Narrative:

I took a handoff on military fgt-1 from 20 mi west of den at 11000 ft. The DR2 controller, who was right next to me, asked how I wanted the military fgt (incomplete call sign). At that time the only military fgt I knew about was military fgt-1. I said put him on a 150 degree heading down to 9000 ft. He said, are you sure, did you coordinate with DR1, at least that's what I thought I heard. I said affirmative and immediately went to DR1 and made sure there was no confusion that I wanted military fgt-1 on a 150 degree heading down to 9000 ft. I worked military fgt-1 into bkf VFR then got a handoff on military fgt- 2 25 mi sse of den not knowing anything had happened. I worked military fgt-2 into bkf then got relieved on the position. Supplemental information from acn 408083: I was working a flight of 2 F-18's north of denver en route to bkf. I had previously handed off a similar sounding call sign to another sector west of the airport. A controller working the south sector, sitting next to me, heard me issue instructions to my flight, assumed it was the flight west of the airport that he was waiting for, initiates control instructions to me to turn and descend the flight that I was working. I asked the controller to confirm the heading and altitude, and questioned if the flight had been pointed out to other sectors. He confirmed all of the above. I turned and descended the flight. I later observed a potential conflict, turned and climbed the F18's, but it was too late to avoid loss of separation.

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Original NASA ASRS Text

Title: TRACON CTLR ACCEPTS NON-SPECIFIC COORD AND ISSUES CTL INSTRUCTIONS FOR MIL FGT ARR, THINKING OTHER CTLR IS COORDINATING FOR PROPOSED ARR STRIP POSTED FOR HIS SECTOR. CTLR INITIATES COORD TO ADJOINING SECTOR FOR WRONG MIL FGT. OTHER CTLR HANDS OFF ANOTHER MIL FGT ON HEADING AND ALT SPECIFIED. INCORRECT COORD WITH OTHER CTL SECTORS INVOLVES OPERROR WITH 2 ACR ACFT IN A THIRD, ADJOINING SECTOR.

Narrative: I TOOK A HDOF ON MIL FGT-1 FROM 20 MI W OF DEN AT 11000 FT. THE DR2 CTLR, WHO WAS RIGHT NEXT TO ME, ASKED HOW I WANTED THE MIL FGT (INCOMPLETE CALL SIGN). AT THAT TIME THE ONLY MIL FGT I KNEW ABOUT WAS MIL FGT-1. I SAID PUT HIM ON A 150 DEG HDG DOWN TO 9000 FT. HE SAID, ARE YOU SURE, DID YOU COORDINATE WITH DR1, AT LEAST THAT'S WHAT I THOUGHT I HEARD. I SAID AFFIRMATIVE AND IMMEDIATELY WENT TO DR1 AND MADE SURE THERE WAS NO CONFUSION THAT I WANTED MIL FGT-1 ON A 150 DEG HDG DOWN TO 9000 FT. I WORKED MIL FGT-1 INTO BKF VFR THEN GOT A HDOF ON MIL FGT- 2 25 MI SSE OF DEN NOT KNOWING ANYTHING HAD HAPPENED. I WORKED MIL FGT-2 INTO BKF THEN GOT RELIEVED ON THE POS. SUPPLEMENTAL INFO FROM ACN 408083: I WAS WORKING A FLT OF 2 F-18'S N OF DENVER ENRTE TO BKF. I HAD PREVIOUSLY HANDED OFF A SIMILAR SOUNDING CALL SIGN TO ANOTHER SECTOR W OF THE ARPT. A CTLR WORKING THE S SECTOR, SITTING NEXT TO ME, HEARD ME ISSUE INSTRUCTIONS TO MY FLT, ASSUMED IT WAS THE FLT W OF THE ARPT THAT HE WAS WAITING FOR, INITIATES CTL INSTRUCTIONS TO ME TO TURN AND DSND THE FLT THAT I WAS WORKING. I ASKED THE CTLR TO CONFIRM THE HEADING AND ALT, AND QUESTIONED IF THE FLT HAD BEEN POINTED OUT TO OTHER SECTORS. HE CONFIRMED ALL OF THE ABOVE. I TURNED AND DSNDED THE FLT. I LATER OBSERVED A POTENTIAL CONFLICT, TURNED AND CLBED THE F18'S, BUT IT WAS TOO LATE TO AVOID LOSS OF SEPARATION.

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.