What happened
On 9 December 2017, a student pilot was conducting a solo general handling flight in a Skyranger Nynja 912s, registration G-CGWL, at Plaistow Farm Airfield, Hertfordshire. The pilot had previously completed a successful dual circuit check with an instructor earlier that morning.
Following takeoff from Runway 30, witnesses observed the aircraft climbing steeply to an altitude between 100 and 300 feet. During this climb, the left wing dropped, causing the aircraft to turn left and descend in a steep, nose-down attitude. The aircraft struck the ground on Runway 15/33, approximately 130 metres from the threshold. The impact resulted in the fatal injury of the pilot and the destruction of the aircraft.
The investigation
An AAIB investigation examined the wreckage, the engine, and the aircraft's flight data. The engine and fuel systems were found to be in good working order, with no evidence of power loss or mechanical failure. The fuel contained appropriate ethanol levels, and the engine parameters recorded on the Multi-Function Display (MFD) showed no exceedances prior to the accident.
Investigators also reviewed the pilot's training records, which indicated steady progress, though his most recent stall recovery training had taken place seven months prior. While the aircraft was lighter than during the previous dual flight—which would have enhanced performance and potentially led to a steeper climb—the investigation could not definitively determine the exact reason for the steep pitch attitude.
Findings
- The aircraft was well-maintained and the engine was functioning normally at the time of the accident.
- The aircraft stalling was the primary cause of the accident.
- The increased performance resulting from the reduced weight of a solo flight may have led to a steeper climb than anticipated.
- It is possible that insufficient right rudder was applied to counteract engine torque, leading to the observed left wing drop during the stall.
- The low altitude at the time of the stall likely left insufficient height for the pilot to execute a recovery.