AD/RAD/47 Amdt 4 - Periodic Testing of ATC Transponders

Overview

The Civil Aviation Safety Regulations 1998, enacted by the Australian Parliament, form the foundation for ensuring the safety of air navigation and aircraft within Australia. One specific amendment, AD/RAD/47 Amdt 4, issued in 2016 by the Civil Aviation Safety Authority (CASA), targets the periodic testing of Air Traffic Control (ATC) transponders, a crucial component for air traffic management. This amendment was introduced in response to an unsafe situation identified in 2011, which required a regulatory update to maintain the safety and reliability of ATC transponders. The policy objective of this amendment was to ensure the continuing airworthiness of affected aircraft by updating and clarifying regulatory references, thus maintaining compliance with international standards set forth in the Convention on International Civil Aviation. The legislative instrument was made under the powers conferred by the Civil Aviation Act 1988, and it commenced on 23 March 2016.

Scope and Application

The AD/RAD/47 Amdt 4 issued under the Civil Aviation Safety Regulations 1998, applies to the airworthiness of aircraft fitted with air traffic control transponders, specifically targeting aircraft to which Part 42 of the Civil Aviation Safety Regulations 1998 applies. This amendment ensures the continued safety and compliance of these aircraft with air navigation requirements, as mandated by the Civil Aviation Act 1988. The AD operates nationally across Australia, aligning with the broader obligations of the State of Registry for the continuing airworthiness of aircraft as per Annex 8 to the Convention on International Civil Aviation. While the AD primarily addresses the technical requirements for air traffic control transponders, it does not impose additional burdens on aircraft outside the scope of Part 42, for which compliance requirements have transitioned to Civil Aviation Order 100.5. The instrument does not include any exclusions or exemptions beyond those specified in the Civil Aviation Safety Regulations 1998. It is a legislative instrument and, as such, can be amended or revoked by the Civil Aviation Safety Authority (CASA) under the authority conferred by the Civil Aviation Act 1988 and the Acts Interpretation Act 1901.

Key Provisions

The Civil Aviation Safety Regulations 1998 (CASR 1998) under section 98 of the Civil Aviation Act 1988 (the Act) empower the Governor-General to make regulations for air navigation safety, with regulation 39.001 allowing the Civil Aviation Safety Authority (CASA) to issue airworthiness directives (ADs) for aircraft or aeronautical products. In this case, AD/RAD/47 Amdt 4, issued in February 2016, serves to limit the applicability of previous ADs to aircraft governed by Part 42 of CASR 1998 and clarifies regulatory references. This AD is a legislative instrument, as per subsections 98(5B) and (5BA) of the Act, unless it specifically applies to a particular person, aircraft, or aeronautical product. The AD amends AD/RAD/47 Amdt 2, which was issued in 2011 to correct an unsafe situation on all air traffic control transponders. AD/RAD/47 Amdt 4 replaces the previous AD to ensure compliance with updated regulatory references. Under the AD, the State of Registry of an individual aircraft is mandated to ensure the continuing airworthiness of that aircraft, and must develop or adopt requirements to meet this obligation. For aircraft subject to Part 42 of CASR 1998, this includes ensuring compliance with the AD. The AD also aligns with international standards, as per Annex 8 to the Convention on International Civil Aviation, which places the responsibility for continuing airworthiness on the State of Design and requires them to provide necessary information to States of Registry. For those aircraft not subject to Part 42, compliance is transitioned to Civil Aviation Order 100.5. The AD also references the Acts Interpretation Act 1901, clarifying that the power to make, grant, or issue legislative instruments includes the power to repeal, rescind, revoke, amend, or vary such instruments. The AD imposes specific obligations on the parties it governs. Aircraft operators must ensure their air traffic control transponders comply with the updated regulatory references as specified in AD/RAD/47 Amdt 4. This involves periodic testing of the transponders as outlined in the AD, with any necessary maintenance or repairs to be carried out in accordance with the updated references. Operators must also maintain records of compliance with these requirements. CASA has the authority to conduct audits and inspections to ensure compliance with the AD. There are no specific offences or penalties outlined in the AD itself, but non-compliance with airworthiness directives can lead to serious consequences. Under section 59 of the Civil Aviation Act 1988, CASA can issue a notice requiring compliance with any airworthiness directive. Failure to comply with such a notice can result in civil penalties, including fines. Additionally, under section 78 of the Act, CASA can cancel the certificate of airworthiness of a non-compliant aircraft, grounding it until compliance is achieved. Criminal penalties may apply in cases of gross negligence or wilful misconduct, with potential imprisonment terms as provided under the Act.