Narrative:

En route from elh to fll, we were given a descent from 14000 to 4000 ft. Before reaching 4000 ft, ZMA advised us we were to expect holding at 5000 ft, at dekal intersection, 20 mi on the zbv 300 degree radial. We leveled at 5000 ft at dekal intersection. Overhead the zbv VOR, the TCASII showed an aircraft at the same altitude approaching us. When the aircraft was within 1 mi, I advised the first officer, who was at the controls, to turn away to the left and descend while I called ZMA asking 'who was flying in the area?' while in the process of making the radio call, I spotted the traffic to the right of us, and advised the controller that I had the traffic in sight. It appeared to be a cessna southeast. The TCASII had shown the aircraft climbing through 5000 ft. There were multiple aircraft holding above and below, due to poor WX and no arrs into miami or fll. The TA is what alerted my decision to maneuver the aircraft to avoid a 'loss of separation' and what would have been a midair. We were within 200 ft and no more than 30 degrees of course deviation, to avoid the conflict. I called ATC afterwards, due to their request.

Google
 

Original NASA ASRS Text

Title: B190 FLC HAVE NMAC WITH SINGLE ENG CESSNA AT DEKAL INTXN, WHICH IS IN THE CONTIGUOUS UNITED STATES ADIZ.

Narrative: ENRTE FROM ELH TO FLL, WE WERE GIVEN A DSCNT FROM 14000 TO 4000 FT. BEFORE REACHING 4000 FT, ZMA ADVISED US WE WERE TO EXPECT HOLDING AT 5000 FT, AT DEKAL INTXN, 20 MI ON THE ZBV 300 DEG RADIAL. WE LEVELED AT 5000 FT AT DEKAL INTXN. OVERHEAD THE ZBV VOR, THE TCASII SHOWED AN ACFT AT THE SAME ALT APCHING US. WHEN THE ACFT WAS WITHIN 1 MI, I ADVISED THE FO, WHO WAS AT THE CTLS, TO TURN AWAY TO THE L AND DSND WHILE I CALLED ZMA ASKING 'WHO WAS FLYING IN THE AREA?' WHILE IN THE PROCESS OF MAKING THE RADIO CALL, I SPOTTED THE TFC TO THE R OF US, AND ADVISED THE CTLR THAT I HAD THE TFC IN SIGHT. IT APPEARED TO BE A CESSNA SE. THE TCASII HAD SHOWN THE ACFT CLBING THROUGH 5000 FT. THERE WERE MULTIPLE ACFT HOLDING ABOVE AND BELOW, DUE TO POOR WX AND NO ARRS INTO MIAMI OR FLL. THE TA IS WHAT ALERTED MY DECISION TO MANEUVER THE ACFT TO AVOID A 'LOSS OF SEPARATION' AND WHAT WOULD HAVE BEEN A MIDAIR. WE WERE WITHIN 200 FT AND NO MORE THAN 30 DEGS OF COURSE DEV, TO AVOID THE CONFLICT. I CALLED ATC AFTERWARDS, DUE TO THEIR REQUEST.

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.