Narrative:

Several weeks ago I had made to purchase aircraft X.two weeks ago I had engaged [CFI a]; based upon recommendations; I was told to me by local pilots that [CFI a] would be a great tail wheel instructor.I engaged [CFI a] for the sole purpose of safety. I felt it was prudent to go up with an experienced instructor and get comfortable and current with the aircraft. It is a tail dragger.[in the morning during our flight; CFI a] was demonstrating a soft field takeoff at a private turf strip. The 2000 foot runway condition was recently mowed and dry. During the takeoff roll [CFI a] held the tail down; [CFI a] was unable to achieve sufficient airspeed during the takeoff roll. Two thirds down the runway he jerked the flaps from 0 to 30 degrees. The plane lifted off but the stall warning was sounding and the indicated airspeed was between 0 and 20 mph indicated. He was struggling to keep the plane aloft in the ground effect. We never got above 20 foot AGL and he was unable to gain any additional airspeed and eventually fully stalled the plane into the corn field about one half mile from our departure point. The engine was producing full power and the fuel was about 1/2 full in each tank. There were no injuries but significant damage was done to the airframe and power plant.[CFI a] was deep into the reverse region of command where there was no escape. He is used to having much more power available; which may have bailed him out; but not this time.we secured the aircraft and insured the ELT was not activated; electrical and fuel were secured.during the previous hour we had done several touch and goes at [this airfield and another]. He was behaving hyper and aggressive; performing very low altitude 60-80 degree turns and requesting me to perform the same; I wouldn't; it was nerve wracking flying with him but I felt I was getting some valuable instruction aside from his aggressive demeanor. In hindsight; I should have fired him as soon as he was complaining to me about following the pre-start checklist. He acted like I was wasting time. We had about 15 gallons of fuel total when we started to insure we were within weight and balance. We probably burned 5-7 gallons during our flight.

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Original NASA ASRS Text

Title: C150 pilot reported that; while receiving instruction on short field takeoffs; the instructor pilot stalled the aircraft into a corn field; damaging the aircraft.

Narrative: Several weeks ago I had made to purchase Aircraft X.Two weeks ago I had engaged [CFI A]; based upon recommendations; I was told to me by local pilots that [CFI A] would be a great tail wheel instructor.I engaged [CFI A] for the sole purpose of safety. I felt it was prudent to go up with an experienced instructor and get comfortable and current with the aircraft. It is a tail dragger.[In the morning during our flight; CFI A] was demonstrating a soft field takeoff at a private turf strip. The 2000 foot runway condition was recently mowed and dry. During the takeoff roll [CFI A] held the tail down; [CFI A] was unable to achieve sufficient airspeed during the takeoff roll. Two thirds down the runway he jerked the flaps from 0 to 30 degrees. The plane lifted off but the stall warning was sounding and the indicated airspeed was between 0 and 20 mph indicated. He was struggling to keep the plane aloft in the ground effect. We never got above 20 foot AGL and he was unable to gain any additional airspeed and eventually fully stalled the plane into the corn field about one half mile from our departure point. The engine was producing full power and the fuel was about 1/2 full in each tank. There were no injuries but significant damage was done to the airframe and power plant.[CFI A] was deep into the reverse region of command where there was no escape. He is used to having much more power available; which may have bailed him out; but not this time.We secured the aircraft and insured the ELT was not activated; electrical and fuel were secured.During the previous hour we had done several touch and goes at [this airfield and another]. He was behaving hyper and aggressive; performing very low altitude 60-80 degree turns and requesting me to perform the same; I wouldn't; it was nerve wracking flying with him but I felt I was getting some valuable instruction aside from his aggressive demeanor. In hindsight; I should have fired him as soon as he was complaining to me about following the pre-start checklist. He acted like I was wasting time. We had about 15 gallons of fuel total when we started to insure we were within weight and balance. We probably burned 5-7 gallons during our flight.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.