ZSE CTLR CONCERNED WITH THE OLYMPIA STAR PROCS AND PLT INTERP OR QUESTIONS THAT HE RECEIVES DAILY.

Narrative

THE B734 AND THE FK28 WERE BEING METERED TO SEATTLE WITH 6 TO 8 MIN DELAY'S. THE B734 WAS AT 160 S OF OLM. THE FK28 WAS SE OF OLM AT 170 ON A DELAY VECTOR. THE FK28 WAS CLRED DIRECT OLM; THEN THE OLM 2 ARR TO SEA. ONE MIN LATER; IT WAS DETERMINED THAT THE FK28 NEEDED AN ADDITIONAL DELAY. HE WAS THEN GIVEN A 280 DEG VECTOR; SHORTLY AFTER HE LEFT 170 FOR 160. A LOSS OF SEPARATION OCCURRED 2 MI S OF OLM. THE PLT INDICATED THAT WHEN HE WAS CLRED DIRECT OLM; HE WAS ALSO CLRED TO 'DSCND VIA THE OLM ARR.' BUT THE PROB IS THAT THE ARR HAS A NOTE 'MAINTAIN LAST ASSIGNED ALT UNTIL CLRED TO DSCND VIA THE OLM STAR.' THIS HAS BEEN AN ONGOING PROB WITH THIS STAR; WITH IT'S PROFILE DSCNT. A LOT OF TIMES; THE PLT CONFUSES DSCND VIA'- FOR CLRED FOR THE OLM ARR. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: CTLR'S PRINCIPLE CONCERN IS THAT THE STAR HAS NOT REDUCED FREQ CONGESTION. IT HAS REDUCED CLRNC PHRASEOLOGY. BUT WITH THE MANY OBSERVED; INCORRECT PLT COMPLIANCE ACTIONS; CTLRS HAVE BEEN REQUIRED TO ENGAGE IN ADDITIONAL COM'S TO CLARIFY THE STAR'S INTENT. ANOTHER COMPLICATION WITH THE STAR IS THAT TURBOPROP TFC UTILIZED THE SAME RTE STRUCTURE; BUT AT A LOWER ALT. WHEN ACR'S ARE DELAYED VECTORED OFF;THEN BACK ONTO THE STAR RTE; THE CTLR FREQUENTLY OBSERVES DSCNT FROM THE ASSIGNED ALT; THE PLT THINKING THAT CLRNC BACK ONTO THE STAR IN ALSO A 'DSCND VIA' CLRNC WHEN NO SUCH CLRNC HAS BEEN ISSUED. THE CTLR HAD NO SPECIFIC SUGGESTION FOR CHANGE OR CLARIFICATION OF THE STAR AT THIS TIME; BUT WAS DEVELOPING AN EDITORIAL AMENDMENT SUGGESTION SOON.