Narrative:

We took off from on to do figure 8's on pylons. About 2/3 of the way through maneuver, my instructor smelled something burning. We turned back toward norman to land. The cabin began to fill with smoke and there was intense heat on our feet. My instructor flew the plane while I performed the cabin fire checklist. We landed in a field. On the landing roll we came to rest inverted. We both exited the left side of aircraft and walked to the nearest house to use the phone. Callback conversation with reporter revealed the following information: the student pilot said that the fire was created by a malfunctioning refurbished landing gear pump for this rag. The fire melted the plastic reservoir. The aircraft hit a washout area in the field and broke the nose gear. It was a flight school aircraft. The FBO is going after the refurbisher of the pump for damages.

Google
 

Original NASA ASRS Text

Title: A C172 WITH STUDENT AND INSTRUCTOR PLT MAKES AN EMER OFF ARPT LNDG WITH EVIDENCE OF INTENSE HEAT, FIRE AND SMOKE. ACFT OVERTURNED ON THE LNDG NEAR OUN, OK.

Narrative: WE TOOK OFF FROM ON TO DO FIGURE 8'S ON PYLONS. ABOUT 2/3 OF THE WAY THROUGH MANEUVER, MY INSTRUCTOR SMELLED SOMETHING BURNING. WE TURNED BACK TOWARD NORMAN TO LAND. THE CABIN BEGAN TO FILL WITH SMOKE AND THERE WAS INTENSE HEAT ON OUR FEET. MY INSTRUCTOR FLEW THE PLANE WHILE I PERFORMED THE CABIN FIRE CHKLIST. WE LANDED IN A FIELD. ON THE LNDG ROLL WE CAME TO REST INVERTED. WE BOTH EXITED THE L SIDE OF ACFT AND WALKED TO THE NEAREST HOUSE TO USE THE PHONE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE STUDENT PLT SAID THAT THE FIRE WAS CREATED BY A MALFUNCTIONING REFURBISHED LNDG GEAR PUMP FOR THIS RAG. THE FIRE MELTED THE PLASTIC RESERVOIR. THE ACFT HIT A WASHOUT AREA IN THE FIELD AND BROKE THE NOSE GEAR. IT WAS A FLT SCHOOL ACFT. THE FBO IS GOING AFTER THE REFURBISHER OF THE PUMP FOR DAMAGES.

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.