Narrative:

Aircraft #2 departing runway 16R, flying runway heading, climbing. Aircraft #1 departing runway 10, flying runway heading, climbing. Aircraft #2 was left runway heading, and his on course heading would be 350 degrees. As soon as aircraft #2 passed through the intersection of runway 10, aircraft #1 was cleared for takeoff. Aircraft #2 was about 1 1/2 mi south and was given a left turn to heading 110 degrees and was told about the B737 and to report the aircraft in sight. Aircraft #2 soon reported the B737 in sight. I then told the pilot to maintain visual separation turn left to 350 degrees. I then went back to the B737, issued the traffic and what the pilot of aircraft #2 was doing. The pilot of the B737 reported that the E120 was also in sight. I then shipped the pilot of aircraft #1 to departure. The pilot of aircraft #2 asked if the B737 was going to turn and also asked if the B737 had a restr climb. I said negative and if needed he can have a right turn to the VOR then on course. The pilot of aircraft #2 said I've got it now. I rogered and shipped him to departure. The confusion arose because aircraft #1 wasn't completely aware of what aircraft #2 was going to do. Also a factor was my decision to let the pilots work out the crossing courses. I couldn't hold the departure of aircraft #1 too long, I had traffic to land runway 10. Some of the solutions are as follows: hold aircraft #1 short to give ample spacing. Turn aircraft #2 to the right from the start. Leave them both on runway heading and climbing. Keep all aircraft on my frequency so as to inform them of everything then ship them to departure after they have crossed. Lesson learned: safety first, orderly, expeditious last.

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Original NASA ASRS Text

Title: RPTED CONVERGING XING COURSE SIT WITH VISUAL SEPARATION APPLIED BY EMD120. RPTR IMPLIES B737 FLC CONFUSION ABOUT WHAT EMB120 WAS GOING TO DO REF THEIR ACFT.

Narrative: ACFT #2 DEPARTING RWY 16R, FLYING RWY HDG, CLBING. ACFT #1 DEPARTING RWY 10, FLYING RWY HDG, CLBING. ACFT #2 WAS L RWY HDG, AND HIS ON COURSE HDG WOULD BE 350 DEGS. AS SOON AS ACFT #2 PASSED THROUGH THE INTXN OF RWY 10, ACFT #1 WAS CLRED FOR TKOF. ACFT #2 WAS ABOUT 1 1/2 MI S AND WAS GIVEN A L TURN TO HDG 110 DEGS AND WAS TOLD ABOUT THE B737 AND TO RPT THE ACFT IN SIGHT. ACFT #2 SOON RPTED THE B737 IN SIGHT. I THEN TOLD THE PLT TO MAINTAIN VISUAL SEPARATION TURN L TO 350 DEGS. I THEN WENT BACK TO THE B737, ISSUED THE TFC AND WHAT THE PLT OF ACFT #2 WAS DOING. THE PLT OF THE B737 RPTED THAT THE E120 WAS ALSO IN SIGHT. I THEN SHIPPED THE PLT OF ACFT #1 TO DEP. THE PLT OF ACFT #2 ASKED IF THE B737 WAS GOING TO TURN AND ALSO ASKED IF THE B737 HAD A RESTR CLB. I SAID NEGATIVE AND IF NEEDED HE CAN HAVE A R TURN TO THE VOR THEN ON COURSE. THE PLT OF ACFT #2 SAID I'VE GOT IT NOW. I ROGERED AND SHIPPED HIM TO DEP. THE CONFUSION AROSE BECAUSE ACFT #1 WASN'T COMPLETELY AWARE OF WHAT ACFT #2 WAS GOING TO DO. ALSO A FACTOR WAS MY DECISION TO LET THE PLTS WORK OUT THE XING COURSES. I COULDN'T HOLD THE DEP OF ACFT #1 TOO LONG, I HAD TFC TO LAND RWY 10. SOME OF THE SOLUTIONS ARE AS FOLLOWS: HOLD ACFT #1 SHORT TO GIVE AMPLE SPACING. TURN ACFT #2 TO THE R FROM THE START. LEAVE THEM BOTH ON RWY HDG AND CLBING. KEEP ALL ACFT ON MY FREQ SO AS TO INFORM THEM OF EVERYTHING THEN SHIP THEM TO DEP AFTER THEY HAVE CROSSED. LESSON LEARNED: SAFETY FIRST, ORDERLY, EXPEDITIOUS LAST.

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.