Narrative:

I was approaching sig field from the northwest and entered a left downwind for runway 36 while calling a pattern for runway 18. The wind was out of 200 degrees. I touched down mid-field with a 17 KT tailwind and proceeded to slow the plane down with roughly 800 ft left. I started to get a little worried that we weren't going to stop in time. At the edge of the field, just feet of coming to a full stop, the plane went through a metal and barbed wire fence and the nose dropped about 3 1/2 ft down a ditch. I and my 1 passenger exited the plane unaided with no injury.

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Original NASA ASRS Text

Title: AN SMA PVT PLT GOES OFF THE END OF RWY 36 WHEN MAKING A LNDG PROC DOWNWIND LNDG AT SIG FIELD, 7C5, IA.

Narrative: I WAS APCHING SIG FIELD FROM THE NW AND ENTERED A L DOWNWIND FOR RWY 36 WHILE CALLING A PATTERN FOR RWY 18. THE WIND WAS OUT OF 200 DEGS. I TOUCHED DOWN MID-FIELD WITH A 17 KT TAILWIND AND PROCEEDED TO SLOW THE PLANE DOWN WITH ROUGHLY 800 FT LEFT. I STARTED TO GET A LITTLE WORRIED THAT WE WEREN'T GOING TO STOP IN TIME. AT THE EDGE OF THE FIELD, JUST FEET OF COMING TO A FULL STOP, THE PLANE WENT THROUGH A METAL AND BARBED WIRE FENCE AND THE NOSE DROPPED ABOUT 3 1/2 FT DOWN A DITCH. I AND MY 1 PAX EXITED THE PLANE UNAIDED WITH NO INJURY.

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.