What happened
On March 31, 2023, at approximately 08:45 local time, an Aquila Aviation GmbH, AT01-100C, registered as HB-SGU, was conducting a training flight from Lommis Airfield (LSZT). The aircraft was operated by Motorfluggruppe Thurgau with one flight instructor and one student on board. Shortly after departing from the airfield, the aircraft was unable to gain altitude. To avoid a more serious incident, the pilot performed an emergency landing in a nearby meadow.
During the landing maneuver, the aircraft sustained significant damage, which subsequently led to an outbreak of fire. There were no injuries to the crew or any third parties involved in the incident.
The investigation
The Swiss Transportation Safety Investigation Board (SUST) initiated an inquiry into the event to determine the circumstances surrounding the loss of altitude and the resulting fire. The investigation focused on the flight sequence following takeoff and the mechanical or operational factors that prevented the aircraft from maintaining a positive rate of climb.