ASN Wikibase Occurrence # 238828
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| Date: | Tuesday 28 July 2020 |
| Time: | c. 15:45 |
| Type: |  Bücker Bü-131APM Jungmann |
| Owner/operator: | Groupe de vol à moteur de la Gruyère |
| Registration: | HB-UVB |
| MSN: | 39 |
| Year of manufacture: | 1939 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Gruyères Airfield (LSGT), Epagny, Freiburg -
 Switzerland
|
| Phase: | Approach |
| Nature: | Private |
| Departure airport: | Gruyères Airfield (LSGT) |
| Gruyères Airfield (LSGT) | |
| Investigating agency: | STSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
After an unstabilized landing on runway 35, the pilot decided to take off again. During the initial phase of the take-off, the aircraft struck trees in a clearing on the right.
Analysis and Conclusions
The pilot decided to undertake the flight in an unstable atmosphere with a moderate westerly wind that strengthened during the initial approach. As a result, the circuit for runway 35 had to be flown in turbulent conditions. Not surprisingly, the landing became more difficult due to the crosswind component. As a result, the pilot wisely decided to overshoot when he realized that the landing was not guaranteed.
The forward visibility, especially on the climb path, after take-off or go-around is limited on the Bücker. Pilots of this aircraft are accustomed to tilting their heads to the left to obtain forward visibility. During the go-around of HB-UVB, the pilot did not notice the dangerous drift to the right side of the runway due to the strong crosswind component.
As a result, the collision with the trees bordering the runway took him completely by surprise.
The accident was caused by a collision with the trees on the right side of runway 35 due to an unnoticed lateral deviation during a go-around in a crosswind.
Accident investigation:
 |
|
Sources:
https://www.bote.ch/nachrichten/panorama/flugzeug-im-greyerzerland-abgestuerzt;art46441,1255553
https://www.pilatustoday.ch/schweiz/flugzeug-touchiert-bei-landung-baumspitze-138597326
https://www.sust.admin.ch/inhalte/AV-berichte/HB-UVB.pdf
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 30-Jul-2020 06:35 | gerard57 | Added |
| 30-Jul-2020 10:14 | RobertMB | Updated [Time, Aircraft type, Registration, Cn, Operator, Location, Phase, Destination airport, Source, Narrative] |
| 30-Jul-2020 10:17 | RobertMB | Updated [Location] |
| 30-Jul-2020 14:52 | gerard57 | Updated [Narrative] |
| 13-Aug-2020 07:46 | harro | Updated [Location, Departure airport, Destination airport, Source, Damage, Narrative] |
| 13-Aug-2020 07:46 | harro | Updated [Registration, Location] |
| 06-Dec-2021 20:54 | harro | Updated [Narrative, Accident report] |
Corrections or additions? ... Edit this accident description
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