19990512005049A

Instructor and student pilot were practicing emergency procedures when the student pilot froze on the controls and the acft struck a berm, spun, caught fire, and burned, other circumstances are unknown. (.4) the airplane stalled & entered a spin (500 ft AGL) as the student pilot applied 'excessive left rudder' during a practice emergency landing. The flight instructor performed the emergency spin recovery procedures & stopped the spin at low altitude. The airplane struck a tree, impacted an embankment, and burst into flames. The instructor reported no mechanical problems with the aircraft. In the student's opinion, the accident could have been prevented with 'proper maintenance.' He reported that the controls 'froze up.' All flight controls were accounted for at the accident site. Flight control continuity was established from the primary flight control surfaces to their respective cockpit controls. All cockpit flap controls and indicators were destroyed. Due to impact damage, flap cable continuity could not be established. Examination of the right flap drive indicated that the flaps were up. A review of the maintenance records revealed no open aircraft discrepancies. (-23)the flight instructor said that the student used excessive rudder control during a turn to a practice engine out landing. The aircraft stalled and went into a spin. The flight instructor struggled to take control from the student pilot who said he thought the flight controls were stuck. The flight instructor recovered from the spin, but the aircraft struck a tree. The left wing was damaged, and the fuel tank was ruptured. The aircraft impacted nose first on the earthen dam of a pond and spun around, then the fuel caught fire. The instructor and student pilot suffered severe burns, and the student had a broken leg. The aircraft was destryoed. The fire was intense and burned away the cabin, fuselage, and left wing inboard of the wing strut.