What happened
On March 24, 1998, at 13:20, a Solar Wings Pégasus XL-Q ultralight pendular aircraft, registered G-MWEH, was parked near the terminal building at Le Touquet aerodrome. The aircraft was part of a group of approximately thirty similar British aircraft gathered for a flight crew's departure on a world flight attempt. At the time of the incident, the aircraft's right wing was resting on the ground, and the support trestle was attached to the front guard tube.
The pilot attempted to start the engine. Following several unsuccessful attempts, the pilot removed his gloves and helmet and attempted a new start by positioning the power lever at full throttle. The engine suddenly started and immediately reached full RPM. This unexpected surge caused the aircraft to move forward and strike the corner of the terminal building with significant force. The impact caused the aircraft to pivot rapidly to the right, which ejected the pilot from the seat, where he was subsequently struck by the propeller. A witness was able to stop the engine, which had continued to run after the impact.
The investigation
The investigation established that the aircraft had experienced engine starting difficulties during its previous flight from the United Kingdom to France. Prior to attempting the return journey, the pilot had replaced the spark plugs.
Findings
- The primary cause of the accident was an improvised engine start procedure involving the use of full throttle.
- The sudden application of full power upon engine ignition led to an uncontrolled movement of the aircraft.
- The pilot sustained serious injuries during the event, and the Solar Wings Pégasus XL-Q sustained heavy damage.