FLT CREW OF LR35 ABANDONS 2 APCHS TO UNCTLED FIELD DUE TO TFC CONFLICTS.

Narrative

A FELLOW CREW MEMBER AND I DEPARTED THE WEST BEND; WI; ARPT EMPTY (PART 91) TO PICK UP A CLIENT IN IRON MOUNTAIN; MI. WE PROCEEDED N ON AN IFR FLT PLAN. AS OUR DEST WAS IN VISUAL CONTACT; WE CANCELED OUR IFR AND PROCEEDED INBOUND WITH FLT FOLLOWING FOR THE VISUAL. THERE WAS ALSO A SECOND ACFT (A NAVAJO) INBOUND TO THE ARPT ON AN IFR FLT PLAN. WE GOT A VISUAL ON THE NAVAJO AND REALIZED WE WERE GOING TO MEET AT THE ARPT AT THE SAME TIME. SO WE CONTACTED THE NAVAJO AFTER HE CANCELED IFR AND CAME UPON UNICOM FREQ. THE DECISION WAS MADE TO LET THE NAVAJO PROCEED INBOUND FOR THE STRAIGHT-IN ON RWY 1; AND WE WOULD CONTINUE ON A L DOWNWIND FOR RWY 19 BECAUSE THE WINDS WERE CALM AND NO OTHER TFC HAD BEEN RPTING; SO WE PROCEEDED TO MAKE ALL NORMAL RADIO CALLS FROM DOWNWIND TO BASE. AS WE TURNED BASE; THE NAVAJO CLRED THE RWY; SO WE MADE OUR CALL; TURNING FINAL RWY 19 IRON MOUNTAIN. AS WE TURNED ABOUT A 2 MI FINAL; A SINGLE ENG MOONEY DEPARTED IFR STRAIGHT-OUT ON RWY 1 AS WE WERE TURNING FINAL. CAPT; PNF; SAID 'GO AHEAD AND WE WILL EXTEND OUT AND COME BACK ON A L DOWNWIND FOR RWY 1.' I TURNED ONTO A DOWNWIND AND THE CAPT; PNF; CALLED OUR DOWNWIND; BASE; AND FINAL OVER UNICOM. THIS TIME AS WE WERE ON SHORT FINAL; A COMMUTER BEECH 1900 PULLED ONTO THE RWY; MAKING NO RADIO CALLS; CONTINUES TO PWR UP AND DEPART. WE IMMEDIATELY PROCEEDED WITH OUR MISSED APCH PROCS; PWRED UP; AND BROUGHT THE FLAPS AND GEAR UP AS WE SIDESTEPPED TO THE R OF THE DEPARTING BEECH 1900. AS WE ACCELERATED; I BROKE OUR PATTERN OFF TO THE R AND AWAY FROM THE DEPARTING ACFT. DURING THE MISSED APCH; WE CONTINUED TO XMIT ON UNICOM; NO RESPONSE FROM THE 1900; BUT LATER HEARD THEM BROADCASTING ON CTR FREQ. FOLLOWING THE EVENT WE LANDED ON RWY 1 WITH NO INCIDENT. RADIO PROBS WERE NOT A FACTOR IN THIS SITUATION BECAUSE THE NAVAJO AND THE MOONEY BOTH HEARD OUR XMISSIONS.