Aviation safety investigations & reports

Near collision due to runway incursion involving Van's RV-7, VH-VTZ, and Glaser-Dirks DG-400 motor-glider, VH-XJZ, at Gympie ALA, Queensland, on 27 August 2016

Investigation number:
Status: Completed
Investigation completed

Final Report

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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   Investigation level: Short - click for an explanation of investigation levels  
Location   (show map): Gympie (ALA)    
State: Queensland   Occurrence type: Near collision  
Release date: 22 November 2016   Occurrence category: Serious Incident  
Report status: Final   Highest injury level: None  

Aircraft 1 details

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 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  
Last update 14 November 2018