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ASN Wikibase Occurrence # 209886
Last updated: 18 June 2020
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Time:18:16 UTC
Type:Silhouette image of generic as13 model; specific model in this crash may look slightly different
Schleicher ASK 13
Registration: OO-ZKO
C/n / msn: 13244
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Aircraft damage: Substantial
Location:Saint-Hubert Airfield (EBSH) -   Belgium
Phase: Landing
Departure airport:Saint-Hubert Airfield (EBSH)
Destination airport:Saint-Hubert Airfield (EBSH)
Investigating agency: AAIU Belgium
The student pilot was conducting his first solo flight under the supervision of his instructor (on the ground). The sailplane was seen flying the final leg with a normal glide path when suddenly, a few seconds before the touch down, the sailplane pitched down without any visible attempt to flare. The front underside of the fuselage brutally contacted the ground a few metres in front of the threshold.
Direct causal factor:
The student pilot not pulling back on the elevator control to flare, probably focused on the airspeed indicator.
Indirect causal factor:
Excessive or wrong manipulation of the air brakes handle (either inverted action or a slip by using the air brake instead of the elevator control) leading to a decrease in airspeed in very short final.
Possible contributing factors:
• Stress because of the first solo flight
• Other ‘weight and balance’ configuration than used on dual flights
• The low sun may change the perspective of the airport surroundings, leading the pilot to a wrong appreciation of his altitude.


Accident investigation:
Investigating agency: AAIU Belgium
Status: Investigation completed
Duration: 1 year and 11 months
Download report: Final report


Photo of OO-ZKO courtesy

Saint-Hubert (EBSH)
19 August 2015; (c) Peter Vercruijsse

Revision history:

25-Apr-2018 19:20 harro Added

Corrections or additions? ... Edit this accident description