Narrative:

7 mi north of buf, we reported the runway in sight and were cleared for a visual approach to runway 23. We were advised by approach control to slow to 180 KTS and contact tower. The first officer was flying. I contacted tower and was cleared to land. We configured the aircraft and the ILS approach was optimal while I and the flight engineer cleared the area for other aircraft. At approximately 800 ft we received a TCASII warning and I visually acquired a helicopter at our 11 O'clock position approximately 2 mi away. The tower controller reported the helicopter and I elected to continue the approach. We landed normally on runway 23. I deployed the speed brake but before the first officer could select reverse thrust, we observed an small aircraft landing in front of us on runway 32. I slammed on the brakes which had little effect and the small aircraft passed less than 500 ft in front of our landing roll. I asked tower what had happened and she said, 'that was a little closer than I thought it would be.' our TCASII never warned us of the impending (real) conflict. I later learned from the tower supervisor that the small aircraft was VFR and was cleared to land. He also said that the tower controller had erred and was being removed from duty pending additional training. If the small aircraft had a transponder, our TCASII may have alerted us and the near miss been avoided, despite the tower controller's misjudgment!

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Original NASA ASRS Text

Title: ACR HAS SMA CROSS IN FRONT ON CROSS RWY AS THEY ARE ROLLING OUT AFTER LNDG.

Narrative: 7 MI N OF BUF, WE RPTED THE RWY IN SIGHT AND WERE CLRED FOR A VISUAL APCH TO RWY 23. WE WERE ADVISED BY APCH CTL TO SLOW TO 180 KTS AND CONTACT TWR. THE FO WAS FLYING. I CONTACTED TWR AND WAS CLRED TO LAND. WE CONFIGURED THE ACFT AND THE ILS APCH WAS OPTIMAL WHILE I AND THE FLT ENGINEER CLRED THE AREA FOR OTHER ACFT. AT APPROX 800 FT WE RECEIVED A TCASII WARNING AND I VISUALLY ACQUIRED A HELI AT OUR 11 O'CLOCK POS APPROX 2 MI AWAY. THE TWR CTLR RPTED THE HELI AND I ELECTED TO CONTINUE THE APCH. WE LANDED NORMALLY ON RWY 23. I DEPLOYED THE SPD BRAKE BUT BEFORE THE FO COULD SELECT REVERSE THRUST, WE OBSERVED AN SMA LNDG IN FRONT OF US ON RWY 32. I SLAMMED ON THE BRAKES WHICH HAD LITTLE EFFECT AND THE SMA PASSED LESS THAN 500 FT IN FRONT OF OUR LNDG ROLL. I ASKED TWR WHAT HAD HAPPENED AND SHE SAID, 'THAT WAS A LITTLE CLOSER THAN I THOUGHT IT WOULD BE.' OUR TCASII NEVER WARNED US OF THE IMPENDING (REAL) CONFLICT. I LATER LEARNED FROM THE TWR SUPVR THAT THE SMA WAS VFR AND WAS CLRED TO LAND. HE ALSO SAID THAT THE TWR CTLR HAD ERRED AND WAS BEING REMOVED FROM DUTY PENDING ADDITIONAL TRAINING. IF THE SMA HAD A TRANSPONDER, OUR TCASII MAY HAVE ALERTED US AND THE NEAR MISS BEEN AVOIDED, DESPITE THE TWR CTLR'S MISJUDGMENT!

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.