Incident Description
After lift-off from a tow takeoff, the towplane was unable to attain the normal tow airspeed of 65 to 75 miles per hour and continued at about 55 miles per hour. The glider pilot thought the towplane was having engine problems. As the two aircraft circled the airport, the glider pilot released when he was sure the glider could make the airport.
Sequence of Events
After release, the glider lost airspeed and altitude quickly. The pilot attempted a forced landing into a corn field adjacent to the airport. During the landing, the pilot reached for the spoilers and realized that the spoilers had been extended throughout the takeoff.
Outcome
The glider made a forced landing into a cornfield. The pilot discovered that the spoilers had been extended for the duration of the flight, from takeoff through the landing attempt.