Recommendation R20000181

Recommendation issued to: Civil Aviation Safety Authority

Recommendation details
Output No: R20000181
Date issued: 24 April 2001
Safety action status:
Background: Why this Recommendation was developed

Output text

The Australian Transport Safety Bureau recommends that the Civil Aviation Safety Authority mandate the fitment and use of an Airborne Collision Avoidance System in all aircraft with a passenger seating capacity of 10 - 30 seats engaged in Regular Public Transport operations and set a timetable for the introduction of such equipment.

Initial response
Date issued: 13 December 2000
Response from: Civil Aviation Safety Authority
Action status: Closed - Not Accepted
Response text:

I refer to the draft ASO Report on the traffic confliction incident involving Beech 1900, VH-IMA, Beech 1900, VH-IMH, Piper PA-31 (Chieftain) VH-SVV, and De Havilland DHC-8-201 (Dash 8), VH-TQO, which occurred near Port Macquarie, NSW on 28 April 1999.

The Civil Aviation Safety Authority does not agree with recommendations R20000181 and R20000182, but supports recommendations R20000184, R20000198 and R20000199. R20000183 is still being considered.

I am concerned that in making the recommendations contained in R20000181 and R20000182, the ATSB has not recognised either the limitations of ACAS equipment or the fact that such recommendations cannot be justified on a cost-benefit basis. A detailed report on this aspect of the incident is attached, which has been prepared by the CASA officer who is the current Australian member of the ICAO Secondary Surveillance Radar Improvements and Collision Avoidance Systems Panel.

CASA is, at this stage, still considering R20000183 and is currently reviewing mandatory requirements for the carriage and activation of transponders. Although the current level of transponder fitment in the Australian fleet is high, it is accepted that a higher level of fitment and mandatory requirements for activation of transponders where TCAS-equipped aircraft are operating would enhance safety.

With regard to recommendation R20000184, recent articles in Flight Safety Australia have highlighted both the use of transponders generally and the specific transponder requirements for the effectiveness of TCAS. CASA will continue to encourage all levels of industry to a greater level of understanding of the importance of transponder activation.

With regard to recommendation R20000198, CASA currently audits air transport operations to ensure that safety management systems are established and maintained, and the new regulations (CASR Part 119) being developed will introduce more stringent requirements to ensure that such matters are addressed in the standard operating procedures of all air transport companies.

With regard to recommendation R20000199, CASA is currently reviewing all pilot licensing requirements within the context of the new CASR Part 61. Competency based standards are being progressively introduced to ensure that all pilots have an adequate knowledge of operational subjects, including separation assurance techniques.

Last update 05 April 2012