BEA - Office of Investigations and Analysis for Civil Aviation Safety of the French Republic
BEA - Office of Investigations and Analysis for Civil Aviation Safety of the French Republic
04/21/2023 | Press release | Distributed by Public on 04/21/2023 08:59
Accident to the Guimbal Cabri G2 registered F-HGRE on 18/02/2022 at Grenoble-Isère AD
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Accident to the Guimbal Cabri G2 registered F-HGRE on 18/02/2022 at Grenoble-Isère AD
Loss of yaw control in hover taxi, collision with a pylon, in solo instruction
Investigation progression Closed
Progress: 100%
When the student-pilot joined the long final for Grenoble-Isère airport, the aerological conditions were changing. The wind was picking up and changing direction, and this was accompanied by turbulence and strong gusts. These gusts were not forecast for the flight window in the morning's TAF message.
When hover taxiing to the parking point, with a crosswind from the right, the helicopter started to turn on its yaw axis to the left. The student-pilot initially applied right rudder without reaching the stop, but was unable to counteract the movement. The left yaw rotation was then accentuated by the pilot pulling on the collective pitch lever to get away from the ground, then by the left rudder input made by the pilot, who was probably disoriented by the high yaw rate. After several turns, the helicopter collided with a pylon and fell vertically to the ground.
General information| Local date | 18/02/2022 |
| Responsible entity | France - BEA |
| Scope of Investigation | Full (Annex 13) type investigation |
| State or area of occurrence | Europe and North Atlantic - France - 38 Isère |
| Location | Grenoble-Isère AD |
| Human consequences | Serious |
| Number of serious injuries | 1 |
| Aircraft consequences | Destroyed |
| Occurrence class | Accident |
| Occurence category | LOC-I: Loss of control - inflight |
| File number | BEA2022-0055 |
| Aircraft category | Rotorcraft - Helicopter - Small/light Helicopter - Small Helicopter |
| Operator | France - Other (HBG France) |
| Manufacturer / Model | GUIMBAL - CABRI |
| Aircraft Registration | F-HGRE |
| State of registry | France |
| Last departure point | France - LFLG : Grenoble Le Versoud |
| Planned destination | France - LFLS (GNB): Grenoble Isère |
| Flight phase | Taxi |
| Serial number | 1287 |
| Operator Type AG | Flying club/school |
| Operation Type | Non-Commercial Operations - Flight Training/Instructional - Solo |
BEA is the French air safety investigation authority for civil aviation. The sole objective of the investigation is to improve air safety. It is intended neither to apportion blame nor to assess responsiblity.