Narrative:

In non radar environment on airways east of florida, R763 and R514 at dribl intersection, my B767 and unknown B747 met at FL390. (B767 northbound, B747 wbound.) I received a warning on TCASII which commanded a fly up and I did so. I saw aircraft from right to left and TCASII distance was 1.75 mi. I climbed to FL395, then back to FL390 and called ATC and reported.

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Original NASA ASRS Text

Title: AN ACR B767 CLBED IN RESPONSE TO TCASII TO AVOID AN ACR B747. THE RPTR BELIEVES THAT THERE WAS LTSS.

Narrative: IN NON RADAR ENVIRONMENT ON AIRWAYS E OF FLORIDA, R763 AND R514 AT DRIBL INTXN, MY B767 AND UNKNOWN B747 MET AT FL390. (B767 NBOUND, B747 WBOUND.) I RECEIVED A WARNING ON TCASII WHICH COMMANDED A FLY UP AND I DID SO. I SAW ACFT FROM R TO L AND TCASII DISTANCE WAS 1.75 MI. I CLBED TO FL395, THEN BACK TO FL390 AND CALLED ATC AND RPTED.

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.