C182 PLT UNKNOWINGLY PENETRATES DC ADIZ WITHOUT CLRNC LNDG W00. ASKING ABOUT DEP PROCS FROM A LCL INSTRUCTOR; PLT IS ADVISED TO CONTACT PCT; WHO DIRECTS A RETURN LAND TO OBTAIN A CORRECT CLRNC WITH RELEASE.

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PVT PLT FROM LAFAYETTE; IN; FLYING TO WASHINGTON; DC; FOR BUSINESS. I CALLED TERRA HAUTE FSS FOR ADVISORIES AND ADDITIONAL INFO 5 DAYS PRIOR TO FLT. I WAS INFORMED TO STAY OUT OF THE 'NO FLY ZONE' AROUND WASHINGTON; DC. I REPEATEDLY REQUESTED INFO ABOUT SPECIAL PROCS FLYING INTO AND OUT OF W00. THE ADIZ ADVISORY WAS NOT GIVEN FROM TERRA HAUTE FSS. I FILED A VFR FLT PLAN LAF DIRECT W00 THE DAY OF THE FLT AND ALSO RECEIVED NO ADIZ ADVISORY; AGAIN TOLD TO STAY OUT OF THE 'NO FLY ZONE.' FLT TO W00 WAS WITHOUT INCIDENT. LEAVING W00 ON APR/MON/04; I CHKED WX; AND ASKED LCL INSTRUCTOR FOR DEP PROC. I WAS INFORMED TO CONTACT POTOMAC APCH ON 119.3. I TOOK OFF RWY 18; SQUAWKING 1200; CONTACTED POTOMAC APCH ON 119.3. POTOMAC APCH ADVISED US TO RETURN TO DEP ARPT AND CALL FSS. I FULLY COMPLIED WITH THE REQUEST. USING A LCL PHONE; I CALLED POTOMAC FSS AND LEARNED PROPER ADIZ PROCS. POSSIBLE ACTIONS THAT COULD HAVE AVOIDED VARIANCE TO ADIZ PROC: 1) PLT CALL IN FLT PLAN FROM LCL PHONE. MY CELL PHONE SENT ME TO TERRA HAUTE. 2) TERRA HAUTE FSS SHOULD UNDERSTAND ADIZ BETTER. 3) W00 HAVE INFO SITES FOR TRANSIENT PLTS.