A319
Air Traffic Control Fully Certified
Situational Awareness
ATC Issue All Types; Conflict Airborne Conflict; Deviation - Altitude Overshoot; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Issued New Clearance
Human Factors
An A319 was in level flight at FL350 and he requested a climb to FL370. I did not do an adequate traffic search and climbed him. Within one minute; the A319 and Air Carrier Y started flashing. Air Carrier Y was in level flight at FL360. I quickly turned the A319 thirty degrees left for traffic and he complied. I then turned Air Carrier Y thirty degrees left and descended him to FL340 for traffic. Air Carrier Y then asked if he could climb to FL380. I came back on the frequency and told him to turn thirty degrees left and descend immediately. He came back questioning the turn and I told him to just descend and turn now. Luckily the A319 understood the gravity of the situation and picked up his climb rate and when I asked for altitude reports from both aircraft I had five miles and 1;000 FT. Air Carrier Y actions were not good enough. When a control instruction is issued for traffic; it needs to be accomplished and not debated. I was extremely concerned for about 30 seconds that the two aircraft might collide mid-air. I need to do a better traffic scan that is basic ATC. The pilots need to act quicker and accordingly and not drag their feet on these clearances.
Enroute Controller described a conflict event at FL350/370; claiming one of the aircraft was slow to respond when given an instruction contributing to the occurrence.