ENTERED ARSA WITHOUT CLRNC.

Narrative

I WAS FLYING MY SMA BIPLANE HOME AFTER AN AIR SHOW IN KS. WE WERE GOING TO SPEND NIGHT IN OMA. I WAS IN A HURRY TO LAND BEFORE SUNSET BECAUSE OF NO LIGHTS ON ACFT. I CONTACTED OMA TWR ABOUT 6 MI OUT ON MY HANDHELD. NO POINT IN CALLED APCH; MY HANDHELD ONLY HAS ABOUT 5-6 MI RANGE BECAUSE OF UNSHIELDED IGNITION SYS. I WAS AT 3000' MSL. TWR SAID TO ENTER LEFT BASE FOR RWY 35. I DID AND WAS CLRED TO LAND. TWR ADVISED ME TO CALL THEM ON PHONE AFTER LNDG. HE ASKED IF I WAS FAMILIAR WITH ARSA'S. HE ADVISED I HAD VIOLATED THAT AIRSPACE AT 3000' BY NOT CALLING APCH PRIOR TO ENTRY. HE ADVISED I READ THE AIM STARTING ON PAGE 100. I DID; HE WAS RIGHT. THE REGS MUST HAVE CHANGED. ALSO MY MAP WAS A FEW YRS OLD. IT DID NOT SHOW THE ARSA. I FLY COMMERCIALLY FOR A MAJOR CARRIER. WHEN YOU ARE IFR IN AND OUT OF ARPTS ALL THE TIME A PERSON FORGETS ABOUT VFR PROCS. I DID NOT KNOW THE RULES PERTAINING TO ARSA'S HAD CHANGED. I KNOW ALL ABOUT TCA'S AND THE EMPHASIS PLACED ON THAT BECAUSE OF WHAT WE READ IN AOPA PLT; ETC. I DIDN'T KNOW WE HAD TO CALL PRIOR TO ENTERING AN ARSA. NEXT TIME I WILL ALSO MAKE SURE MY MAPS ARE CURRENT.