A PLT RPTS A DISCREPANCY BETWEEN HIS AND ATC'S PRIVATE ARPT APCH CHART AND NOTES THAT THERE IS NO APPARENT METHOD TO VERIFY CHART CURRENCY OR ACCURACY.

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ON AN IFR FLT PLAN. I WAS INSTRUCTED BY CHICAGO APCH TO EXPECT THE VOR 36 APCH INTO LL10. ABOUT 3 MILES FROM THE JOT VOR; I WAS GIVEN THE FOLLOWING CLRNC; 'CROSS THE JOT VOR AT 3000 FT; CLRED FOR THE VOR 36 APCH INTO NAPER AERO (LL10). SINCE I WAS NOT PROVIDED VECTORS TO INTERCEPT THE FINAL APCH COURSE (TYPICALLY; THE CTLRS WILL DSND AN ACFT TO 2500 FT ON A SPECIFIC HDG AND INSTRUCT THE PLT TO INTERCEPT THE FINAL APCH COURSE; THAT THE ACFT IS X MILES FROM THE FINZR (FINAL APCH FIX) AND THAT THE ACFT IS CLRED FOR THE VOR 36 APCH); I ELECTED TO FLY THE PROC TURN TO LOSE 500 FT OF ALT AND ESTABLISH MYSELF ON THE FINAL APCH COURSE. NAPER AERO IS A PRIVATE FIELD AND THE APCH PLATE THAT I WAS GIVEN FOR THE FIELD SHOWS A RACE TRACK PROC TURN AT THE JOT VOR (THE JOT VOR IS ALSO THE IAF). AS I CROSSED THE JOT VOR; I PERFORMED A DIRECT ENTRY INTO THE PROC TURN AND ALIGNED MYSELF WITH THE FINAL APCH COURSE ON THE INBOUND LEG OF THE PROC TURN (024 DEG RADIAL FROM THE JOT VOR) WHILE DSNDING FROM 3000 FT TO 2500 FT. 2500 FT IS THE MINIMUM ALT FOR THE PROC TURN AND INTERMEDIATE APCH SEGMENT. AS I WAS COMPLETING THE PROC TURN; THE CTLR ASKED IF I WAS PERFORMING A PROC TURN. I STATED THAT I WAS PER MY APCH PLATE SINCE I WAS NOT GIVEN VECTORS TO THE FINAL APCH COURSE. THE CTLR THEN SAID THAT HE WAS NOT AWARE THAT THE APCH HAD A PROC TURN. I REPLIED THAT MY APCH PLATE SHOWED A RACE TRACK PROC TURN. HE THEN STATED THAT HIS PLATE DID NOT SHOW A PROC TURN. HE ALSO STATED THAT HIS PLATE STATED THAT PROC TURNS WERE NOT AUTHORIZED (WHICH IS AN ODD STATEMENT BECAUSE WHY WOULD AN APCH PLATE STATE THAT PROC TURNS ARE NOT AUTHORIZED IF THERE WERE NO PROC TURNS DEPICTED ON THE APCH PLATE). AT THIS POINT; THE CTLR CLRED ME TO CHANGE FREQ TO THE LOCAL UNICOM. SINCE I WAS STILL 10 MILES OUT FROM THE ARPT IN MARGINAL VMC; I ELECTED TO STAY ON THE APCH FREQ. AFTER ABOUT ONE-TWO MINUTES; THE CTLR CALLED TO SEE IF I WAS STILL ON FREQ. AFTER ESTABLISHING COMMUNICATION; HE STATED THAT; 'HIS PLATE ONLY SHOWED A TRANSITION FROM THE JOT VOR.' I WAS CONFUSED BY THIS AS THE JOT VOR IS THE IAF. I CONTINUED TO FLY MY APCH PER MY APCH PLATE. WHEN I CANCELED MY IFR FLT PLAN ABOUT 1 MILE FROM THE ARPT; I ASKED THE CTLR IF HE WOULD LIKE ME TO CONTACT HIM AND SEND HIM A COPY OF MY APCH PLATE TO DETERMINE WHOSE PLATE WAS MORE CURRENT. HE STATED THAT IT WAS NOT NECESSARY AND THAT HE WOULD USE HIS RESOURCES TO VERIFY THE PLATE. I BELIEVE THERE ARE TWO ISSUES THAT LED TO THIS EVENT. 1) THE CLEAR COMMUNICATION BETWEEN ATC AND THE PLT. I WAS UNDER THE EXPECTATION THAT SINCE I WAS NOT VECTORED TO THE FINAL APCH COURSE AND ONLY VECTORED TO THE IAF THAT AS PIC THE PROC TURN WAS MY DECISION BUT A PREFERRED ACTION BY THE FAA SINCE THE APCH PLATE HAS NO LIMITATIONS ON THE USE OF THE PROC TURN. I AM AWARE THAT WHEN VECTORED TO THE FINAL APCH COURSE; PROC TURNS ARE NOT AUTHORIZED UNLESS GRANTED BY ATC. I SHOULD HAVE CONFIRMED THAT ATC WANTED ME TO EXECUTE THE PROC TURN EVEN THOUGH I WAS ONLY CLRED TO THE IAF AND FOR THE VOR 36 APCH. 2) THE POTENTIAL THAT DIFFERENT APCH PLATES EXIST FOR A PRIVATE FIELD. AS A CORRECTIVE MEASURE; I IMMEDIATELY CONTACTED SEVERAL OTHER PLTS AT THE FIELD THAT REGULARLY USE THE INSTRUMENT APCH. TWO HAVE AN IDENTICAL APCH PLATE AS MINE. A THIRD PERSON STATED THAT HE HAD TWO VERSIONS; ONE WAS THE VOR 36 PLATE (SAME AS MINE) AND THE OTHER WAS A VOR/GPS 36 PLATE. HE WAS NOT SURE IF THERE WERE ANY DIFFERENCES OTHER THAN THE NAME. I PLAN TO REVIEW THESE APCH PLATES AT THE EARLIEST OPPORTUNITY. IN ADDITION; I PLAN TO CONTACT THE ARPT MANAGER TO DETERMINE IF MY APCH PLATE IS NOT THE MOST CURRENT AND TO INFORM THAT THERE ARE VARIOUS VERSIONS OF THE APCH PLATE IN CIRCULATION (OR THE ATC HAS A DIFFERENT VERSION). IN ADDITION; I BELIEVE THERE NEEDS TO BE A WAY TO IDENTIFY THE MOST CURRENT APCH PLATES FOR PRIVATE ARPTS SIMILAR TO HOW CURRENT PUBLIC ARPT APCH PLATES CAN BE VIEWED VIA THE INTERNET OR THROUGH A SUBSCRIPTION. I REGULARLY REVIEW AND USE THE MOST CURRENT NOS CHARTSON FLTS AND REVIEW ALL NOTAMS AND FDC NOTAMS. I HAVE NOT SEEN ANY NOTAMS RELATED TO THE LL10 VOR 36 APCH. TO MAKE SURE THAT I DID NOT MISS ANYTHING; I REVIEWED THE NOTAMS AND FDC NOTAMS AGAIN.