ZTL CTLRS EXPRESSED CONCERN REGARDING A COMPANY POLICY THAT CAUSES UNEXPECTED SPD REDUCTIONS FOR ACFT LNDG ATL.

Narrative

FOR THE PAST COUPLE OF MONTHS ACR X HAS BEEN SELF-METERING INTO ATL WITHOUT ADVISING ATC. ACR X DISPATCHERS ARE TELLING ACR X ACFT TO CROSS CERTAIN FIXES AT CERTAIN TIMES; THE ACFT ARE THEN ADJUSTING THEIR SPDS WITHOUT ADVISING ATC. THIS CAUSES A HUGE PROB WHEN WE ARE TRYING TO SPACE ACFT INTO ATL BECAUSE AN ACR X ACFT SLOWS TO 250 KTS 150 MILES OUT OF ATL. WE HAVE HAD SEVERAL INSTANCES THAT OTHER ACFT HAVE HAD AN OVERTAKE AND ALMOST A LOSS OF SEPARATION BECAUSE THE ACR X JET WAS DOING 300 KTS AND THEN SLOWED WITHOUT LETTING US KNOW. I HAVE ADVISED OUR MANAGEMENT AND TMU AND NO ONE SEEMS TO CARE. ACR X DOES NOT HAVE THE BIG PICTURE GOING INTO ATL; ACR X IS NOT SEEING THE OTHER AIRLINES ALSO GOING OVER THAT FIX INTO ATL. THIS IS A SAFETY ISSUE.CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR CONFIRMED THAT THE SUBJECT PROB WAS STILL GOING ON WITH ACFT SLOWING AS PER COMPANY REQUEST WITHOUT FIRST NOTIFYING ATC. THE RPTR DID NOT KNOW OF ANY COORDINATION THAT WAS TAKING PLACE BETWEEN THE COMPANY AND THE FAA AT ANY LEVEL REGARDING THIS PROC.