AD/RAD/53 - Australian Domestic Distance Measuring Equipment

Administered by Department of Infrastructure, Transport, Regional Development, Communications, Sport and the Arts

Legislation au F2006B06510 Not in force Legislative Instrument

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

 


Radio Communication and Navigation Equipment

 

AD/RAD/53 Australian Domestic Distance Measuring Equipment

Applicability: All Australian Domestic Distance Measuring Equipment (DME-A).

 

Requirement: Either remove the system from the aircraft or disable the system to prevent its operation.

 

Compliance: Prior to 1 January 1996.


4/95

 

Background: DME-A operates in the 200 MHz band and this band will not be available for use by aeronautical navigation services after 31 December 1995.

 

DME-A ground beacons will not provide a reliable service after 7 December 1995 and will be progressively decommissioned from that date.

 

Compliance with this Directive will prevent airborne DME-A systems generating radio interference in the 200 MHz band.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overview

The Civil Aviation Regulations 1998, enacted by the Parliament of Australia, form a comprehensive framework governing various aspects of civil aviation in Australia. One particular legislative instrument, F2006B06510, pertains to the Civil Aviation Safety Authority's Schedule of Airworthiness Directives, specifically addressing radio communication and navigation equipment. This legislation was introduced to address the obsolescence of Australian Domestic Distance Measuring Equipment (DME-A) operating in the 200 MHz band, which was no longer available for aeronautical navigation services post-1995. The policy objective of this directive is to ensure that airborne DME-A systems are either removed from aircraft or disabled to prevent radio interference in the specified frequency band, given that the ground beacons for DME-A would cease to provide a reliable service by late 1995.

Scope and Application

The Civil Aviation Regulations 1998, specifically Part 39 - 107, mandates the application of Airworthiness Directives concerning Australian Domestic Distance Measuring Equipment (DME-A) through the Airworthiness Directive AD/RAD/53. This legislation applies to all aircraft within Australia that are equipped with DME-A systems, requiring either the removal of the system from the aircraft or its disabling to prevent operation. This directive is necessary as DME-A operates in the 200 MHz band, which will cease to be available for aeronautical navigation services after 31 December 1995. The directive further notes that DME-A ground beacons will no longer provide reliable service after 7 December 1995 and will be phased out, necessitating compliance with the directive to avoid airborne DME-A systems causing radio interference in the 200 MHz band. The directive must be complied with before 1 January 1996, ensuring that any DME-A systems are rendered inoperative in line with the specified timeline.

Key Provisions

The Civil Aviation Regulations 1998, under Part 39, specifically address the airworthiness directives related to radio communication and navigation equipment, including Australian Domestic Distance Measuring Equipment (DME-A) in AD/RAD/53 (paragraph 107.4/95). This directive applies to all DME-A systems in Australian aircraft, requiring either the removal of the system from the aircraft or disabling it to prevent operation before 1 January 1996. The directive aims to prevent airborne DME-A systems from generating radio interference in the 200 MHz band, which will no longer be available for aeronautical navigation services after 31 December 1995. Additionally, DME-A ground beacons will cease to provide a reliable service from 7 December 1995 and will be decommissioned progressively thereafter. Operators and owners of aircraft equipped with DME-A systems must ensure compliance with this directive by either removing the equipment or ensuring it is disabled before the specified date. This includes taking necessary steps to prevent the operation of the DME-A systems to avoid any potential interference with the 200 MHz band. The directive clearly outlines the actions that need to be taken to maintain compliance with civil aviation safety standards. It is imperative for all parties involved to adhere to these provisions to ensure the continued safety and efficiency of aeronautical navigation services. Failure to comply with the airworthiness directive AD/RAD/53 may result in significant consequences. The primary concern is the potential for radio interference in the 200 MHz band, which could disrupt navigation services and compromise safety. Although the regulations do not explicitly state the penalties for non-compliance, violations of civil aviation safety directives generally attract severe consequences. This could include enforcement actions by the Civil Aviation Safety Authority, fines, or other regulatory sanctions. It is crucial for operators and owners to understand the importance of adhering to these directives to avoid any legal repercussions or safety hazards. Given the critical nature of radio communication and navigation equipment in aviation, the consequences of not complying with AD/RAD/53 are potentially severe. The Civil Aviation Safety Authority is responsible for enforcing compliance, and failure to adhere to the directive could result in operational restrictions or grounding of the aircraft until the equipment is compliant. Additionally, there could be implications for airworthiness certificates and insurance coverage if the aircraft is found to be operating with non-compliant equipment. It is therefore essential for all stakeholders to take the directive seriously and ensure full compliance to maintain the highest safety standards in civil aviation.

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.