Air Traffic Control Fully Certified
Situational Awareness
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance
Human Factors
An A320 departed on SID X. A GLF5 departed on the SID Y and was instructed to maintain visual separation with the A320 departing before him. The GLF5 failed to maintain visual separation with the departing aircraft because the GLF5 had a greater climb rate than the A320. The GLF5 was leaving 041 as he reported he lost sight of the departing traffic which was at 035. I called traffic and the GLF5 still did not have the A320 in sight. The next transmission was a vector for separation. When the GLF5 reported he lost sight of departing traffic; I should have vectored for separation first and then call traffic. Unfortunately I called traffic first; then vectored for separation.
TRACON Controller experienced a loss of separation when attempting to establish visual separation between two successive departures; the second aircraft climbed faster than the first.