Narrative:

On short final at 600 ft AGL on runway 9R we got a short notice TCASII TA followed shortly by an RA at less than 1 mi, 12 O'clock position. Pull-up command initiated to 2000 FPM. A crossover occurred with 300 ft separation. At crossover, tower called us with the first traffic call. We never saw traffic. A non revenue passenger reported he saw a blue helicopter pass under us. We reported our maneuver to tower. This initiated a conversation between the tower and the helicopter who reported he had us in sight at all times.

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Original NASA ASRS Text

Title: AN MD80 FLC RECEIVED A TCASII RA AT 600 FT MSL AND FLEW THE EVASIVE MANEUVER ON APCH TO MIA.

Narrative: ON SHORT FINAL AT 600 FT AGL ON RWY 9R WE GOT A SHORT NOTICE TCASII TA FOLLOWED SHORTLY BY AN RA AT LESS THAN 1 MI, 12 O'CLOCK POS. PULL-UP COMMAND INITIATED TO 2000 FPM. A CROSSOVER OCCURRED WITH 300 FT SEPARATION. AT CROSSOVER, TWR CALLED US WITH THE FIRST TFC CALL. WE NEVER SAW TFC. A NON REVENUE PAX RPTED HE SAW A BLUE HELI PASS UNDER US. WE RPTED OUR MANEUVER TO TWR. THIS INITIATED A CONVERSATION BTWN THE TWR AND THE HELI WHO RPTED HE HAD US IN SIGHT AT ALL TIMES.

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.