Narrative:

Everything was normal until turning (visually) onto final for runway 9L at fll. We had the ILS's tuned in and traffic in front of us in sight. From here, things are confused. We saw a target on TCASII off to our right and we believe (captain and first officer) about this time ATC mentioned a 'beech duchess' off our right and a possible aircraft circling or that the beech duchess was circling. We had only 1 target on TCASII throughout this entire maneuver/situation (1 target, that is, in the area in question). We received a TA and since the captain clearly saw traffic low and to the right slightly earlier, this TA was not entirely unexpected. The TCASII screen then showed the traffic behind us a bit and therefore no RA was expected. About 20 seconds later (estimated) we got an RA with the TCASII screen showing what we believe to be the same target 100 ft below us and to our right -- horizontal separation was unknown but fairly close. Due to the ambiguity of the situation, the captain (who was flying) was beginning to execute (followed RA) a go around when it became evident that an aircraft departing runway 9L would become a potential conflict. Therefore, because we wre still in the landing confign, it was decided to land. We were now clearly in a safe confign and situation to land although we were vref +20 KTS. A normal landing ensued.

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Original NASA ASRS Text

Title: ACR FOLLOWS TCASII RA ON SHORT FINAL WITHIN CLASS C AIRSPACE.

Narrative: EVERYTHING WAS NORMAL UNTIL TURNING (VISUALLY) ONTO FINAL FOR RWY 9L AT FLL. WE HAD THE ILS'S TUNED IN AND TFC IN FRONT OF US IN SIGHT. FROM HERE, THINGS ARE CONFUSED. WE SAW A TARGET ON TCASII OFF TO OUR R AND WE BELIEVE (CAPT AND FO) ABOUT THIS TIME ATC MENTIONED A 'BEECH DUCHESS' OFF OUR R AND A POSSIBLE ACFT CIRCLING OR THAT THE BEECH DUCHESS WAS CIRCLING. WE HAD ONLY 1 TARGET ON TCASII THROUGHOUT THIS ENTIRE MANEUVER/SIT (1 TARGET, THAT IS, IN THE AREA IN QUESTION). WE RECEIVED A TA AND SINCE THE CAPT CLRLY SAW TFC LOW AND TO THE R SLIGHTLY EARLIER, THIS TA WAS NOT ENTIRELY UNEXPECTED. THE TCASII SCREEN THEN SHOWED THE TFC BEHIND US A BIT AND THEREFORE NO RA WAS EXPECTED. ABOUT 20 SECONDS LATER (ESTIMATED) WE GOT AN RA WITH THE TCASII SCREEN SHOWING WHAT WE BELIEVE TO BE THE SAME TARGET 100 FT BELOW US AND TO OUR R -- HORIZ SEPARATION WAS UNKNOWN BUT FAIRLY CLOSE. DUE TO THE AMBIGUITY OF THE SIT, THE CAPT (WHO WAS FLYING) WAS BEGINNING TO EXECUTE (FOLLOWED RA) A GAR WHEN IT BECAME EVIDENT THAT AN ACFT DEPARTING RWY 9L WOULD BECOME A POTENTIAL CONFLICT. THEREFORE, BECAUSE WE WRE STILL IN THE LNDG CONFIGN, IT WAS DECIDED TO LAND. WE WERE NOW CLRLY IN A SAFE CONFIGN AND SIT TO LAND ALTHOUGH WE WERE VREF +20 KTS. A NORMAL LNDG ENSUED.

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.