B757-200
Air Traffic Control Fully Certified
Communication Breakdown
ATC Issue All Types
Air Traffic Control Issued New Clearance
Human Factors; Procedure; Company Policy
Similar call sign issue. I was in training. These two call signs are often on the same frequency at the same time; and have been submitted as a problem before. A B737-800 was the inbound; I believe; and a B757-200; the departure. The arrival was taken off the STAR as a vector behind traffic. When I shipped the outbound to another facility; the wrong aircrat answered and I did not catch the bad read back. When I tried to vector the arrival back onto the STAR; the action was delayed because that aircraft had changed to the other facility's frequency. No loss or issue with other aircraft resulted; but it definitely increased the complexity and frequency congestion when there was confusion between the two aircraft. Recommendation; change these call signs ASAP.
TRACON Controller described an unsafe condition resulting from similar company flight numbers operating within the same airspace at the same time.