GA ACFT ON SHORT BASE TO FINAL PERFORMS A GAR WHEN RPTR'S PA34 IS ON THE TKOF ROLL AT UYF; OH.

Narrative

I WAS HOLDING SHORT OF THE ACTIVE RWY; CHKED THE FINAL APCH; NO TFC. I WAS AWARE OF 1 AIRPLANE IN THE PATTERN WHO HAD ANNOUNCED DOWNWIND. I LOOKED ON THE DOWNWIND; NO TFC. I ASSUMED THEY WERE JUST TURNING DOWNWIND. AS I CROSSED THE HOLD SHORT LINE; I NOTICED THE 'DOWNWIND' AIRPLANE STARTING HIS BASE TURN. IT STILL APPEARED TO BE NO FACTOR; BUT CLOSER THAN I LIKE; SO I EXPEDITED MY TKOF RATHER THAN STOP PAST THE HOLD SHORT AND RISK A TECHNICAL RWY INCURSION. AS I CLBED OUT I HEARD THAT THE OTHER AIRPLANE WENT AROUND. THIS SURPRISED ME BECAUSE IT REALLY APPEARED TO BE NO FACTOR; YES CLOSER THAN I LIKE; BUT NO FACTOR. IT STILL BOTHERED ME THAT I CAUSED A PLT TO GO AROUND. EVEN IF IT APPEARED TO BE NO FACTOR TO ME; THIS PLT EXERCISED HIS JUDGEMENT AND WENT AROUND. I COMMEND THIS PLT FOR DECIDING TO GO AROUND. I TALKED TO ANOTHER PLT WHO HAPPENED TO BE THERE AT THE TIME; AND HE SAID IT REALLY DIDN'T LOOK THAT CLOSE TO HIM EITHER. HE THOUGHT THAT THE OTHER PLT WAS A STUDENT; AND MIGHT HAVE GONE AROUND BECAUSE HE WAS TOO HIGH ON FINAL. WHATEVER THE CASE; THIS OTHER PLT ACTED MORE CONSERVATIVELY AND HENCE; MORE SAFELY THAN I DID. WHAT WE CAN LEARN FROM THIS: 1) YOU CAN'T ASSUME IT. YOU MUST SEE IT. IF YOU FIND YOURSELF ASSUMING IN A SIT WHERE YOU REALLY SHOULD BE SEEING; STOP; OR JUST SLOW DOWN LONG ENOUGH TO 'RESOLVE' YOUR ASSUMPTION. 2) SOMETHING THAT IS 'NO FACTOR' TO 1 PLT; MAY APPEAR TO BE 'A FACTOR' TO ANOTHER PLT. REGARDLESS OF RELATIVE EXPERIENCE; IF THAT IS THE CASE HERE; I HAVE TO EXAMINE MY ACTIONS FOR POSSIBLE COMPLACENCY OR OVER CONFIDENCE.