Aviation safety investigations & reports

Collision on runway between Grob G103 Twin Astir glider, VH-UIZ and Cessna 150F, VH-ROZ at Tocumwal Aerodrome, NSW on 9 March 2013

Investigation number:
Status: Completed
Investigation completed


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On 9 March 2013, two glider clubs were conducting gliding operations at Tocumwal aerodrome, New South Wales. A Grob G103 Twin Astir glider, registered VH‑UIZ (UIZ), was towed airborne, however, after a number of orbits looking for rising air, the pilot of UIZ tracked to return to the circuit and land. A few minutes later, a Cessna 150 registered VH‑ROZ (ROZ), became airborne towing a glider. ROZ and this glider were from one gliding club, UIZ from the other. Following the release, the pilot of ROZ turned left and tracked for a left downwind for runway 36L.

Witnesses on the ground reported hearing both pilots making all necessary CTAF broadcasts.

Just as ROZ touched down on runway 36L, the pilot felt a heavy jolt on the top of the cockpit and simultaneously heard a loud noise. Immediately, he saw the windscreen fill with the underside of a glider. He observed the glider continue down the runway at about 5 to 10 ft above ground level. The pilot was uninjured and, on exiting the aircraft, observed a wheel contact print on the top of the aircraft. The pilot of UIZ was uninjured and landed the glider well down the runway. On exiting the glider, the pilot observed damage on the left wing and fuselage.

As a result of this occurrence, the GFA has advised the ATSB that they will raise awareness of collision risk at non-towered aerodromes with its members through the Gliding Magazine and through its biennial Safety Seminars.

As a result of this occurrence, the operator of the glider tug has advised the ATSB that they are sourcing quotes for the fitment of FLARM collision warning system to their gliders and glider tug aircraft.

When operating outside controlled airspace, it is the pilot’s responsibility to maintain separation with other aircraft. For this, it is important that pilots utilise both alerted and unalerted see-and-avoid principles. Pilots should never assume that an absence of traffic broadcasts means an absence of traffic.

Aviation Short Investigation Bulletin Issue 19


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General details
Date: 09 March 2013   Investigation status: Completed  
Time: 13:26 ESuT   Investigation level: Short - click for an explanation of investigation levels  
Location   (show map): Tocumwal Aerodrome    
State: Victoria   Occurrence type: Collision with terrain  
Release date: 29 May 2013   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft 1 details

Aircraft 1 details
Aircraft manufacturer Cessna Aircraft Company  
Aircraft model 150  
Aircraft registration VH-ROZ  
Serial number 15063770  
Type of operation Sports Aviation  
Damage to aircraft Minor  
Departure point Tocumwal, NSW  
Destination Tocumwal, NSW  

Aircraft 2 details

Aircraft 2 details
Aircraft manufacturer Grob - Burkhart Flugzeugbau  
Aircraft model G103  
Aircraft registration VH-UIZ  
Serial number 3224  
Type of operation Gliding  
Damage to aircraft Substantial  
Departure point Tocumwal, NSW  
Destination Tocumwal, NSW  
Last update 14 November 2018