Aviation safety investigations & reports

British Aerospace Plc BAe 146-300, VH-EWR

Investigation number:
Status: Completed
Investigation completed


The BAe146 and the SAAB 340B were on converging tracks. The air traffic controller responsible for their separation received an electronically generated Short Term Conflict Alert (STCA) on his display. The STCA was a warning to the controller that the predicted radar paths of the two aircraft may lead to a loss of separation standards. The required separation standard was 5 NM laterally or 1,000 ft vertically. By the time the controller took positive control and instructed the crew of the BAe146 to turn left for avoiding action, lateral separation had reduced to below the required standard. The crew of the SAAB received a Traffic Alert from their aircraft's traffic alert and collision avoidance system (TCAS).

Analysis of the radar data indicated that lateral separation between the two aircraft reduced to 2.4 NM and vertical separation to 500 ft. The controller did not use any separation assurance technique in his traffic management plan. He stated that he was used to working in a much busier air traffic environment: circumstances that would demand closer vigilance. At the time of the conflict, the controller was distracted from his primary task of providing a radar control service during a discussion with a TAAATS Flight Data Corrections (TFDC) officer over a minor administrative issue.

General details
Date: 11 November 2000   Investigation status: Completed  
Time: 1936 hours ESuT    
Location   (show map): West Maitland, (VOR)    
State: New South Wales   Occurrence type: Loss of separation  
Release date: 25 July 2001   Occurrence category: Incident  
Report status: Final   Highest injury level: None  

Aircraft 1 details

Aircraft 1 details
Aircraft manufacturer British Aerospace PLC  
Aircraft model BAe 146  
Aircraft registration VH-EWR  
Serial number E3195  
Type of operation Air Transport High Capacity  
Damage to aircraft Nil  
Departure point Sydney NSW  
Destination Brisbane, QLD  

Aircraft 2 details

Aircraft 2 details
Aircraft manufacturer S.A.A.B. Aircraft Co  
Aircraft model 340  
Aircraft registration VH-OLN  
Serial number 207  
Type of operation Air Transport Low Capacity  
Damage to aircraft Nil  
Departure point Coffs Harbour, NSW  
Destination Sydney, NSW  
Last update 13 May 2014