PA44 PLT TRAINING WITH A SAFETY PLT ARE DIRECTED TO LAND AT OKV BY PCT TO BE INFORMED OF DC ADIZ VIOLATION AFTER CONDUCTING PRACTICE ILS APCHS.

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I AND A SAFETY PLT DEPARTED JYO TO DO PRACTICE ILS'S AT OKV. WE FOLLOWED ADIZ PROC TO DEPART JYO BY CONTACTING PCT APCH AND OBTAINING OUR DISCRETE VFR XPONDER CODE IN ORDER TO TAKE OFF AND FLY W THROUGH THE ADIZ TOWARDS OKV (OKV IS WELL OUT OF THE ADIZ). AFTER TAKEOFF; WE FOLLOWED ATC'S INSTRUCTIONS; THEN ATC CONFIRMED WE HAD LEFT THE ADIZ AND TOLD US 'FREQUENCY CHANGE APPROVED.' WE THEN ENTERED OKV'S UNICOM IN ORDER TO GIVE TFC ADVISORIES AS WE DID OUR PRACTICE ILS'S. MY SAFETY PLT GAVE ME VECTORS IN ORDER TO JOIN THE LOCALIZER OUTBOUND TO DO A PROC TURN TO CLADD INTXN; WHICH I DID BY PERFORMING A TEARDROP ENTRY. MY SAFETY PLT HAD GIVEN ME AN APCH BRIEFING OF THE ILS 32 PLATE; THEN HANDED ME THE PLATE; AS WE WORK AS A 'CREW.' AFTER PERFORMING THE PROC TURN AND ABOUT HALFWAY TO THE DA; UNICOM CALLED TO ASK US IF WE HAD BEEN TO UPPERVILLE (A PRIVATE ARPT). WE SAID WE HAD BEEN IN THE VICINITY; BUT NOT AT THE ARPT. AT DA WE DID A MISSED APCH TO COME BACK AND DO A SECOND PROC TURN TO A SECOND ILS. SHORTLY AFTER LEAVING CLADD INBOUND; UNICOM CALLED AGAIN; CONFIRMED OUR TAIL NUMBER; AND SAID WE HAD TO LAND TO MAKE A LAND LINE CALL. WE LANDED AS SOON AS WE COULD AND WERE TOLD BY THE UNICOM OPERATOR THAT WE WERE TO CALL PCT TRACON. I SPOKE TO A SUPVR. HE SAID SOMEONE FROM THE FAA WOULD BE CALLING ME. MY SAFETY PLT SAID THAT THE SUPVR THOUGHT WE HAD ENTERED THE ADIZ. WE FLEW BACK TO JYO PER ADIZ PROCS WITHOUT INCIDENT. WHEN I ANALYZED THE SIT; I FOUND THAT WE HAD PROBABLY ENTERED THE ADIZ BY HALF TO 1 MILE WHILE PERFORMING THE COURSE REVERSAL DURING THE PROC TURN. I GUESS THAT TURNING TO THE PARALLEL ENTRY HDG; THEN DOING A STANDARD RATE TURN INBOUND ALL CONTRIBUTED TO GOING BEYOND 5 NM (UPPERVILLE ARPT IS ABOUT HALF TO 1 MILE INSIDE THE ADIZ). CONTRIBUTING FACTORS WERE LACK OF PICTORIAL DEPICTION OF HOW OKV ILS APCH/INTXN LOOK IN PROXIMITY TO CLASS B/ADIZ BOUNDARY. WE HAD VFR TERMINAL CHARTS ON BOARD; BUT WE HADN'T MEASURED THE NM'S FOR THE PROC TURN OUTBOUND. ANOTHER CONTRIBUTING FACTOR IS THAT I WAS NOT IN THE MINDSET OF ALL THE RAMIFICATIONS OF FLYING NEAR THE ADIZ -- THIS WAS THE FIRST TIME I'D FLOWN SINCE THE ADIZ WAS CREATED HERE. I HAD DONE THE OKV ILS MANY TIMES BEFORE THE ADIZ; AND ALTHOUGH THE PROC TURN CAN TAKE YOU TO THE CLASS B BOUNDARY; IT WAS NEVER A FACTOR; SINCE THE CLASS B FLOOR IS 4500 FT IN THAT AREA; AND THE PROC TURN WAS DONE WELL BELOW THAT ALT. SOLUTION: IF FLYING ANYWHERE NEAR THE ADIZ BOUNDARIES; MONITOR ON #2 VOR ON ARMEL VOR (WHICH; IN THAT AREA (WESTERN) DEFINES THE CLASS B BOUNDARY); AT 20 DME; WHICH WILL DEFINE THE ADIZ AS WELL. ALSO; PRE-PLANNING WOULD HAVE HELPED (IE MEASURING PRECISELY THE DISTANCES NEEDED TO DO THE PROC TURN AT 'X' GND SPEED) SUPPLEMENTAL INFO FROM ACN 576168: THE ONLY CORRECTIVE ACTION TO AVOID THIS SIT IS BETTER FLT PLANNING. WITH AIRSPACE CHANGING DAILY IT'S JUST NOT POSSIBLE TO SIMPLY GO OUT AND DO SOME APCHS ANYMORE. EVERY STEP OF THE WAY HAS TO BE PREPLANNED.