What happened
On 20 October 2021, at approximately 19:00 local time, a Pilatus PC12-47E, registered as LX-JFX, was conducting a commercial flight under IFR conditions. The aircraft, operated by JetFly Aviation S.A. Luxembourg, was en route from Airfield Dieppe - St Aubin in France toward Airfield Brive – Souillac.
While the aircraft was performing its descent for the approach, it experienced a sudden and unexpected loss of both altitude and airspeed. This occurred during an abrupt manual maneuver performed by the crew. Despite the instability during the descent, the aircraft sustained no damage.
The investigation
The Swiss Transportation Safety Investigation Board (SUST) notified the relevant authorities regarding the incident, which took place in French airspace. Because the occurrence took place in France, the French Bureau d'Enquêtes et d'Analyses pour la sécurité de l'aviation civile (BEA) has taken responsibility for the investigation into the circumstances of the flight.