POSSIBLE NMAC OR POTENTIAL CONFLICT LTSS DURING IAP ILS APCH CAT II.

Narrative

DURING ILS APCH TO 36L AT CLT. WE WERE CLRED TO LAND ABOUT 5 MI OUT ON FINAL (WE HAD A REQUEST TO REDUCE SPD TO 160 KTS). WE REDUCED SPD TO 160 THEN TO ABOUT 140 AT JUST INSIDE OM/FIX. HAD SOME 15 KT TAILWIND DURING APCH. I BELIEVE THERE WAS TFC IN FRONT OF US THAT HAD JUST LANDED AND AS WE BROKE OUT OF THE CLOUDS WE SAW RAIL LIGHTS AT ABOUT 300 FT AGL. RWY CAME INTO VIEW ABOUT 200 FT AGL (MINS) MIDDLE MARKER AREA. SAW MLG Y ACFT STILL ON RWY. HE APPEARED TO BE JUST STARTING TO ROLL. HE WAS PERHAPS AT THE 500 FT POINT FROM THRESHOLD; ON TKOF ROLL. WE ELECTED TO GAR AND ANNOUNCED OUR INTENTIONS WHILE EXECUTING A PULLUP. THE CTLR ISSUED A STRAIGHT AHEAD CLB TO 4000 FT. WE ASKED FOR A L TURN TO AVOID THE CLBING TFC. CLRED TO CLB TO 4600 FT FOR RADAR VECTORS. I SUSPECT THAT THE ACFT ON THE RWY WAS CLRED FOR TKOF (IMMEDIATE) FROM PERPENDICULAR TAXIWAY. BY THE TIME HE GOT INTO POS AND BEGAN ROLL WE WERE NEARING MINS ON THE APCH. CTLR TOLD ME THAT HE ISSUED TKOF CLRNC WHEN WE WERE 2 MI OUT. WE DID HAVE A TAILWIND ON APCH. IT WAS A HVY TFC TIME AT CLT. FACTORS: WX WAS LESS THAN BROADCAST AND TWR COULD NOT SEE END OF RWY 36L. 2 MI SEPARATION IS GOOD ONLY UNDER IDEAL CONDITIONS (ACFT ON RWY WITH PWR UP; READY TO ROLL). TAILWIND ON APCH 15 KTS OR MORE AT 2000 FT AGL. OTHER ACFT DISCOVERED BY SEEING ACFT SILHOUETTE AND LIGHTING. REQUESTED L TURN TO AVOID ACFT CLBING RAPIDLY UP TO OUR ALT; (IN CASE HE HAD BEEN LIGHT WT; ETC). WE HAD TCASII BUT DUE TO SEVERAL FALSE WARNINGS; ON APCH BECAUSE OF 36R APCHS WE HAD SWITCHED TO TA ONLY. OTHERWISE WE MAY HAVE GOTTEN AN RA. ALL INVOLVED WERE CALM AND NOTHING BUT A NORMAL GAR MANEUVER WAS NECESSARY.