PVT PLT OF A SMA SEL TAKES EVASIVE ACTION TO AVOID ANOTHER SEL SUDDENLY APPEARING OFF HIS 'WING.'

Narrative

INCIDENT OCCURRED WITHIN 10 NM OF BOTH EAGLE CREEK AND SPDWAY ARPTS. MY ARPT OF INTENDED LNDG IS EAGLE CREEK. OTHER ACFT'S INTENDED LNDG LOCATION WAS UNKNOWN. MY HDG IS APPROX 120 DEGS. THE OTHER ACFT'S APPROX HDG IS 160 DEGS. THE OTHER ACFT APPEARED TO BE EITHER A CESSNA-152 OR CESSNA-172. VISIBILITY BEING BLOCKED BY LOW OR HIGH WINGS WAS NOT A FACTOR SINCE I COULD EASILY OBSERVE THE ENTIRE R SIDE OF THE OTHER ACFT'S STRUCTURE AND COCKPIT. WHILE INBOUND TO EAGLE CREEK AT 2000 MSL; I AM USING RECOMMENDED FAA VISUAL SCAN METHODS FOR OTHER ACFT; AND CALLING OUT MY POS ON THE CTAF (122.8); IT IS APPARENT THERE ARE 4 OTHER ACFT INBOUND TO EAGLE CREEK SINCE THEY ARE CALLING OUT THEIR POS ON THE CTAF. AS I SCAN TO MY L; I OBSERVE THE OTHER ACFT AT AN APPROX 45 DEG ANGLE OFF MY SHOULDER. WITHIN 1 SECOND AFTER THE OBSERVATION; I EXECUTE AN EXCEEDING HIGH BANK TO MY R AND INCREASE THE RPM'S TO AVOID AN APPARENT INFLT COLLISION. AFTER CONTINUING THROUGH A 180 DEG TURN; I OBSERVE THE SAME ACFT APPEAR TO BE CONTINUING IT'S FLT PATH WITHOUT ANY DEV OR EVASIVE MANEUVERING. I CONTINUE MY FLT TO EAGLE CREEK ARPT AND LAND WITHOUT FURTHER INCIDENT. I HAD 2 OTHER OCCUPANTS WITH ME DURING THIS INCIDENT. 1 OF THE 2 PERSONS OBSERVED THE ACFT ALMOST AT THE SAME INSTANT I DID. AFTER LNDG WE SPOKE COMPARING OBSERVATIONS AND AGREED ON THE SAME FACTS. I WAS NOT DISTRACTED BY ANY COCKPIT PROBS OR BY THE 2 PAX. IF I HAD BEEN AT THAT POINT IN TIME; A TRADING OF PAINT COULD HAVE OCCURRED.