Large Transport
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 6
Confusion
ATC Issue All Types; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance; Air Traffic Control Provided Assistance
Procedure
Just like my report from yesterday. Aircraft X assigned routing SFO.OFFSHORE7.SXC... After MCKEY the aircraft starts heading off course. At MQO; which is five miles east of the assigned route; my trainee cleared the aircraft direct DAISY. I asked the aircraft what they showed as their next point of navigation and the pilot exclaimed that they were direct DAISY. I did not argue with the pilot; but they had to make a good right turn to head to DAISY. They were five miles east of course and heading further east. Yesterday's aircraft was a different carrier and this one was Aircraft X; but they were both off of SFO. I would start by checking the DATA LINK clearances and make sure that the Flight Management System is receiving the OFFSHORE7 SXC transition clearance. Until someone is able to fix this we are just briefing each other to anticipate the deviation.
ZLA enroute Controller reports problem that happened the day before happened this day that deals with incorrect routing being given to aircraft causing confusion and corrections having to be made by the Controller.