CTLR CLAIMS THAT SOME PLTS ARE NOT READING THE ENTIRE PDC AND AS A RESULT ARE FLYING A DIFFERENT AIRWAY THAN SPECIFIED.

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THE DEP ROUTING SBOUND OUT OF SLC 'FLIP FLOPS' DEPENDING ON THE RWY IN USE (34 OR 16). APPROX 95 PERCENT OF THE SBOUND DEPS FILE SLC-FFLL J9 MLF. WITH RWY 16 IN USE AT SLC THESE ACFT ARE RERTED VIA PDC. I UNDERSTAND THE PDC SHOWS THE FILED ROUTING AND BELOW THIS THE AMENDED ROUTING. PROB: IT HAS BEEN MY EXPERIENCE WHILE WORKING THE SECTOR S OF SLC; THAT SEVERAL TIMES PER SHIFT ACFT WHICH HAVE RECEIVED PDC WITH AMENDED ROUTING HAVE NOT PICKED UP ON THE AMENDMENT; THUS INSTEAD OF FLYING J11- J107-MLF AFTER FFU THEY ARE TURNING AFTER FFU ON J9 PLACING ARR AND DEP TFC HEAD ON. I HAVE MYSELF ON NUMEROUS OCCASIONS HAD TO HAVE THOSE ACFT MAKE SOME VERY BIG TURNS TO ACHIEVE SEPARATION. I HAVE QUESTIONED THE PLTS ON SEVERAL OCCASIONS AFTER OBSERVING THEM TURN DOWN J9 AS TO THEIR CLRNC AND HAVE FOUND THE PROB IS AS I HAVE STATED; THEY ARE NOT READING DOWN FAR ENOUGH ON THE PDC TO FIND THE AMENDMENT. MY SUPVR AT SLC HAS TURNED IN THIS PROB SEVERAL TIMES IN THE PAST WITH NO NOTICEABLE RESULTS. THIS IS A PROB FOR ANY ACFT WHICH DEPART SLC SBOUND AND RECEIVE PDC'S. IF NOT A DISASTER THIS IS DEFINITELY A SYS ERROR WAITING TO HAPPEN. I DON'T BELIEVE THIS IS A UCR AS IT IS NOT EQUIP OR PROCS. WHEN THIS HAPPENS IT IS PLTDEV.