NOTAM NOT ISSUED. PLT OBTAINS A FSS BRIEFING FOR THE FIRST LEG OF HIS TRIP; BUT NOT FOR THE SECOND. HE DOES CHK THE NOTAMS FOR THE ENTIRE TRIP; BUT THE NOTAMS DO NOT MENTION THAT HIS SECOND ARPT NOW HAS A TWR. THE TWR BRINGS THIS TO HIS ATTN AS HE OVERFLIES TO CHK TFC.

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THE DAY'S ITINERARY WAS TO FLY FROM PRC TO SDL TO CONDUCT SOME BUSINESS AT THE LCL FSDO; THEN DOWN TO CHANDLER TO DO SOME BUSINESS AT THE FBO FROM WHOM I HAD BEEN RENTING AN AIRPLANE FOR THE LAST FEW MONTHS; AND THEN ONWARDS TO PHX. THAT MORNING I CALLED PRESCOTT FSS AND GOT A STANDARD BRIEFING FOR THE FLT FROM PRC TO SDL; AND FILED A VFR FLT PLAN. THE WX WAS FORECAST AND RPTED TO BE GOOD; AND THERE WERE NO UNUSUAL UNPUBLISHED NOTAMS. I ALSO CHKED MY COPY OF THE LATEST NOTAMS TO SEE IF THERE WOULD BE ANYTHING OF INTEREST -- THERE WERE NONE. THE FLT TO SDL WAS UNEVENTFUL. I THEN FLEW TO CHANDLER VIA THE BILTMORE TRANSITION. AFTER CLRING CLASS B; PHX TRACON CLRED ME FOR A FREQ CHANGE. I HAD THE MOST CURRENT VFR TERMINAL CHART AND COMMERCIAL PLATE AND QUICKLY VERIFIED FROM THEM THAT THE CTAF WAS UNICOM ON 123.0. I DIALED THAT UP ABOUT 7 MI FROM CHANDLER AND ANNOUNCED MY INTENTIONS. MY RADIO PROCS WERE SOMEWHAT SLOPPY FOR AN UNCTLED FIELD AND I SHOULD HAVE REQUESTED AN ADVISORY. I FLEW ABOVE THE PATTERN TO TAKE A LOOK AT THE WINDSOCK. I THEN FURTHER ANNOUNCED MY INTENTIONS TO ENTER THE PATTERN. IT WAS AFTER THIS CALL THAT SOMEBODY SAID ON THE RADIO 'ACFT OVERHEAD; CALL CHANDLER TWR ON 120.8!' UGGGHH! AS I SWITCHED FREQ TO TWR I IMMEDIATELY HEARD TWR ANNOUNCING 'YEAH; I GOT SOME AIRPLANE CIRCLING OVERHEAD.' I IMMEDIATELY GOT ON THE RADIO AND TOLD HIM THAT THAT WAS ME AND THAT I DID NOT KNOW THEY HAD A TWR. THEY CLRED ME FOR THE PATTERN AND THEN TO LAND. NOTHING ELSE WAS MENTIONED ABOUT THIS. ON DOING BUSINESS WITH THE FBO I TOLD THEM ABOUT THE INCIDENT. THEY TOLD ME NOT TO WORRY; AS IT WAS ONE OF THOSE PORT-A-TWRS WHICH HAD BEEN IN OP FOR THE LAST 1 1/2 WKS FROM TIME-TO-TIME. I THEN CALLED FLT SVC FOR AN UPDATE OF THE NOTAMS. SURE ENOUGH; CHANDLER HAD LISTED A 'LCL CTL FREQ;' BUT NO CLASS D AIRSPACE. FURTHERMORE; ON DEP; I WAS NOT EVEN 200 FT ABOVE THE GND ON THE UPWIND WHEN CHANDLER TWR CLRED ME FOR A FREQ CHANGE? WHAT SHOULD I MAKE OF THIS? IS THIS AN ISSUE WHICH I NEED TO WORRY ABOUT? I ALWAYS LIKE TO PLAY IN STRICT COMPLIANCE WITH THE RULES. IN THIS CASE; I'VE LEARNED TO CALL FSS AND AT LEAST CHK THE NOTAMS; EVEN FOR A VERY SHORT FLT TO A VERY FAMILIAR ARPT.