Narrative:

I was performing a test flight after recent maintenance. While circling [the airport] at approximately 2500 feet MSL; the engine ran rough for a brief second. I immediately throttled back and upon realizing that the engine was not developing power; turned off the mag switch. I was on an extended left downwind for runway xy at approximately 1800 feet AGL at this time. I turned off the fuel and preformed a successful on-field landing. Upon examining the aircraft discovered the propeller was missing and no further damage to the aircraft.

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Original NASA ASRS Text

Title: The pilot of a small airplane lost engine power in the pattern during a post maintenance test flight. He secured the engine and landed successfully.

Narrative: I was performing a test flight after recent maintenance. While circling [the airport] at approximately 2500 feet MSL; the engine ran rough for a brief second. I immediately throttled back and upon realizing that the engine was not developing power; turned off the mag switch. I was on an extended left downwind for runway XY at approximately 1800 feet AGL at this time. I turned off the fuel and preformed a successful on-field landing. Upon examining the aircraft discovered the propeller was missing and no further damage to the aircraft.

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.