Large Transport
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 24
Situational Awareness; Human-Machine Interface; Distraction; Confusion; Workload; Troubleshooting; Time Pressure
ATC Issue All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Separated Traffic; Air Traffic Control Provided Assistance
Procedure; Company Policy
I was conducting OTJ at R28. Aircraft X to BWI; was failing on the automated handoff to ZDC. The EDST (En-route Decision Support Tool) displayed a UTM (un-transmitted message) message that we nor the D-side had noticed due to the complexity and volume of traffic. When attempting a manual handoff to ZDC they advised us that they didn't have a flight plan because they had Aircraft Y from BWI that they needed to make a manual handoff to us on. The aircraft with the same call signs passed approximately 8 miles apart just NE of GSO. The ramifications of this go without saying.Demand that the air carriers not let this happen.
ZTL Controller reports of a handoff issues with ZDC.  They couldn't handoff a specific aircraft because there was another aircraft with the same call sign that ZDC was attempting to handoff to ZTL.