ASN Wikibase Occurrence # 284881
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| Date: | Friday 11 July 2008 |
| Time: | |
| Type: |  Aerospatiale AS 350B2 |
| Owner/operator: | Hélijet |
| Registration: | F-GFZC |
| MSN: | 2163 |
| Year of manufacture: | 1988 |
| Fatalities: | Fatalities: 0 / Occupants: |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Chambéry Aix-les-Bains Airport -
 France
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Grenoble-Alpes Isère Airport (GNB/LFLS) |
| Chambéry Airport (CMF/LFLB) | |
| Investigating agency: | BEA |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
After having passed the SW point of Chambéry Airport, the pilot asked the controller for authorization to land directly facing west near parking area S. His intention, given the irregularity and the force of the wind, was to land with a head or crosswind and shorten the translation distance. Due to the landing of F-GLRP on paved runway 18 at the same time, the controller refused and asked him to land on unpaved runway 18.
He finished his approach at the start of the runway then continued in ground effect towards the south in order to avoid F-GLRP which was taxiing towards the north on the taxiway. After the turn, when facing east, the pilot tried to decrease his speed by pitching up and increasing power. He then perceived the effect of the tailwind then a sinking of the helicopter.
The pilot increased the power but was unable to counter this. He indicates that he heared an increase in turbine speed. Assuming to be engaged in a vortex phenomenon, the pilot decided to reduce power and apply a nose-down attitude. The helicopter slid a few meters and came to a stop.
The pilot stopped the engine, switched off the electrical panel, braked the rotor then had his passengers evacuate before evacuating himself.
At the time of the accident, the region was on orange alert due to thunderstorms. The wind varied from 120° to 280° with an average speed of around 15 Kt and gusts to 35 Kt.
The effectiveness of the pitch controls reported by the pilot seems to indicate that the helicopter was not confronted with a vortex phenomenon. The presence of a tailwind requires additional power to reduce speed.
The pilot had flown 180 hours, including 38 on type and 2 in the previous three months.
Sources:
https://bea.aero/en/investigation-reports/notified-events/detail/perte-de-controle-au-cours-dun-vol-en-translation-heurt-du-rotor-anti-couple-avec-le-sol
History of this aircraft
Other occurrences involving this aircraft
| 6 April 2012 | F-GFZC | Trans Hélicoptère Service SA - THS | 6 | Région d’Agadez, Tenere desert |  |
w/o |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Oct-2022 10:02 | harro | Added |
Corrections or additions? ... Edit this accident description
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