Grob Astir CS77, Bordertown SA, 22 August 1987

198700743

Summary

The glider was being winch-launched from strip 36. During the launch, the left wingtip dropped into lush vegetation covering the strip. The glider rolled rapidly to the left around the wingtip, until it was inverted. It impacted heavily in this attitude and came to rest 96 metres from, and 15 metres to the left of the take-off point. A 15-20 knot north-easterly wind was blowing at the time and the right wing was seen to lift as the left wing contacted a reasonably heavy cover of dandelions which were 30-40 centrimetres tall. The pilot had activated the manual release and the winch operator stopped the launch when the glider adopted the acute roll angle, but both of these actions were too late for recovery to be achieved prior to impact. Due to soggy conditions, the gliding club had not used the strip for the previous 2 months, and had not mown the surface prior to recommencement of operations.

Occurrence summary

Investigation number 198700743
Occurrence date 22/08/1987
Location Bordertown
Report release date 03/11/1987
Report status Final
Investigation type Occurrence Investigation
Investigation status Completed
Mode of transport Aviation
Aviation occurrence category Loss of control
Occurrence class Accident
Highest injury level Serious

Aircraft details

Manufacturer Grob - Burkhart Flugzeugbau
Model G102
Registration VH-IKG
Serial number 1672
Operation type Gliding
Departure point Bordertown SA
Destination Bordertown SA
Damage Substantial