ACR LGT IS RPTED OFF LOC INTERFERING WITH OTHER ACFT ON APCH TO PARALLEL RWY.

Narrative

CLRED TO INTERCEPT LOC RWY 35R AT DFW; COUPLED APCH ALL 3 AUTOPLTS OPERATING; LOC CAPTURE ENUNCIATED ON BOTH CAPT AND FO CRT; LOC CENTERED ON STANDBY HORIZ ILS RAW DATA; CLRED TO LAND #3. ATC RPTED US L OF CENTER AND INTERFERING WITH APCHS TO RWY 36; CREW XCHKED CAPT IN MISSED APCH; FO IN ILS; STANDBY HORIZ RAW DATA. RPTED WE SHOWED ON CENTERLINE. GIVEN VECTOR TO POS R OF LOC TO REINTERCEPT THEN CHANGED MIND; VECTORED US OUT TO DOWNWIND TO REINTERCEPT. ON REINTERCEPT; NO RADIO HAD BEEN RETURNED AND ALL WAS AS ON FIRST APCH; ON LOC AND APCH FACILITY CONFIRMED POS. APCH THEREAFTER NORMAL. FLEW ACFT ON ANOTHER LEG WITH APCH IN VISUAL CONDITIONS; ON ILS; COUPLED; TO 200 FT AGL; NAVS AND AUTOPLTS CHK ABSOLUTELY PERFECT; LAND 3; FLARE AND ROLLOUT ANNUNCIATOR ACTIVE. APCH TO DEN OBSERVED BY 3 OTHER CREW MEMBERS WHO CONFIRMED CONDITIONS SHOWN IN ACFT ON INITIAL APCH TO DEN. I SUSPECT FROM VECTORING ACTIVITY ON APCH THAT WE WERE CLOSING ON ACFT IN FRONT OF US AND CTLR DUMPED ON US TO COVER HIS BUTT. DISCONTINUE PARALLEL APCHS WITH MULTIPLE ACFT ON LOC TO RWY; AIRSPACE SATURATED WITH POORLY DESIGNED ARPT AND MARGINAL ATC ENVIRONMENT.