Commercial Fixed Wing
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 2.0
Communication Breakdown; Situational Awareness
ATC Issue All Types; Aircraft Equipment Problem Critical; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter Weather / Turbulence
Air Traffic Control Issued New Clearance; Air Traffic Control Separated Traffic; Flight Crew Landed in Emergency Condition
Human Factors; Procedure; Weather; Airspace Structure
Aircraft X lost pressurization and diverted to ZZZ while the aircraft was NW of the OOM VOR. Approach contacted me and coordinated on a couple of occasions to arrange the aircrafts decent to ZZZ. Aircraft Y was pointed out to me by Approach descending to 080 SW bound and deviating around weather. The aircraft were on course to merge but were separated by 1000 feet. I called traffic to Aircraft X for Aircraft Y 1000 feet above. As I watched Aircraft Y deviate further into my airspace I contacted Approach and asked if they wanted to put the aircraft on my frequency; so I could descend and turn the aircraft for [their destination]. They told me the aircraft was already talking to [another] Approach. After their courses were diverging Aircraft Y began to deviate farther south. Then the aircraft began a descent. Shortly after this the controller at [the next Approach facility] called and apologized saying he didn't realize the aircraft was going to deviate so far and told me Aircraft Y was on a 220 heading. I then called the traffic again to Aircraft X; however I failed to announce Traffic Alert. The aircraft came to within 4.45 mi of each other.I should have made my traffic call a Traffic Alert.
ZID Center Controller reported they approved a point out for an aircraft deviating for weather then allowed another aircraft they were working to fly into confliction with the pointed out aircraft.