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On the morning of 27 August 2016, a Van’s RV-7 aircraft, registered VH-VTZ, and a Glaser-Dirks DG-400 motor-glider, registered VH-XJZ, were both prepared for flight from Gympie aircraft landing area (ALA), Queensland.

The motor-glider pilot taxied their aircraft from the Gympie ALA glider hangars and back-tracked on the grass alongside the main runway to the runway 14 threshold for take-off. At about the same time as the motor-glider was backtracking for take-off from runway 14, the pilot of the RV-7 taxied their aircraft from the general aviation hangars located at the other end of the airport. Both pilots made the required radio broadcasts on the correct frequency before entering runway 14, but neither pilot heard the broadcasts from the other pilot.

The motor-glider started the take-off roll from the threshold of runway 14 and as it approached take-off speed, the pilot noticed the top of another aircraft (RV-7) appear on the horizon. Both pilots applied their aircraft brakes and veered to their right. The pilots performed a radio check and verified they could hear each other and both were broadcasting on the correct frequency. They then proceeded on their planned flights without further incident.

A potential accident was avoided by the actions of both pilots who responded to the presence of the other aircraft by braking and veering to the right. Rather than continuing their flights with the assumption the other made a mistake, they performed a radio check with each other to verify there was no fault with their respective aircraft radios.


Aviation Short Investigations Bulletin - Issue 54

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General details
Date: 27 August 2016 Investigation status: Completed 
Time: 11:10 EST  
Location   (show map):Gympie (ALA) Investigation type: Occurrence Investigation 
State: Queensland Occurrence type: Near collision 
Release date: 22 November 2016 Occurrence class: Operational 
Report status: Final Occurrence category: Serious Incident 
 Highest injury level: None 
Aircraft 1 details
Aircraft manufacturer: Amateur Built Aircraft 
Aircraft model: VAN'S RV-7 
Aircraft registration: VH-VTZ 
Serial number: 73097 
Type of operation: Private 
Sector: Piston 
Damage to aircraft: Nil 
Departure point:Gympie, Qld
Destination:Watts Bridge, Qld
Aircraft 2 details
Aircraft manufacturer: Glaser-Dirks 
Aircraft model: DG-400 
Aircraft registration: VH-XJZ 
Serial number: 4-275 
Type of operation: Gliding 
Sector: Piston 
Damage to aircraft: Nil 
Departure point:Gympie, Qld
Destination:Monto, Qld
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Last update 18 April 2017