HELI PLT LANDS AT CPS WITHOUT CONTACTING TOWER DUE TO USE OF OUT OF DATE COM FREQUENCIES.

Narrative

I WAS PREPARING TO DEPART FOR ST LOUIS DOWNTOWN (CPS) FOR REFUEL (APPROX 6 MI) AND WAS UNABLE TO PICK UP ATIS OR TWR ON THE PAD. I RECHKED BOTH THE FACILITY DIRECTORY AND THE SECTIONAL; BOTH OF WHICH WERE CURRENT; AND CONFIRMED ALL FREQS MATCHED. I RE-TRIED ALL FREQS IN THE AIR WITH NO CONTACT. I MADE CALLS ON PUBLISHED CTAF; THEN PROCEEDED INBOUND FROM THE W AND ENTERED A MODIFIED R BASE FOR TXWY A; LNDG TO THE W WITHOUT INCIDENT. WHEN I ENTERED THE FBO; MY CREW INFORMED ME THAT ALL FREQS HAD CHANGED. I THEN CALLED THE TWR TO APOLOGIZE FOR MY IGNORANCE AND ASK IF THERE HAD BEEN A NOTAM PUBLISHED ADVISING THE CHANGE. TWR OPERATOR DID NOT ACT CONCERNED OR ASK ME MY NAME OR TAIL NUMBER. I THEN CONFIRMED WITH THE TWR OPERATOR THAT I HAD ALL THE NEW FREQS WRITTEN CORRECTLY. I DEPARTED 15 MINS LATER WITH NO ISSUES. AN ITEM OF NOTE: THE ST LOUIS SECTIONAL IS DATED AFTER THE NOTAM ANNOUNCING THE FREQS CHANGES FOR ST LOUIS DOWNTOWN AND I WRONGLY ASSUMED THAT THE NEW FREQS HAD BEEN INCORPORATED INTO THE NEW SECTIONAL.