What was found
DURING TAKE OFF THE PILOT NOTICED REDUCED ENGINE POWER AND FELT ABNORMAL VIBRATION AND ENGINE SPUTTER. THE PILOT WAS ABLE TO RETURN TO THE AIRPORT AND MAKE A SAFE LANDING. UPON INSPECTION BY THE MECHANIC A FAILED #2 CYLINDER LOWER SPARK PLUG P/N REM38E WAS FOUND AND THE LEFT MAGNETO SLICK P/N 4371 S/N 13071175 P LEAD STUB WAS LOOSE AND WAS ABLE TO BE ROTATED. THE MAGNETO ONLY HAD 49 HOURS ON IT SINCE THE LAST 500 HOUR INSPECTION.