accuracy of cockpit voice and flight data recorders. One specific directive under this legislation is AD/REC/3, which pertains to the modification of Sundstrand Cockpit Voice Recorders. This directive was established to rectify potential issues with these recorders, such as intermittent operation and erroneous self-test indications, thereby enhancing the overall safety and reliability of flight data recording systems. The Civil Aviation Safety Authority (CASA) is the enacting body responsible for issuing and enforcing these regulations. The policy objective behind AD/REC/3 is to ensure that Sundstrand Data Control Cockpit Voice Recorders operate reliably under all conditions, particularly addressing the risk posed by connectors with split-ring sockets that could cause intermittent operation. Compliance with this directive is critical to maintaining the integrity of recorded flight data, which is essential for accident investigation and prevention. The directive mandates specific modifications to the recorders in line with technical requirements outlined in relevant Sundstrand service bulletins, ensuring that these devices function correctly and consistently.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 107, mandates modifications to Sundstrand Cockpit Voice Recorders to ensure safety and reliability in civil aviation. This applies to specific models of Sundstrand Data Control Cockpit Voice Recorders, namely the AV-557, AV-557A, AV-557B, and AV-557C, requiring them to be modified according to the technical specifications outlined in the relevant service bulletins. This regulation is applicable nationwide within the Commonwealth of Australia, enforced by the Civil Aviation Safety Authority. The directive emphasises compliance with the specified technical modifications to address issues such as intermittent operation and erroneous self-test indications caused by connectors with split-ring sockets. The modifications must be completed within 2000 hours of time in service after 12 September 1983, with the directive becoming effective from 4 February 1993. Compliance with previous directives issued under CAO 107 AD/RAD/42 is recognised as sufficient for this directive.

Key Provisions

The Civil Aviation Regulations 1998, specifically Part 39 - 107, mandate the modification of Sundstrand Data Control Cockpit Voice Recorders (CVR) models AV-557, AV-557A, AV-557B, and AV-557C, to address potential issues with connectors under vibration conditions. According to section 1, these modifications must align with the technical requirements outlined in Sundstrand Data Control Service Bulletin No 012-0296-109 Revision 1 dated 18 June 1982, or later revisions, for specific part numbers. Section 2 similarly mandates compliance with Service Bulletin No 012-0129-113 Revision 1 dated 20 June 1982, or later revisions, for additional part numbers. These bulletins specify the necessary modifications to ensure the CVRs function reliably and accurately, preventing intermittent operation, erroneous self-test indications, and sensor or tape-off-reel problems. The Act imposes obligations on the operators and owners of aircraft equipped with the specified Sundstrand CVR models. They must ensure that the modifications are completed within 2000 hours of time in service after 12 September 1983, as per section 3. The modifications are not only intended to maintain the integrity and reliability of the recording systems but also to enhance flight safety by providing accurate and continuous recordings of cockpit conversations and flight data, which are crucial for post-incident investigations. The directive becomes effective on 4 February 1993, and compliance with the original directive, CAO 107 AD/RAD/42, is considered compliance with this directive. Failure to comply with the provisions of this directive can lead to significant consequences. Under the Civil Aviation Act 1988, non-compliance can result in both civil and criminal penalties. Civil penalties may include fines, and criminal penalties could lead to imprisonment. The maximum penalties are determined by the severity of the non-compliance and the potential impact on aviation safety. These legal ramifications underscore the importance of adhering to the specified modifications to ensure the continued airworthiness and safety of the affected aircraft.