Narrative:

Just after takeoff I momentarily retarded the mixture control partially and inadvertently, causing me to believe for a moment that the engine was failing. I announced 'mayday, mayday' and turned back to the airport before I corrected the problem and continued the flight.

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Original NASA ASRS Text

Title: GA SMA PLT DECLARED AN EMERGENCY WHEN THE ENGINE STARTED TO FAIL DURING CLIMB OUT FROM PDK.

Narrative: JUST AFTER TKOF I MOMENTARILY RETARDED THE MIXTURE CTL PARTIALLY AND INADVERTENTLY, CAUSING ME TO BELIEVE FOR A MOMENT THAT THE ENG WAS FAILING. I ANNOUNCED 'MAYDAY, MAYDAY' AND TURNED BACK TO THE ARPT BEFORE I CORRECTED THE PROB AND CONTINUED THE FLT.

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.