B737 FLC EXECUTES APCH PROC WITHOUT CURRENT CHARTS.

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OUR AIRLINE WAS LATE DISTRIBUTING COMMERCIAL CHARTS REVISION #18. IT WAS DISTRIBUTED DURING THE DAY TUESDAY. WE DEPARTED SEATTLE AT XA20 TUESDAY. THE PERSON RESPONSIBLE FOR THE DISTRIBUTION WAS N DAYS OFF. WE DISCOVERED ENRTE FROM PHX TO SEA THIS MORNING THAT OUR APCH PLATES WERE NOT CURRENT AND THAT A LARGE REVISION WITH MANY CHANGES WAS IN EFFECT TODAY FOR SEATAC. WE VERIFIED WITH ANOTHER COMPANY ACFT THE FMC DATA WAS INDEED CORRECT; AND THAT WE HAD THE OLD APCH CHARTS. WE TRIED TO GET INFO FROM COMPANY DISPATCH AND WERE TOLD TO 'CHK OUR REVISIONS' UPON RETURNING TO SEATTLE AND REQUEST VECTORS. WE ADVISED ZSE OF OUR SIT AND REQUESTED VECTORS AND HARD ALTS TO VFR AT SEATAC. WE ALSO DISCUSSED OUR PLAN TO REQUEST TRACKING THE LOC WITH HARD ALTS TO VFR IF THEY FORGOT AND CONTINUED TO SEA BECAUSE THE WX WAS GOOD WITH 2400 FT BROKEN AND VISIBILITY 10+ MI. ALL WENT WELL UNTIL THE FINAL CTLR GAVE US THE FINAL VECTOR FOR THE LOC AND CLRED US FOR THE ILS. THE FREQ WAS BUSY; ACFT Y WAS ASKING 'WHERE IS THAT FIX?' OBVIOUSLY WITHOUT THE NEW CHARTS; AND THE FLT ATTENDANT WAS RINGING THE CALL BUTTON. THIS ALL HAPPENED ABOUT 4500 FT AND 14 DME. MY FO ANSWERED THE FLT ATTENDANT'S CALL AND WE HAD WHAT THEY THOUGHT WAS A HEART ATTACK IN PROGRESS -- (IT WAS). WE ELECTED TO CONTINUE THE APCH KNOWING THE PROPER NUMBERS AND FIXES. KEEP IT SIMPLE! WE BROKE OUT VFR ABOUT 3000 FT AND LANDED SAFELY THEN EXPEDITED AS MUCH AS POSSIBLE TO THE GATE FOR MEDICAL CARE. NEEDLESS TO SAY; I VISITED OUR BASE CHIEF PLT AND DISPATCH AND DISCUSSED THE LACK OF REVISIONS AND SUPPORT!