A BE1900 has an near midair collision with a cessna caravan.

Attributes
ACN	598477
Time
Date	200310
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : zbv.vortac
Altitude	msl single value : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zma.artcc
Operator	common carrier : air taxi
Make Model Name	Beech 1900
Operating Under FAR Part	Part 135
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zma.artcc
Operator	common carrier : air taxi
Make Model Name	Caravan 1 208A
Operating Under FAR Part	Part 135
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 3050 flight time type : 2800
ASRS Report	598477
Person 2
Affiliation	company : air taxi
Function	flight crew : first officer
Events
Anomaly	conflict : airborne critical non adherence : far
Independent Detector	aircraft equipment : tcas other controllera
Resolutory Action	controller : issued advisory flight crew : took evasive action
Miss Distance	horizontal : 800 vertical : 500
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	Ambiguous

Narrative:

We were instructed to cross dekal intersection at 4000 ft. ZMA pointed out a VFR target that was descending into bimini. It was an alert -- the traffic was a cessna caravan on a direct collision course with our aircraft. We turned 90 degrees off the airway and descended to 3400 ft to avoid a collision. Then we climbed back up to 4000 ft safely.

Original NASA ASRS Text

Title: A BE1900 HAS AN NMAC WITH A CESSNA CARAVAN.

Narrative: WE WERE INSTRUCTED TO CROSS DEKAL INTXN AT 4000 FT. ZMA POINTED OUT A VFR TARGET THAT WAS DSNDING INTO BIMINI. IT WAS AN ALERT -- THE TFC WAS A CESSNA CARAVAN ON A DIRECT COLLISION COURSE WITH OUR ACFT. WE TURNED 90 DEGS OFF THE AIRWAY AND DSNDED TO 3400 FT TO AVOID A COLLISION. THEN WE CLBED BACK UP TO 4000 FT SAFELY.

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.