B747-200 FLT CREW USES THE WRONG TRACK MESSAGE FOR THE NAT TRACK CLRNC. THEY PROGRAM THE ACFT SYS AND FLY THE WRONG POS. ATC REDIRECTS THE FLT CREW TO THE PROPER NAT TRACK.

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NOT REALIZING THE OCEANIC TRACK MESSAGE WAS EXPIRED; I ACCEPTED AN OCEANIC CLRNC USING AN OCEANIC TRACK MESSAGE THAT WAS ISSUED THE DAY BEFORE. AFTER MAKING A STANDARD POS RPT AT THE COAST OUT FIX; SHANWICK ATC CONTACTED ME AND REQUESTED THAT I VERIFY THE POS AFTER THE COAST OUT FIX. I VERIFIED WHAT I HAD PROGRAMMED IN THE NAV UNITS AND WAS INFORMED BY SHANWICK ATC THE TRACK ROUTING I WAS USING WAS NOT CORRECT SHANWICK ATC THEN CLRED ME TO THE CORRECT POS FOLLOWING THE COAST OUT FIX AND SUPPLIED THE CORRECT WAYPOINTS FOR THE OCEANIC TRACK THAT I HAD BEEN ASSIGNED. THE FLT PROCEEDED NORMALLY FROM THAT POINT. THIS PROB WAS CAUSED BY MY FAILURE TO PROPERLY VERIFY THE DATE AND VALID TIMES OF THE OCEANIC TRACK MESSAGE I USED. I DID NOT REALIZE THE PORTION OF THE OCEANIC TRACK MESSAGE THAT APPLIED TO OUR DIRECTION OF FLT WAS OUT OF DATE DUE TO THE FACT THAT THE PART OF THE OCEANIC TRACK MESSAGE WITH THE TRACK MESSAGE IDENT NUMBER WAS FOR THE CORRECT DATE. ADDITIONALLY; THE COMPANY FLT FOLLOWING DEPT ALSO FAILED TO VERIFY THE DATE AND VALID TIMES OF THE OCEANIC TRACK MESSAGE AND SUPPLIED ME A PARTIALLY OUT-OF-DATE OCEANIC TRACK MESSAGE AND A FLT PLAN BASED ON THIS OUT-OF-DATE INFO. I DO NOT BELIEVE THIS WAS CAUSED BY A SYSTEMIC PROB BUT IT HIGHLIGHTS THE NEED FOR THE COMPANY FLT FOLLOWING DEPT AND THE FLT CREW TO BE MORE VIGILANT TO ENSURE THAT THE CREW IS OPERATING WITH CURRENT AND ACCURATE INFO. TO PREVENT A RECURRENCE THE OBSOLETE MNPS TRACK SYS SHOULD BE REPLACED BY STANDARD AIRWAYS; AS THE PACIFIC OCEANIC AREA HAVE; THAT WORK MUCH MORE EFFICIENTLY.