Narrative:

IFR flight plan from cos to gjt. Called field in sight and requested to switch tower at approximately 18 mi. I was clear for a visual approach to runway 29 and switched to tower at approximately 12 mi. Check-in was delayed due to tower reading an IFR clearance and then communication with a second aircraft (not the departing bizjet). Visual lookout was primarily for aircraft that might be entering in the same direction. Finally, I was able to call a 2 mi initial, descending through 7000-8000 ft (estimate) to the 6500 ft pattern. I don't remember the exact communication from the tower, but it didn't include a traffic call. I next looked up and saw a bizjet pass an estimated 400 ft above me in a steep climb from runway 11. An evasive maneuver was not required. The subsequent overhead pattern and landing were uneventful.

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Original NASA ASRS Text

Title: NORTHROP T38 AND BIZJET HAD NMAC. BOTH ACFT WERE UNDER DIRECT TWR CTL.

Narrative: IFR FLT PLAN FROM COS TO GJT. CALLED FIELD IN SIGHT AND REQUESTED TO SWITCH TWR AT APPROX 18 MI. I WAS CLR FOR A VISUAL APCH TO RWY 29 AND SWITCHED TO TWR AT APPROX 12 MI. CHK-IN WAS DELAYED DUE TO TWR READING AN IFR CLRNC AND THEN COM WITH A SECOND ACFT (NOT THE DEPARTING BIZJET). VISUAL LOOKOUT WAS PRIMARILY FOR ACFT THAT MIGHT BE ENTERING IN THE SAME DIRECTION. FINALLY, I WAS ABLE TO CALL A 2 MI INITIAL, DSNDING THROUGH 7000-8000 FT (ESTIMATE) TO THE 6500 FT PATTERN. I DON'T REMEMBER THE EXACT COM FROM THE TWR, BUT IT DIDN'T INCLUDE A TFC CALL. I NEXT LOOKED UP AND SAW A BIZJET PASS AN ESTIMATED 400 FT ABOVE ME IN A STEEP CLB FROM RWY 11. AN EVASIVE MANEUVER WAS NOT REQUIRED. THE SUBSEQUENT OVERHEAD PATTERN AND LNDG WERE UNEVENTFUL.

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.