Air Traffic Control Developmental
Situational Awareness
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance
Human Factors
A B350 called me on a 090 heading. He hadn't tagged up yet but I had a primary target; so I RADAR ID'd him and asked his altitude. He responded he was out of 026. I didn't hear final descend a Hawker (apparently Tower approved a point-out) out of 050 on the downwind. When the tag on the B350 came up (the Mode C altitude had not displayed yet) final came over to me and asked if he was stopped at 030. I said no. He said he stopped the Hawker at 040. I told the B350 to maintain 030 for traffic. At that moment his Mode C displayed and he was already at 036 (maybe even 038; I do not readily recall). I told him to turn to heading 360 immediately. At the same time; final turned the Hawker to a 180 heading. The B350 had already started descending and complied with the turn de-conflicting the two aircraft. Tower should have advised final of the traffic that was still in their departure release area prior to approving a lower altitude for the Hawker.
Training on Local Control 1; a B350 had been departed [Runway] 2C on heading 090. I confirmed the B350 clear of [Runway] 2R for departure Air Commercial traffic. Final flashed point out on the Hawker on downwind. Never having seen this situation in training before; I assumed that final would be aware of the B350 as known traffic as he had been scanned and cleared for take off at least 2 minutes prior. I knew that the [Runway] 2R Air Carrier traffic would miss the Hawker and believed that the Controller pointing out the Hawker would have to know about and miss the B350 since he had been scanned into the computer and had been airborne for some time. It would be very helpful in this situation and numerous others that I have seen to get some training and/or OJT in the TRACON before and/or while training on Local Control. There is no formal classroom training here and making this type of mistake is the predominant way to learn the position.
TRACON developmental described a loss of separation event when communications between the reporter and another developmental in the tower cab fail to address the impending situation.