Narrative:

Cpr flight from mbs to 55J (fernandina beach airport, fl). Our flight was being controled by jax approach. We had just crossed ssi airport at 9000 ft, being vectored to our destination airport, fernandina beach, we were told to descend from 9000 ft to 4000 ft and that we had traffic 12 O'clock position, 3 mi, below us. We looked for the traffic, no contact. Passing through 8000 ft, we were reclred to level off at 7000 ft. The clearance was acknowledged and we leveled off at 7000 ft. To our surprise, an airplane passed right above us. The only thing I saw from the corner of my eye was the bottom side of the airplane and elevators. My question to (my copilot) was, what was that? His answer was we just missed a beech duke. Jax approach was advised of the near miss. Jax approach acknowledged our call, as if nothing happened, and then cleared us to descend to 4000 ft, saying we were clear of traffic. I replied that this TA and warning was totally unacceptable. The response was they were not talking to that traffic, and asked if we were all right. I wonder why the controller did not vector us away from the traffic. The traffic was said to be below our altitude, that was the reason for stopping our descent to 4000 ft. I feel the controller was not monitoring, the traffic, as the duke was really climbing. What I learned from the experience is when I am unable to see the traffic I will ask for vectors for traffic avoidance.

Related reports:

Google
 

Original NASA ASRS Text

Title: LR24 FLC IS ISSUED DSCNT CLRNC AND TFC INFO. LR24 ENCOUNTERS AN NMAC WITH AN UNCTLED BE60. LR24 PIC STATES THAT ATC SHOULD HAVE PROVIDED SOME TYPE OF POSITIVE SEPARATION.

Narrative: CPR FLT FROM MBS TO 55J (FERNANDINA BEACH ARPT, FL). OUR FLT WAS BEING CTLED BY JAX APCH. WE HAD JUST CROSSED SSI ARPT AT 9000 FT, BEING VECTORED TO OUR DEST ARPT, FERNANDINA BEACH, WE WERE TOLD TO DSND FROM 9000 FT TO 4000 FT AND THAT WE HAD TFC 12 O'CLOCK POS, 3 MI, BELOW US. WE LOOKED FOR THE TFC, NO CONTACT. PASSING THROUGH 8000 FT, WE WERE RECLRED TO LEVEL OFF AT 7000 FT. THE CLRNC WAS ACKNOWLEDGED AND WE LEVELED OFF AT 7000 FT. TO OUR SURPRISE, AN AIRPLANE PASSED RIGHT ABOVE US. THE ONLY THING I SAW FROM THE CORNER OF MY EYE WAS THE BOTTOM SIDE OF THE AIRPLANE AND ELEVATORS. MY QUESTION TO (MY COPLT) WAS, WHAT WAS THAT? HIS ANSWER WAS WE JUST MISSED A BEECH DUKE. JAX APCH WAS ADVISED OF THE NEAR MISS. JAX APCH ACKNOWLEDGED OUR CALL, AS IF NOTHING HAPPENED, AND THEN CLRED US TO DSND TO 4000 FT, SAYING WE WERE CLR OF TFC. I REPLIED THAT THIS TA AND WARNING WAS TOTALLY UNACCEPTABLE. THE RESPONSE WAS THEY WERE NOT TALKING TO THAT TFC, AND ASKED IF WE WERE ALL RIGHT. I WONDER WHY THE CTLR DID NOT VECTOR US AWAY FROM THE TFC. THE TFC WAS SAID TO BE BELOW OUR ALT, THAT WAS THE REASON FOR STOPPING OUR DSCNT TO 4000 FT. I FEEL THE CTLR WAS NOT MONITORING, THE TFC, AS THE DUKE WAS REALLY CLBING. WHAT I LEARNED FROM THE EXPERIENCE IS WHEN I AM UNABLE TO SEE THE TFC I WILL ASK FOR VECTORS FOR TFC AVOIDANCE.

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.