Night VFR Cross-Country Flight Ends with Terrain Contact on Ridge

Accident Details

A student pilot and his instructor were returning to their home airport after a visual flight rules (VFR) night cross-country instructional flight. During the final segment of the flight, as the student was descending toward the airport, the airplane's wheels contacted terrain on a ridge approximately nine miles from the planned destination. The ridge was about 1,650 feet higher than the airport elevation. The airplane initially rolled across the terrain at a high rate of speed before encountering the elevated edge of a dirt road. Contact with the road edge resulted in a loss of control and further impact with the terrain. This sequence of events caused substantial damage to the airplane's fuselage.

Environmental Conditions

The sky was clear with no restrictions to visibility. However, it was a dark night with no moonlight, and neither pilot saw the terrain prior to the accident.

Pilot Observations

The instructor pilot did not specifically recall an unusual rate of descent or any sensation of the airplane sinking. He expressed the opinion that a "mountain wave downwash" may have contributed to the accident.