The aircraft was engaged on a training exercise with an experienced instructor and a student who was flying a twin-engined aircraft for the first time. A second student was seated in the rear of the aircraft. At the conclusion of the flight the aircraft landed at EIWT but, very shortly after touchdown, the nosewheel retracted fully and the main landing gear commenced retraction. The aircraft slid for some 250 metres on its nose and main gear along the runway. The propellers on both engines were damaged by strikes on the runway surface. There were no injuries.