Departure
The pilot-in-command initiated a takeoff from a 600-foot-long airstrip situated at a field elevation of 3,400 feet. The takeoff run was conducted downslope. During the takeoff, the pilot pulled the airplane off the ground by using the control stick and applying full flaps to the 40-degree position.
Loss of Climb Performance
After lifting off, the airplane did not climb. To avoid a hill, the pilot maneuvered around it. In an effort to gain airspeed, the pilot lowered the nose and reduced the flap setting to 20 degrees.
Collision with Terrain
Despite these actions, the airplane continued to descend. It flew into the ground, nosed over, and burned.