Narrative:

During departure from runway 17R and passing approximately 4500 ft MSL on an assigned heading of 190 degrees, we received a TCASII TA for our 12 O'clock position. I quickly glanced outside to see an aircraft below our altitude, in a right turn and less than 1 mi. Immediately, I received a TCASII RA of 'descend, descend.' considering my position relative to the traffic and climb rate, I elected to increase my climb rate, take evasive action, and avoid the traffic visually. Immediately following this RA, the RA 'monitor vertical speed' was broadcast. My actions were to safely clear the traffic by maintaining a high vertical speed. The traffic was never called out by the departure controller. I queried the controller when the traffic was first acquired and he responded with 'negative' or 'no traffic.' after the traffic passed us, the controller then responded with 'he is 1000 ft below you.' I asked that the tape 'be marked.' a jump seater, familiar with the B767, remarked that the aircraft passed vertically below us at 300 ft as indicated by TCASII. My first officer estimated horizontal distance at 300-500 ft. Although the visibility was excellent, TCASII was my first indication of a traffic conflict and certainly was a life saver in resolving this potentially dangerous situation. In a discussion with the crew of the other aircraft, they departed from runway 17L and were given a right turn direct to abby, across my departure path.

Related reports:

Google
 

Original NASA ASRS Text

Title: A DEP B767-300 CARGO FLT HAS AN NMAC AT 4500 FT WITH A DEP DC8 CARGO FLT 10 MI SW OF SDF, KY.

Narrative: DURING DEP FROM RWY 17R AND PASSING APPROX 4500 FT MSL ON AN ASSIGNED HDG OF 190 DEGS, WE RECEIVED A TCASII TA FOR OUR 12 O'CLOCK POS. I QUICKLY GLANCED OUTSIDE TO SEE AN ACFT BELOW OUR ALT, IN A R TURN AND LESS THAN 1 MI. IMMEDIATELY, I RECEIVED A TCASII RA OF 'DSND, DSND.' CONSIDERING MY POS RELATIVE TO THE TFC AND CLB RATE, I ELECTED TO INCREASE MY CLB RATE, TAKE EVASIVE ACTION, AND AVOID THE TFC VISUALLY. IMMEDIATELY FOLLOWING THIS RA, THE RA 'MONITOR VERT SPD' WAS BROADCAST. MY ACTIONS WERE TO SAFELY CLR THE TFC BY MAINTAINING A HIGH VERT SPD. THE TFC WAS NEVER CALLED OUT BY THE DEP CTLR. I QUERIED THE CTLR WHEN THE TFC WAS FIRST ACQUIRED AND HE RESPONDED WITH 'NEGATIVE' OR 'NO TFC.' AFTER THE TFC PASSED US, THE CTLR THEN RESPONDED WITH 'HE IS 1000 FT BELOW YOU.' I ASKED THAT THE TAPE 'BE MARKED.' A JUMP SEATER, FAMILIAR WITH THE B767, REMARKED THAT THE ACFT PASSED VERTLY BELOW US AT 300 FT AS INDICATED BY TCASII. MY FO ESTIMATED HORIZ DISTANCE AT 300-500 FT. ALTHOUGH THE VISIBILITY WAS EXCELLENT, TCASII WAS MY FIRST INDICATION OF A TFC CONFLICT AND CERTAINLY WAS A LIFE SAVER IN RESOLVING THIS POTENTIALLY DANGEROUS SIT. IN A DISCUSSION WITH THE CREW OF THE OTHER ACFT, THEY DEPARTED FROM RWY 17L AND WERE GIVEN A R TURN DIRECT TO ABBY, ACROSS MY DEP PATH.

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.