Narrative:

I departed teb on jun/thu/96 at approximately XX25L in gulfstream with copilot on an IFR flight plan en route to home base at oxc. We were ferrying an empty aircraft subsequent to completion of charter flight mdw to teb. After clearing the new york class B airspace north of the tappan zee bridge, I requested cancellation of my IFR flight plan requesting to proceed VFR to destination with radar advisories. This accomplished, I informed the controller we were climbing to 7500 ft MSL for a couple of 'steep turns.' first officer is new on the aircraft, and I deemed it appropriate to provide g-iii training. At the completion of 2 steep turns, I directed a speed brake descent to 3500 ft for the remainder of the flight to destination. I so informed the controller, and he mentioned traffic to our north which I acknowledged as seeing. During level flight at 3500 ft an aircraft passed over and behind us on a southerly heading. Upon arrival at oxc a company colleague, arriving at home base in a hawker 700, informed me a turboprop commuter flight was in discussion with new york approach control concerning his TCASII providing him an alert. Friday morning an employee of oxc FBO informed me that an airport employee had learned a report was being filed on our aircraft for an incident that occurred on the previous evening.

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Original NASA ASRS Text

Title: G-III FLC DOING MANEUVERS HAS COMMUTER ACFT PASS OVER AND BEHIND IT DURING LEVEL FLT. SECOND ACFT HAS A TCASII ALERT.

Narrative: I DEPARTED TEB ON JUN/THU/96 AT APPROX XX25L IN GULFSTREAM WITH COPLT ON AN IFR FLT PLAN ENRTE TO HOME BASE AT OXC. WE WERE FERRYING AN EMPTY ACFT SUBSEQUENT TO COMPLETION OF CHARTER FLT MDW TO TEB. AFTER CLRING THE NEW YORK CLASS B AIRSPACE N OF THE TAPPAN ZEE BRIDGE, I REQUESTED CANCELLATION OF MY IFR FLT PLAN REQUESTING TO PROCEED VFR TO DEST WITH RADAR ADVISORIES. THIS ACCOMPLISHED, I INFORMED THE CTLR WE WERE CLBING TO 7500 FT MSL FOR A COUPLE OF 'STEEP TURNS.' FO IS NEW ON THE ACFT, AND I DEEMED IT APPROPRIATE TO PROVIDE G-III TRAINING. AT THE COMPLETION OF 2 STEEP TURNS, I DIRECTED A SPD BRAKE DSCNT TO 3500 FT FOR THE REMAINDER OF THE FLT TO DEST. I SO INFORMED THE CTLR, AND HE MENTIONED TFC TO OUR N WHICH I ACKNOWLEDGED AS SEEING. DURING LEVEL FLT AT 3500 FT AN ACFT PASSED OVER AND BEHIND US ON A SOUTHERLY HDG. UPON ARR AT OXC A COMPANY COLLEAGUE, ARRIVING AT HOME BASE IN A HAWKER 700, INFORMED ME A TURBOPROP COMMUTER FLT WAS IN DISCUSSION WITH NEW YORK APCH CTL CONCERNING HIS TCASII PROVIDING HIM AN ALERT. FRIDAY MORNING AN EMPLOYEE OF OXC FBO INFORMED ME THAT AN ARPT EMPLOYEE HAD LEARNED A RPT WAS BEING FILED ON OUR ACFT FOR AN INCIDENT THAT OCCURRED ON THE PREVIOUS EVENING.

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.