Narrative:

On blufi 4 arrival to fll, just received clearance to 7000. First officer set altitude in altitude alert. I disconnected autoplt, reduced power, scanned instruments, started descent, then went outside, saw small aircraft at 12 O'clock. Immediate evasive action to right and down. Missed small aircraft by less than 50'. Asked ATC if they showed traffic. Their response, no. Xponders in all aircraft.

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Original NASA ASRS Text

Title: CLOSE PROX ACR-MDT GA-SMA.

Narrative: ON BLUFI 4 ARR TO FLL, JUST RECEIVED CLRNC TO 7000. F/O SET ALT IN ALT ALERT. I DISCONNECTED AUTOPLT, REDUCED POWER, SCANNED INSTRUMENTS, STARTED DSCNT, THEN WENT OUTSIDE, SAW SMA AT 12 O'CLOCK. IMMEDIATE EVASIVE ACTION TO RIGHT AND DOWN. MISSED SMA BY LESS THAN 50'. ASKED ATC IF THEY SHOWED TFC. THEIR RESPONSE, NO. XPONDERS IN ALL ACFT.

Data retrieved from NASA's ASRS site as of August 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.