MOMENTARY REDUCTION OF ENGINE POWER.

Narrative

I WAS BREAKING IN A NEW ENG ON ONE OF OUR SMA'S IN EASTERN CO. I WAS OVER A SPARSELY POPULATED AREA. WHEN LOOKING DOWN TOWARDS THE GND I SAW WHAT APPEARED TO BE A HUMAN BODY LAYING ON THE EDGE OF A GRAVEL/DIRT COUNTY ROAD. THINKING THIS MIGHT BE AN INCIDENT OF A RECENT CAR-PEDESTRIAN HIT AND RUN ACCIDENT; I DSNDED FOR A CLOSER OBSERVATION. WHEN GOING DOWN THE ENG WAS ROUGH SOUNDING AND THEN IT SPUTTERED AND I LOST PWR CAUSING ME TO GO LOWER THAN ANTICIPATED OR NECESSARY FOR THE OBSERVATION. I IMMEDIATELY CHKED FUEL SELECTOR AND ENRICHENED THE GAS/AIR MIXTURE AND THE ENG RESPONDED WITH PWR AND RAN SMOOTHLY. I REGAINED MY ALT AND MADE A PROPER OBSERVATION AND IDENT. MY PROB WAS THAT I LEANED OUT THE GAS/AIR MIXTURE AT MY CRUISE ALT TO BEING LEANER THAN EXPECTED. WHEN PULLING THE MIXTURE CONTROL TO THE AFT POS AS I HAVE ON THAT AIRPLANE IN THE PAST; AND LISTENING FOR ENG ROUGHNESS AND THEN PUSHING FORWARD THE CONTROL; IT WAS QUITE LEAN. BECAUSE I WAS THINKING ABOUT A HUMAN BODY LAYING ON A ROAD AND GETTING EMER MEDICAL AID TO IT; I FAILED TO ENRICHEN MY MIXTURE DURING THE DSCNT AND MY ENG WAS STARVING FOR THE PROPER GAS/AIR RATIO MIXTURE. NEW ENG BREAK IN FLTS SHOULD BE JUST THAT AND NO OTHER DUTIES SHOULD BE INVOLVED. IT IS A TIME TO BECOME FAMILIAR WITH THE NEW ENG BECAUSE THERE MAY BE DIFFERENT ADJUSTMENTS; IE; CARB SETTINGS; FROM WHAT THE PLT IS USED TO ON PAST PERFORMANCE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: RPTR FELT HE SHOULD HAVE KEPT CONCENTRATION ON TASK OF CHKING NEW ENG. AS STATE TROOPER HOWEVER; OBSERVATIONS OF THE UNUSUAL ARE NORMAL PROC TOO. WHAT RPTR OBSERVED WAS A BLANKET ROLL.