CRJ200 CREW WITH IOE FIRST OFFICER ON VISUAL TO IAD 1R IS SWITCHED TO 1L BY THE TOWER. THE INSTRUCTOR CAPTAIN REQUESTS TO REMAIN WITH 1R OR GO AROUND. THE TOWER CONTROLLER THEN ISSUES GO AROUND INSTRUCTIONS.

Narrative

DOING IOE TRAINING ON DAY 1 OF 2. REPOS FERRY FLT TO IAD. ARRIVING ON THE PRTZL 1 ARR OVER PSB WHICH BRINGS YOU IN ON THE E SIDE OF IAD. ATIS RPTING LNDG ON RWY 1L AND RWY 1R WITH CALM WINDS AND VFR. CHKED IN WITH POTOMAC APCH AND WAS TOLD TO EXPECT VISUAL TO RWY 1R. WE SET UP ILS RWY 1R AND BRIEFED THE APCH TO RWY 1R. SWITCHED TO NEXT POTOMAC APCH AND HE CLRED US TO TICON FOR VISUAL TO RWY 1R. WE DID ALL OUR CHKLISTS AND WERE ON A R DOWNWIND APPROX ABEAM THE FIELD WHEN SWITCHED TO FINAL CTLR. HE DSNDED US AND TURNED US ON A BASE LEG. FINAL APCH CTL CALLED TFC AND ASKED IF WE HAD TFC AND/OR FIELD IN SIGHT. WE CALLED THE FIELD AND SAID WE WERE LOOKING FOR THE TFC. HE CLRED US FOR THE VISUAL AND TOLD US TO CONTACT TWR. WE SWITCHED TO TWR AND REPORTED THAT WE WERE ON THE VISUAL TO RWY 1R. TWR CLRED US TO LAND RWY 1L. WE WERE AT 2000 FT DSNDING AND APPROX 5 MI OUT. I INFORMED TWR THAT WE WERE SET UP FOR RWY 1R AND IF WE COULDN'T GET LNDG CLRNC FOR RWY 1R WE WOULD NEED TO GO AROUND. THIS DECISION WAS MADE BY THE CAPT BECAUSE I AM STILL GOING THROUGH MY IOE TRAINING AND WOULDN'T FEEL COMFORTABLE MAKING A SIDE-STEP TO RWY 1L ON A SHORT FINAL. TWR SAID STAND BY; THEN CAME BACK AND TOLD US TO FLY RWY HDG AND MAINTAIN 2000 FT; WHICH WE DID. TWR SWITCHED US BACK TO APCH. THE FIRST CTLR WE SPOKE TO TOLD US IT WOULD BE VECTORS TO RWY 1R. I ASKED THAT HE CONFIRM THAT; AND HE DID. I REPEATED VECTORS TO RWY 1R; AND HE AGREED AGAIN. VECTORED BACK TO ANOTHER R DOWNWIND; EXPECTING RWY 1R. SWITCHED TO FINAL APCH CTLR AND HE TOLD US IT WAS VECTORS TO RWY 1L. I TOLD HIM WE WERE EXPECTING RWY 1R AND HE REPEATED RWY 1L. WE CONFIGURED FOR RWY 1L; RE-BRIEFED; AND MADE A RUSHED BUT NORMAL VISUAL APCH AND LNDG TO RWY 1L. THE FINAL CTLR WAS UPSET WITH US AND SAID HE HAD TOLD US ON OUR FIRST APCH THAT HE WAS CHANGING OUR RWY TO RWY 1L. WE NEVER HEARD THAT XMISSION AND DEFINITELY DID NOT ACKNOWLEDGE A RWY CHANGE.