ASN Wikibase Occurrence # 194839
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| Date: | Wednesday 29 March 2017 |
| Time: | 13:40 LT |
| Type: | Sportinė Aviacija LAK-17A |
| Owner/operator: | Private |
| Registration: | F-CJJH |
| MSN: | 159 |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Chambéry Challes-les-Eaux (73) -
 France
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | Chambéry Challes-les-Eaux (LFLE) |
| Chambéry Challes-les-Eaux (LFLE) | |
| Investigating agency: | BEA |
| Confidence Rating: |  Accident investigation report completed and information captured |
The glider crashed. The pilot was killed.
Flight history.
The pilot took off by winching unpaved runway 32 (2) from Chambéry Challes-les-Eaux aerodrome to conduct a circuit flight. During winching, after the rotation, the club's chief pilot, who is in charge of the session and located at the starter, asks the pilot of the winch (3) by radio to accelerate the winch, then reiterates the request a few seconds later during the initial climb. While the glider is about 25 meters high, it tilts to the right, passes on the back and collides with the ground of the airfield.
3.6 Conclusion
Inappropriate handling of an anomaly detected during the winching of the glider led to a sudden increase in the load factor applied to the glider as the glider moved at low speed, resulting in a stall at low altitude.
Contributed to the accident:
The incorrect setting of the winching speed, below the speed recommended by the glider manufacturer, resulting from the use of an erroneous adjustment table which has not been the subject of appropriate checks for use of the winch in security.
The technical documentation of the winch, which does not make it possible to establish an explicit link between the winch settings and the flight manual data of each glider.
A drift in the application of emergency procedures in case of detection of an anomaly as provided for by the FFVV
An attitude of climb attitude by the pilot at a speed lower than that recommended by the flight manual of the glider.
An absence of pilot reaction to the abnormal situation encountered during winching.
In addition, the ergonomics of the winch control may have contributed to accelerations and voltage variations of the cable, in response to requests for speed variation, which probably triggered the stall.
Accident investigation:
 |
|
Sources:
https://www.bea.aero/les-enquetes/les-evenements-notifies/detail/event/accident-du-planneur-lak17-a-immatricule-f-cjjh-survenu-le-29032017-a-chambery-73/
Bea report: https://www.bea.aero/uploads/tx_elydbrapports/BEA2017-0153.pdf
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Apr-2017 18:40 | Alpine Flight | Added |
| 19-Jan-2018 07:20 | Iceman 29 | Updated [Time, Location, Phase, Departure airport, Destination airport, Source, Narrative] |
| 19-Jan-2018 17:50 | harro | Updated [Source] |
Corrections or additions? ... Edit this accident description
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