Narrative:

While proceeding on an IFR flight plan, an altitude incursion occurred just south of joses intersection while cruising at FL350. At a point 60 mi southeast of joses intersection, the first officer called ZMA. ZMA responded with the information that he had positive radar contact with our aircraft. The first officer then returned to port-au-prince control and informed them that we had contact with ZMA, at which time we were instructed to contact ZMA. This handoff occurred about 30 mi southeast of joses intersection. Shortly thereafter, I observed an opposite direction TCASII target at 1100 ft, with vertical separation decreasing. At -900 ft the TCASII issued a traffic alert. At that time, I observed the conflicting traffic visually at our 11 O'clock position and maintained constant visual contact as the opposite direction traffic passed to our left at a visually judged distance of 400 ft horizontally and a TCASII vertical separation of 600 ft. I immediately informed ZMA of the incursion and their immediate response was that port-au-prince had climbed that aircraft too soon. Upon landing at miami, I spoke on the telephone with the ZMA shift supervisor. The conclusion was that port-au-prince control (non radar) had assumed that when we informed him that we were in contact with ZMA that we were at joses intersection although we had not made a position report at joses. Since the opposite direction traffic had reported joses, port-au-prince then issued a climb clearance to that aircraft (aircraft Y, an A320).

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Original NASA ASRS Text

Title: ACR HAS TFC CONFLICT DURING XFER BTWN PAP AND MIA CTL.

Narrative: WHILE PROCEEDING ON AN IFR FLT PLAN, AN ALT INCURSION OCCURRED JUST S OF JOSES INTXN WHILE CRUISING AT FL350. AT A POINT 60 MI SE OF JOSES INTXN, THE FO CALLED ZMA. ZMA RESPONDED WITH THE INFO THAT HE HAD POSITIVE RADAR CONTACT WITH OUR ACFT. THE FO THEN RETURNED TO PORT-AU-PRINCE CTL AND INFORMED THEM THAT WE HAD CONTACT WITH ZMA, AT WHICH TIME WE WERE INSTRUCTED TO CONTACT ZMA. THIS HDOF OCCURRED ABOUT 30 MI SE OF JOSES INTXN. SHORTLY THEREAFTER, I OBSERVED AN OPPOSITE DIRECTION TCASII TARGET AT 1100 FT, WITH VERTICAL SEPARATION DECREASING. AT -900 FT THE TCASII ISSUED A TFC ALERT. AT THAT TIME, I OBSERVED THE CONFLICTING TFC VISUALLY AT OUR 11 O'CLOCK POS AND MAINTAINED CONSTANT VISUAL CONTACT AS THE OPPOSITE DIRECTION TFC PASSED TO OUR L AT A VISUALLY JUDGED DISTANCE OF 400 FT HORIZLY AND A TCASII VERT SEPARATION OF 600 FT. I IMMEDIATELY INFORMED ZMA OF THE INCURSION AND THEIR IMMEDIATE RESPONSE WAS THAT PORT-AU-PRINCE HAD CLBED THAT ACFT TOO SOON. UPON LNDG AT MIAMI, I SPOKE ON THE TELEPHONE WITH THE ZMA SHIFT SUPVR. THE CONCLUSION WAS THAT PORT-AU-PRINCE CTL (NON RADAR) HAD ASSUMED THAT WHEN WE INFORMED HIM THAT WE WERE IN CONTACT WITH ZMA THAT WE WERE AT JOSES INTXN ALTHOUGH WE HAD NOT MADE A POS RPT AT JOSES. SINCE THE OPPOSITE DIRECTION TFC HAD RPTED JOSES, PORT-AU-PRINCE THEN ISSUED A CLB CLRNC TO THAT ACFT (ACFT Y, AN A320).

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.