Light Transport; Low Wing; 2 Turbojet Eng
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 19.1
Communication Breakdown; Confusion; Distraction
ATC Issue All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Published Material / Policy
Procedure
Aircraft Y; inbound to CAE from the west.  Aircraft Y was on H110 for descent behind traffic.  Once clear of that aircraft; and crossing the extended centerline of RWY 23 south of the airport; I cleared Aircraft Y to the VOR; descending to 022.  I had a departure strip for Aircraft X; off RWY 23; H330.  LC coordinated with RAN to leave Aircraft X runway heading due to a departure off RWY 29.  RAN approved the request and advised me of same.  Aircraft X departed RWY 23 climbing to 40; but never called Departure.   I turned Aircraft Y to H090 then called Aircraft X; he responded; I turned him right H290.Better coordination and planning.  Instead of runway heading Aircraft X should have been given H250 or 270 to ensure separation from the downwind arrival and still not conflict with the RWY 29 departure.  I should have requested RAN to go back and coordinate that heading.
I was training on the Radar Associate position when Tower called and apreq'd a north departure runway heading off runway 23.  I approved the request; wrote it on the strip and informed the Radar Controller. The Radar Controller had an arrival coming to runway 29 Aircraft Y whom he descended to 022 about 8 south of the airport.  He later turned the arrival direct to the Columbia VOR which ended up putting the Aircraft Y in close proximity to the departure.  It looked like he had at least 3 miles on the radar scope and the collision alert never went off so I thought he was clean.  However after further review I was informed that there were only 2.81 miles of separation.I would recommend leaving the arrivals at 5000 until well clear of the departure area; so as to miss Towers' departing traffic.
CAE Approach Controllers report of operational error due to coordination or lack of on headings.