ACR X HAD LTSS FROM VFR ACFT Y IN TCA. EVASIVE ACTION TAKEN. OPERROR.

Narrative

ABOUT 2 1/2 MI E OF THE EXTENDED CTRLINE OF RWY 1R; I SAW AN INBOUND IFR ACFT Y THAT WAS WBOUND AT 3000 FT LNDG AT A SATELLITE ARPT ABOUT 9 MI NW OF DULLES ARPT. I CALLED DOWN TO THE DEP CTLR TO LET HIM KNOW I HAD A HVY ACR X READY FOR TKOF ON RWY 1L. I ASKED THE DEP CTLR IF HE WANTED ME TO STOP THE HVY JET AT 2000 FT. THE DEP CTLR SAID TURN THE HVY ACFT ON A 300 DEG HDG. THE HVY JET WAS CLRED FOR TKOF AND ISSUED A 300 HDG AND SWITCHED TO THE DEP CTLR. LITTLE DID I KNOW; AT THIS TIME THE DEP CTLR WAS TRYING TO GET A HOLD OF ME VIA THE LANDLINE TO TELL ME TO KEEP THE HVY JET STRAIGHT OUT ON RWY HDG; BUT THE ICSS WASN'T WORKING PROPERLY. THE HVY DEP ACFT CHKED IN WITH THE DEP CTLR AND SHE ISSUED TFC TO HIM. THE SATELLITE IFR ACFT BY THIS TIME HAD CANCELLED IFR AND RPTED THE ARPT IN SIGHT. HE MADE A L TURN SE TOWARD THE HVY DEPARTING TFC. HE SEEMED TO CLB (INBOUND SATELLITE) TO ABOUT 2200 FT AND THE HVY JET PASSED REAL CLOSE OF THE GA ACFT Y. THE PLT OF THE HVY JET SAID HE HAS TO FILE A NEAR MISS. SUPPLEMENTAL INFO FROM ACN 215162: ACR X DEPARTED IAD. UNKNOWN ACFT Y APPROX 2200 FT INSIDE TCA. TFC CALLED TO ACR X AND A HDG ISSUED TO AVOID TFC. ACR X ADVISES TFC IN SIGHT AND AVOIDANCE PROCS TAKEN. WE WERE HAVING INTERPHONE PROBLEMS (EQUIP) AND I WAS UNABLE TO EFFECT AN EARLIER TURN FROM TWR CTLR PRIOR TO DEP. SUPPLEMENTAL INFO FROM ACN 214970: I WAS WORKING DEP CTL. N ARR WAS WORKING THE ACFT TO THE E. I ADVISED HIM HE CAN NOW TURN THE ACFT Y TOWARDS LEESBURG FOR THE VISUAL APCH. LCL CTL CALLED TO ADVISE THAT ACR X WILL BE DEPARTING. I ADVISED LCL TO PUT HIM ON A 300 DEG HDG. THE SINGLE ENG ACFT WAS STILL 2-3 MI E OF THE ARPT AND ABOUT 8 MI NE OF THE ARPT. THE SINGLE ENG ACFT WAS 3 MI E OF LEESBURG HDG W WHEN I WAS RELIEVED AT THE POS. ACR X WAS ALSO NOT OFF YET. THE NEXT CTLR TOOK THE POS. WHILE STANDING BEHIND THE CTLR I OBSERVED THE SINGLE ENG PLANE MAKE A L TURN TOWARDS ACR X AND CLB OUT OF 20 TO 22. ACR X CLBED VERY SLOWLY AND THE CTLR TURNED THE ACR X AND ISSUED TFC. 2 FACTORS COME INTO THIS PROBLEM. THE INABILITY TO SPEAK TO LCL AND THE ACFT Y NOT DSNDING FOR THE ARPT.