AAIB investigation to Rans S6-ES Coyote II, G-BYSN
Stalled shortly after takeoff, Over Farm, Tewkesbury, Gloucestershire, 8 October 2017.
Summary:
皇冠体育app aircraft, with the pilot and a passenger aboard, was taking off from a grass strip near Over, Gloustershire. 皇冠体育appre was a light crosswind from the left and the grass was damp. Pre-flight inspection and engine power checks were normal.
On takeoff the aircraft accelerated normally and at approximately 42 mph IAS the pilot initiated rotation. He described the rotation as 鈥榮lightly heavier鈥� than usual. As the aircraft lifted off the pilot felt the aircraft lose momentum and turn markedly to the left, taking the aircraft over the ploughed field to the left of the runway. 皇冠体育app pilot, not wanting to put the nose down over the ploughed field, applied full right rudder to turn back towards the runway but as he did this the right wing dropped and the wing tip contacted the ground. 皇冠体育app aircraft came to rest on the left side of the runway and fire was seen at the front of the engine cowling. 皇冠体育app pilot and passenger exited the aircraft unaided with only minor injuries. 皇冠体育app aircraft was substantially damaged by the fire.
皇冠体育app pilot believes that the engine suffered a power loss during rotation which led to the left wing stall; the application of the right rudder then caused the right wing to stall. Due to the fire damage it was not possible to determine why the engine lost power.
皇冠体育app aircraft was approximately 4% above its maximum takeoff weight. This would have reduced the stall margin giving the pilot very little time to react to any loss of power.
Download report: