Aviation safety investigations & reports

Twin Astir (Glider), VH-KYN, Whitwarta (10 km NW Balaklava) SA, 4 December 1984

Investigation number:
Status: Completed
Investigation completed


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After travelling 15 metres during a winch-launch the left wing-tip contacted the ground. The instructor immediately assumed control of the glider and applied right rudder and aileron but the left wing entered an oat crop on the edge of the strip. The tip then dug into soft soil, causing the glider to cartwheel and impact heavily on its nose 120 metres from the take-off position and 35 metres to the left of the centreline. The crop on the edge of the 15 metre wide strip was about 1 metre high and the glider's wing span was 17.5 metres. The student was experiencing difficulty learning to control the aircraft during take-off and following wing-tip contact with the ground both the instructor and the student stated that they made control inputs. Conditions during the day were hot and the instructor had been on duty for nearly ten and half hours.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 04 December 1984   Investigation status: Completed  
Time: 1919    
Location: Whitwarta (10 km NW Balaklava)    
State: South Australia   Occurrence type: Loss of control  
Release date: 27 May 1985   Occurrence category: Accident  
Report status: Final   Highest injury level: Minor  

Aircraft details

Aircraft details
Aircraft manufacturer Grob - Burkhart Flugzeugbau  
Aircraft model G103  
Aircraft registration VH-KYN  
Type of operation Gliding  
Damage to aircraft Substantial  
Departure point Whitwarta SA  
Departure time 1919  
Destination Whitwarta SA  
Last update 13 May 2014