A C182 SINGLE PLT COMPLAINED THAT S46 DROPPED HIM PREMATURELY AS HE MADE HIS APCH TO OLM DURING WHICH HE ENCOUNTERED ANOTHER ACFT.

Narrative

IFR; OCCASIONAL IMC; BFI TO OLM. AT BOSTO (REFER ILS RWY 17 AT OLM); SEA APCH CANCELLED RADAR CONTACT AND INSTRUCTED 'OVER TO TWR.' WE WERE APPROX 11 MI OUT AND IN IMC. I CONFIRMED SAYING TO APCH; 'WE ARE IMC; ESTIMATE ON LOC AT 2500 FT MSL.' APCH CONFIRMED AND I LOOKED TO PNF; CONFUSED AT EARLY RADAR CANCELLATION. WE CONTINUED THE ILS AND OVER TO TWR WITH ASOS INFO AND APCH NAME. AT 3-5 MI OUT; TWR ASKED IF A C150 HAD THEIR LNDG LIGHT ON. AFTER SECOND TWR ATTEMPT; I RADIOED WE HAD LNDG LIGHT ON AND CYCLED 2 TIMES. AGAIN; TWR ASKED IF OTHER ACFT HAD LNDG LIGHT. FINALLY; AS THE OTHER ACFT RESPONDED; THE RESPONSE WAS; 'A CESSNA JUST FLEW RIGHT OVER US' (SOUND OF FEAR/EXCITEMENT FROM PLT). WE CONTINUED ON A STABILIZED ILS 17 APCH. CTLR (OLM) INSTRUCTED C150 TO MAKE A R 360 DEG TURN. PROB: BAD SITUATIONAL AWARENESS BY CTLR AND BOTH PLTS; MYSELF AND C150 PLT. BAD COM BY CTLR. EARLY RADAR TERMINATION BY SEA APCH. CORRECTIVE ACTION: ATC IFR TERMINATE ON OR AFTER DADME INTXN; WHICH IS 7 MI FROM OM. TWR NEEDS RADAR; AS IT IS A BUSY TRAINING TWR FOR BOTH PVT AND MIL VFR TRAINING. IFR HAS PRIORITY BY ATC.