Aviation safety investigations & reports

Schempp-Hirth Ventus A, VH-FQS, Alexander Schleicher ASW 20, VH-KYF, 3 km South of Benalla VIC, 12 January 1987

Investigation number:
198701416
Status: Completed
Investigation completed

Summary

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A large group of pilots were practicing for the forthcoming World Gliding Championships. There were a number of weak thermals in the area near the starting gate position, and there were several gliders in each thermal. The pilot of VH-FQS encountered a surge of lift and commenced to increase the angle of bank and pull up, achieving a climb rate of about 6 knots. Shortly afterwards, the canopy of this aircraft struck the wing of VH-KYF, which was at a climb rate of about 4 knots. The canopy was shattered, and the left flap of VH-KYF was broken in half. The pilots maintained control of their aircraft, and subsequently landed safely. Neither pilot had seen the other aircraft in the thermal prior to the collision. The competitive nature of the exercise and the large number of aircraft in the area combined to present an operational hazard to those involved.

Download Final Report
[Download  PDF: 22KB]
 
 
 
General details
Date: 12 January 1987   Investigation status: Completed  
Time: a) 1250 b) 1230    
Location: 3 km South of Benalla    
State: Victoria   Occurrence type: Airborne collision  
Release date: 29 April 1987   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft 1 details

Aircraft 1 details
Aircraft manufacturer Schempp-Hirth Flugzeugbau GmbH  
Aircraft model Ventus  
Aircraft registration VH-FQS  
Type of operation Gliding  
Damage to aircraft Minor  
Departure point Benalla VIC  
Departure time 1250  
Destination Benalla VIC  

Aircraft 2 details

Aircraft 2 details
Aircraft manufacturer Alexander Schleicher Segelflugzeugbau  
Aircraft model ASW-20  
Aircraft registration VH-KYF  
Type of operation Gliding  
Damage to aircraft Substantial  
Departure point Benalla VIC  
Departure time 1230