Narrative:

No narrative provided. Callback conversation with reporter revealed the following information: the pilot typed a narrative, but forgot to submit it with his ASRS report. Pilot had right rear exhaust valve break off. The engine had approximately 500 to 600 hours since overhaul. The pilot declared an emergency and landed at the nearest suitable airport, which was ZZZ. Maintenance changed the right rear cylinder and the aircraft was flown out of ZZZ, AFB.

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Original NASA ASRS Text

Title: C150 PLT HAD THE R REAR EXHAUST VALVE BREAK OFF. THE PLT LANDED AT THE NEAREST SUITABLE ARPT.

Narrative: NO NARRATIVE PROVIDED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE PLT TYPED A NARRATIVE, BUT FORGOT TO SUBMIT IT WITH HIS ASRS RPT. PLT HAD R REAR EXHAUST VALVE BREAK OFF. THE ENG HAD APPROX 500 TO 600 HRS SINCE OVERHAUL. THE PLT DECLARED AN EMER AND LANDED AT THE NEAREST SUITABLE ARPT, WHICH WAS ZZZ. MAINT CHANGED THE R REAR CYLINDER AND THE ACFT WAS FLOWN OUT OF ZZZ, AFB.

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.