Incident
at GANDER ACC
(ATS operating irregularity)
B767 UAL960, LR36 LEARJET 36 PHEONIX AIR N32PA, KC35 STRATOTANKER USAF M1342 - M1342 WAS ISSUED CLEARANCE TO CLIMB FROM FL370 TO FL390. NEITHER LONGITUDINAL NOR LATERAL SEPARATION EXISTED WITH EITHER UAL960 OR N32PA. ERROR WAS DETECTED BY COMPUTER PROBE AND A RE-CLEARANCE WAS ISSUED TO M1342 TO DESCEND TO FL370. TIME - 0559Z. ACTION - MAE.