Narrative:

Following a B757 cleared into position and hold on iad's runway 19R. With the clearance was informed a 'beech' on a 9 mi final for our runway. Figured that would be ok. It wasn't. After approximately 1 min 45 seconds in position, cleared for takeoff. Just prior to rotation, noticed a B-1900 was overflying us at 200-300 ft AGL. The beech began a right turn so we continued the takeoff. Unfortunately, the beech stopped the turn and flew parallel to the runway, approximately 100 ft to the west of runway centerline. Although we had been cleared for takeoff with a right turn to 240 degree heading, we maintained runway heading, as such a right turn would have pointed us towards the beech 1900. Informed the tower we would maintain runway heading due to the aircraft to our right. Controller acknowledged and instructed us to turn to southwest when clear of the beech, which would maintain 1500 ft MSL. In a later meeting with tower personnel, informed that the tower had issued the go around instruction to the BE1900 shortly after our takeoff clearance. Although the beech and our aircraft maintained safe separation visually, feel: situation should not have been allowed to develop as far as it did, an earlier ATC call for go around, or 360 degree turn on final would have been in order. Once the problem developed the tower should have been active in providing better separation, as it was, the pilots worked it out for ourselves. If I had it to do over again, would have aborted the takeoff. As it was, feel no regulations bent or broken, but situation not what it should be by any means.

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Original NASA ASRS Text

Title: AN ACR LTT ON TKOF ROLL SAW ANOTHER ACR LTT ON A GAR PASS OVERHEAD IN CLOSE PROX. DEPARTING LTT MAINTAINED VISUAL SEPARATION FROM THE OTHER ACFT UNTIL GIVEN A TURN BEHIND IT.

Narrative: FOLLOWING A B757 CLRED INTO POS AND HOLD ON IAD'S RWY 19R. WITH THE CLRNC WAS INFORMED A 'BEECH' ON A 9 MI FINAL FOR OUR RWY. FIGURED THAT WOULD BE OK. IT WASN'T. AFTER APPROX 1 MIN 45 SECONDS IN POS, CLRED FOR TKOF. JUST PRIOR TO ROTATION, NOTICED A B-1900 WAS OVERFLYING US AT 200-300 FT AGL. THE BEECH BEGAN A R TURN SO WE CONTINUED THE TKOF. UNFORTUNATELY, THE BEECH STOPPED THE TURN AND FLEW PARALLEL TO THE RWY, APPROX 100 FT TO THE W OF RWY CTRLINE. ALTHOUGH WE HAD BEEN CLRED FOR TKOF WITH A R TURN TO 240 DEG HDG, WE MAINTAINED RWY HDG, AS SUCH A R TURN WOULD HAVE POINTED US TOWARDS THE BEECH 1900. INFORMED THE TWR WE WOULD MAINTAIN RWY HDG DUE TO THE ACFT TO OUR R. CTLR ACKNOWLEDGED AND INSTRUCTED US TO TURN TO SW WHEN CLR OF THE BEECH, WHICH WOULD MAINTAIN 1500 FT MSL. IN A LATER MEETING WITH TWR PERSONNEL, INFORMED THAT THE TWR HAD ISSUED THE GAR INSTRUCTION TO THE BE1900 SHORTLY AFTER OUR TKOF CLRNC. ALTHOUGH THE BEECH AND OUR ACFT MAINTAINED SAFE SEPARATION VISUALLY, FEEL: SIT SHOULD NOT HAVE BEEN ALLOWED TO DEVELOP AS FAR AS IT DID, AN EARLIER ATC CALL FOR GAR, OR 360 DEG TURN ON FINAL WOULD HAVE BEEN IN ORDER. ONCE THE PROB DEVELOPED THE TWR SHOULD HAVE BEEN ACTIVE IN PROVIDING BETTER SEPARATION, AS IT WAS, THE PLTS WORKED IT OUT FOR OURSELVES. IF I HAD IT TO DO OVER AGAIN, WOULD HAVE ABORTED THE TKOF. AS IT WAS, FEEL NO REGS BENT OR BROKEN, BUT SIT NOT WHAT IT SHOULD BE BY ANY MEANS.

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.