Narrative:

Engine start running rough at 55 percent power at 5500 ft cruise. Continued right despite various power and mixture settings, changed tanks, low/high boost on fuel did not help. Roughness worsened and altitude could not be maintained. Landed in pasture gear down. On roll out nose gear hit small ditch and collapsed into nose wheel well. No other damage to airframe. No injuries. Propeller bent slightly. Some oil mist on windscreen.

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Original NASA ASRS Text

Title: LOSS OF PWR IN SINGLE ENG SMA CAUSED FORCED LNDG OFF ARPT. MINOR DAMAGE TO ACFT.

Narrative: ENG START RUNNING ROUGH AT 55 PERCENT PWR AT 5500 FT CRUISE. CONTINUED R DESPITE VARIOUS PWR AND MIXTURE SETTINGS, CHANGED TANKS, LOW/HIGH BOOST ON FUEL DID NOT HELP. ROUGHNESS WORSENED AND ALT COULD NOT BE MAINTAINED. LANDED IN PASTURE GEAR DOWN. ON ROLL OUT NOSE GEAR HIT SMALL DITCH AND COLLAPSED INTO NOSE WHEEL WELL. NO OTHER DAMAGE TO AIRFRAME. NO INJURIES. PROP BENT SLIGHTLY. SOME OIL MIST ON WINDSCREEN.

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.