PLTDEV OPERROR.

Narrative

SAFETY ON THE RADIO -- A SHARED RESPONSIBILITY. ANOTHER READBACK ERROR. I WAS WORKING THE FINAL APCH SECTOR FOR THE ORL ARPT ON DEC/FRI/94. I HAD ACR X ON THE E DOWNWIND EXPECTING RWY 17. I HAD ACR Y ON THE W DOWNWIND ALSO EXPECTING RWY 17. I TURNED ACR X TO A 270 DEG HDG AND ACR Y TO A 090 DEG HDG. ACR Y WAS ABOUT 4.5 MI N OF ACR X; AND WAS BEING VECTORED TO FOLLOW ACR X. I TURNED ACR X (BY ACCIDENT) R HDG 150 DEGS AND CLRED THEM FOR THE ILS APCH. ACR Y READ BACK THE CLRNC AND AT THE END OF HIS READBACK HE SAID Y. I DID NOT CATCH THE PLT SAY Y. ACR Y WAS PROBABLY EXPECTING THAT XMISSION AND THOUGHT IT WAS FOR HIM. I WAS SEMI-BUSY AT THE TIME AND WAS PLANNING MY NEXT MOVE. I MADE 2 MISSIONS TO 2 DIFFERENT ACFT AND THEN TOLD ACR Y TO 'FLY HDG 120 DEGS' IN AN EFFORT TO GET HIM BEHIND ACR X WHOM I THOUGHT WAS TURNING ON THE APCH. DURING MY XMISSION TO ACR Y; I DECIDED NOT TO TURN HIM AND TOLD HIM TO 'CONTINUE EBOUND.' THE FREQ WAS TOO CONGESTED FOR ACR X TO QUESTION THE INSTRUCTION AND SINCE I DID NOT QUESTION ACR Y; ACR X ASSUMED HE HEARD WRONG AND CONTINUED WBOUND. A SUPVR BEHIND ME NOTICED THAT ACR Y WAS NOT EBOUND AND I TOOK EVASIVE ACTION WITH BOTH ACFT TO AVOID A COLLISION. THE ACFT PASSED APPROX 1.3 MI AND 500 FT FROM EACH OTHER. ALTHOUGH IT IS THE RESPONSIBILITY OF THE CTLR TO CATCH A WRONG READBACK; IT MUST BE THE RESPONSIBILITY OF THE PLT TO LISTEN VERY CAREFULLY TO THE RADIO. I FEEL THIS ERROR IS 50 PERCENT ACR Y'S FAULT. I WAS DECERTIFIED AND RETRAINED ON THE POS BECAUSE I MISSED THE READBACK AND LOST SEPARATION. I ADMIT; NOT CATCHING THE WRONG READBACK WAS MY MISTAKE; BUT IT WAS ALSO THE PLT'S MISTAKE TAKING SOMEONE ELSE'S INSTRUCTIONS. IF THIS DID NOT HAPPEN ACR X WOULD HAVE QUESTIONED HIS CLRNC AND THE WHOLE INCIDENT WOULD NOT HAVE HAPPENED.