Narrative:

Conducting a training flight with student; aircraft was airworthy and up to date on maintenance. All licenses are current. Pre-flight and engine run-up check ok. Performed practice in west practice area for approximately 1 hour at an altitude in accordance with far 91.119. Engine roughness enroute from west practice area back to home base airport 2;000 RPM at full throttle. All systems operating normal; loss of engine power was only indication. 0 FPM climb; level 2;000 MSL; 80 knots IAS. Carburetor heat on; engine roughness followed by engine failure. Engine failure emergency checklist procedures followed; restart of engine unsuccessful. In communication with approach; declared emergency; squawked 7770; instead of 7700. Aircraft secured for landing; fuel valve off; mixture full lean; throttle closed; [and] ignition off. Landed in cornfield with no damage to aircraft; persons; or property.

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Original NASA ASRS Text

Title: C150 instructor pilot experiences engine failure at 2;000 FT and lands safely in a corn field.

Narrative: Conducting a training flight with student; aircraft was airworthy and up to date on maintenance. All licenses are current. Pre-flight and engine run-up check OK. Performed practice in west practice area for approximately 1 hour at an altitude in accordance with FAR 91.119. Engine roughness enroute from west practice area back to home base airport 2;000 RPM at full throttle. All systems operating normal; loss of engine power was only indication. 0 FPM climb; level 2;000 MSL; 80 knots IAS. Carburetor heat ON; engine roughness followed by engine failure. Engine Failure Emergency Checklist procedures followed; restart of engine unsuccessful. In communication with Approach; declared emergency; squawked 7770; instead of 7700. Aircraft secured for landing; fuel valve OFF; mixture full lean; throttle closed; [and] ignition OFF. Landed in cornfield with no damage to aircraft; persons; or property.

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.