Regional Jet 700 ER/LR (CRJ700)
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 5.0
Communication Breakdown; Situational Awareness
ATC Issue All Types; Airspace Violation All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance; Air Traffic Control Separated Traffic
Human Factors; Airspace Structure; Procedure
We were on noise abatement procedures for midnight operations off ZZZ and ZZZ1. I told ZZZ to hold their night departures because they instantly conflict with ZZZ1 departures. Then I gave ZZZ1 a departure release. About 4 minutes go by and I see a target climbing off of ZZZ. I get a call from ZZZ apologizing for launching an aircraft. On initial contact I turn the ZZZ departure east to a 050 heading because my ZZZ1 departure is climbing fast. If I had not gotten communication when I did they could have potentially hit. As it was I believe standard separation was still lost between the two departures. ZZZ failed to follow a control instruction resulting in an unsafe situation.The noise abatement departure off ZZZ and ZZZ1 are designed in a way that they automatically conflict. I would not be surprised if there is a long history of conflicts like this.
The Tower Controller was supposed to hold a departure but allowed the aircraft to depart. The aircraft was in conflict with a departure from an adjacent airport.