Narrative:

During the takeoff run of about 1000 ft or more, the aircraft started to lift off. The aircraft would not climb out of ground effect. Realizing I would probably stall way beyond the airport, I let the aircraft go into the soft marsh off the end of the runway. There was no wind at the time of takeoff roll. I think a tailwind developed just at liftoff.

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Original NASA ASRS Text

Title: AN A23 SINGLE PLT WAS UNABLE TO LIFT OFF FROM ILG AND ENDED UP IN A MARSH AT THE END OF THE RWY.

Narrative: DURING THE TKOF RUN OF ABOUT 1000 FT OR MORE, THE ACFT STARTED TO LIFT OFF. THE ACFT WOULD NOT CLB OUT OF GND EFFECT. REALIZING I WOULD PROBABLY STALL WAY BEYOND THE ARPT, I LET THE ACFT GO INTO THE SOFT MARSH OFF THE END OF THE RWY. THERE WAS NO WIND AT THE TIME OF TKOF ROLL. I THINK A TAILWIND DEVELOPED JUST AT LIFTOFF.

Data retrieved from NASA's ASRS site as of July 2007 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.