We’re still collecting data for this aircraft. Routes appear once we’ve seen it fly enough times.
The pilot's failure to attain a proper descent rate during the forced landing. Factors include: the pilot's failure to use an 'engine start' checklist, failure to turn the ignition switch to the 'on' position, failure to use the landing checklist, failure to lower the wing flaps, and lack of experience in this make and model aircraft.
Glaser-dirks DG-400