Air Traffic Control Fully Certified
Other / Unknown
ATC Issue All Types; Conflict Ground Conflict; Less Severe; Deviation / Discrepancy - Procedural Other / Unknown
General None Reported / Taken
Human Factors; Procedure
An A320 was cleared for take off with traffic about 2 3/4 miles on final. The aircraft took forever to start their roll. With a 15 KT headwind; I used 1 1/2 miles as a cutoff with some movement and clearance acknowledged. The A320 still was not accelerating; when I cancelled their take off clearance. As such; it was at this time; the aircraft was powering up and then down as they acknowledged the aborted departure. Of note; the aircraft was bound for one place; and the next departure in sequence was same company; same model; going to another. The performance of the next departure roll was incredibly different. Both rotated at about the same take off distance. This is mind boggling when observed; and definitely a safety hazard for an airport with intersecting runways. These pilots need to be performing more similar in this situation; as it is undoubtedly an inconsistency in flying technique. It is unacceptable that this occurs; as this has involved unsafe aborted departures; and unfair go around's for arrivals.
SFO Controller voiced concern regarding the very different same company pilot techniques during takeoff's; the reporter noting performance within the same airline should be more consistent.