Narrative:

Cga X was inbound on the ILS runway 6, and the commuter air carrier Y was departing to the southwest on runway 24. I was a training instrument giving training at a non radar sector, which was combined at a radar sector. The stewart radar controller in this instance was communicating with cga X on his frequency, while the catskill controller does all interfacility coordination in order to run the sector. The tower requested clearance and release on air carrier Y. Clearance was given and coordination was effected. At the time release had been given, the radar controller had scanned our active traffic bay and given cga X the ILS 6. I thought that cgz X was between ign VOR and position beacon heading southwest, and still had at least a minute before he would start his pt for the ILS 6. In reality, cga X had already turned inbound and was given a straight-in ILS 6. I attribute the error to lack of awareness of cga X's actual position, caused by insufficient communication between myself as the instrument and the radar controller who actually gave the clearance. I am certainly not making excuses for my error! I made a bad mistake. The 2 aircraft made visibility contact with each other after cga X had broken out. Cga X executed a safe missed approach and air carrier Y continued on his departure visually avoiding cga X. Supplemental information from acn 125681: after capturing G/south, we continued the approach until about 600' MSL (400' AGL), and upon runway in sight, observed an aircraft on the takeoff roll on runway 24. We elected to make a right, climbing turn to avoid the departing aircraft from climbing into us.

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Original NASA ASRS Text

Title: AN ARRIVING CGA MADE A MISSED APCH DUE TO A DEPARTING OPPOSITE DIRECTION ACR.

Narrative: CGA X WAS INBND ON THE ILS RWY 6, AND THE COMMUTER ACR Y WAS DEPARTING TO THE SW ON RWY 24. I WAS A TRNING INSTR GIVING TRNING AT A NON RADAR SECTOR, WHICH WAS COMBINED AT A RADAR SECTOR. THE STEWART RADAR CTLR IN THIS INSTANCE WAS COMMUNICATING WITH CGA X ON HIS FREQ, WHILE THE CATSKILL CTLR DOES ALL INTERFAC COORD IN ORDER TO RUN THE SECTOR. THE TWR REQUESTED CLRNC AND RELEASE ON ACR Y. CLRNC WAS GIVEN AND COORD WAS EFFECTED. AT THE TIME RELEASE HAD BEEN GIVEN, THE RADAR CTLR HAD SCANNED OUR ACTIVE TFC BAY AND GIVEN CGA X THE ILS 6. I THOUGHT THAT CGZ X WAS BTWN IGN VOR AND POSITION BEACON HDG SW, AND STILL HAD AT LEAST A MINUTE BEFORE HE WOULD START HIS PT FOR THE ILS 6. IN REALITY, CGA X HAD ALREADY TURNED INBND AND WAS GIVEN A STRAIGHT-IN ILS 6. I ATTRIBUTE THE ERROR TO LACK OF AWARENESS OF CGA X'S ACTUAL POS, CAUSED BY INSUFFICIENT COM BTWN MYSELF AS THE INSTR AND THE RADAR CTLR WHO ACTUALLY GAVE THE CLRNC. I AM CERTAINLY NOT MAKING EXCUSES FOR MY ERROR! I MADE A BAD MISTAKE. THE 2 ACFT MADE VIS CONTACT WITH EACH OTHER AFTER CGA X HAD BROKEN OUT. CGA X EXECUTED A SAFE MISSED APCH AND ACR Y CONTINUED ON HIS DEP VISUALLY AVOIDING CGA X. SUPPLEMENTAL INFO FROM ACN 125681: AFTER CAPTURING G/S, WE CONTINUED THE APCH UNTIL ABOUT 600' MSL (400' AGL), AND UPON RWY IN SIGHT, OBSERVED AN ACFT ON THE TKOF ROLL ON RWY 24. WE ELECTED TO MAKE A RIGHT, CLBING TURN TO AVOID THE DEPARTING ACFT FROM CLBING INTO US.

Data retrieved from NASA's ASRS site as of August 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.