Narrative:

We had been in cnw for approximately 3 hours working with their approach, tower, and ground controllers, executing multiple approachs and training maneuvers in a learjet 24F aircraft. As the day progressed, winds had shifted to the north and cnw began using runway 35R for takeoffs and lndgs. We continued to practice precision approachs using the ILS runway 17L cnw and, working with the ATC controllers, would fly the approach to ILS runway 17L CAT C minimums and then execute the missed approach. ATC was issuing us modified missed approach instructions, which generally ranged from climbs to 2300-2700 ft MSL and turns to the left to headings around 060-080 degrees. We had been cleared for the ILS runway 17L. We had just passed the FAF inbound at approximately 1600 ft MSL on the localizer and GS. A military B707 that had been doing training in the area had just departed runway 35R at cnw and was in a climbing left turn. I had visual contact with the B707 while my student continued to fly the approach. We were in radio contact with the tower and they announced 'lear XXX execute missed approach.' we performed our learjet procedures to fly the missed approach. At that point the tower told us to turn left 080 degrees immediately, which I advised we had already begun. I then took the controls from the student and rolled the aircraft into a 45 degree bank to the left until 080 degree heading was achieved and we continued the missed approach. Even though visual contact was held between our learjet and the B707, my concern is the lack of planning from the tower as to the separation of my aircraft on the ILS runway 17L and to the departing B707 on runway 35R. We are not equipped with TCASII, however, the B707 may have been, and could have received an alert. I believe that if we had been told to execute the missed approach earlier that this situation would have been avoided. We discussed this situation with tower upon landing and continued training without further incident.

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Original NASA ASRS Text

Title: LR24 CREW TAKES EVASIVE ACTION TO AVOID DEPARTING TFC AT CNW.

Narrative: WE HAD BEEN IN CNW FOR APPROX 3 HRS WORKING WITH THEIR APCH, TWR, AND GND CTLRS, EXECUTING MULTIPLE APCHS AND TRAINING MANEUVERS IN A LEARJET 24F ACFT. AS THE DAY PROGRESSED, WINDS HAD SHIFTED TO THE N AND CNW BEGAN USING RWY 35R FOR TKOFS AND LNDGS. WE CONTINUED TO PRACTICE PRECISION APCHS USING THE ILS RWY 17L CNW AND, WORKING WITH THE ATC CTLRS, WOULD FLY THE APCH TO ILS RWY 17L CAT C MINIMUMS AND THEN EXECUTE THE MISSED APCH. ATC WAS ISSUING US MODIFIED MISSED APCH INSTRUCTIONS, WHICH GENERALLY RANGED FROM CLBS TO 2300-2700 FT MSL AND TURNS TO THE L TO HDGS AROUND 060-080 DEGS. WE HAD BEEN CLRED FOR THE ILS RWY 17L. WE HAD JUST PASSED THE FAF INBOUND AT APPROX 1600 FT MSL ON THE LOC AND GS. A MIL B707 THAT HAD BEEN DOING TRAINING IN THE AREA HAD JUST DEPARTED RWY 35R AT CNW AND WAS IN A CLBING L TURN. I HAD VISUAL CONTACT WITH THE B707 WHILE MY STUDENT CONTINUED TO FLY THE APCH. WE WERE IN RADIO CONTACT WITH THE TWR AND THEY ANNOUNCED 'LEAR XXX EXECUTE MISSED APCH.' WE PERFORMED OUR LEARJET PROCS TO FLY THE MISSED APCH. AT THAT POINT THE TWR TOLD US TO TURN L 080 DEGS IMMEDIATELY, WHICH I ADVISED WE HAD ALREADY BEGUN. I THEN TOOK THE CTLS FROM THE STUDENT AND ROLLED THE ACFT INTO A 45 DEG BANK TO THE L UNTIL 080 DEG HDG WAS ACHIEVED AND WE CONTINUED THE MISSED APCH. EVEN THOUGH VISUAL CONTACT WAS HELD BTWN OUR LEARJET AND THE B707, MY CONCERN IS THE LACK OF PLANNING FROM THE TWR AS TO THE SEPARATION OF MY ACFT ON THE ILS RWY 17L AND TO THE DEPARTING B707 ON RWY 35R. WE ARE NOT EQUIPPED WITH TCASII, HOWEVER, THE B707 MAY HAVE BEEN, AND COULD HAVE RECEIVED AN ALERT. I BELIEVE THAT IF WE HAD BEEN TOLD TO EXECUTE THE MISSED APCH EARLIER THAT THIS SIT WOULD HAVE BEEN AVOIDED. WE DISCUSSED THIS SIT WITH TWR UPON LNDG AND CONTINUED TRAINING WITHOUT FURTHER INCIDENT.

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.