CONDUCTING EZF GPS RWY 24 APCHS; PA28 IS INTERCEPTED BY CUSTOMS AND ORDERED TO LAND DUE TO DC ADIZ VIOLATION.

Narrative

I HAD NOT FLOWN MY PA28 FOR OVER A MONTH. I WAS AT THE SERVICE CTR WITH MY COMPANY'S G-IV AND G-V. UPON MY RETURN TO THE WASHINGTON; DC AREA; OPPORTUNITY WAS PRESENTED TO FLY MY CHEROKEE. I DEP KEZF APPROX XA10 WITH THE INTENTION OF FLYING A LOCAL VFR FLT. I HEADED SW APPROX 15 MILES AND CONDUCTED VARIOUS TRAINING MANEUVERS. I THEN RETURNED TO KEZF OVER FLYING THE ARPT AT AN ALT OF 2000 FT. CUSTOMARILY; I WILL CONDUCT A GPS APCH RWY 24; FOR THE INTENTION OF MAINTAINING PROFICIENCY WITH INSTRUMENT APCH PROCS AND OP OF THE GARMIN 430 GPS RECEIVER. I WAS AWARE OF THE 30 MILE WASHINGTON ADIZ; BUT THOUGHT THAT THE ADIZ DID NOT EXTEND FAR ENOUGH S THAT IT WOULD CONFLICT WITH THE GPS RWY 24 APCH. ADDITIONALLY; I MISTAKENLY ASSUMED THAT THE ADIZ WOULD CONFORM TO THE 30 MILE CLASS B OUTER RING OF DULLES/WASHINGTON. FURTHERMORE; I NEVER CONTACTED FLT SERVICE; WHICH IS NORMALLY MY PRACTICE; IN ORDER TO DISCUSS THE AREA NOTAMS. THE BASIS FOR NOT CONTACTING FLT SERVICE WAS THAT MY PRIMARY MISSION INTENTION WAS TO FLY WITHIN THE IMMEDIATE ARPT AREA; GET THE OIL TEMP UP ON THE ENGINE AND BOIL OFF THE MOISTURE AND LAND. HOWEVER; AS THE FLT PROGRESSED; I DECIDED TO DO A LITTLE TRAINING. I ATTEMPTED TO CONTACT POTOMAC AND QUANTICO APCH WITHOUT SUCCESS ON BOTH MY #1 AND #2 RECEIVER. IN MY EXPERIENCE THIS IS NOT UNUSUAL. GENERALLY IT IS MORE EFFECTIVE TO FLY TO THE RIC AREA AND ATTEMPT TO GET INTO THE SYSTEM. I THEN TUNED TO MY #1 RECEIVER TO 122.8 (SHANNON CTAF) AND MY #2 RECEIVER TO 121.5. I FLEW DIRECT FROM SHANNON ARPT TO THE SHANNON GPS DURWO IAF; REMAINING AT 2000 FT. UPON CROSSING DURWO; I EXECUTED A COURSE REVERSAL TO THE S AND RE-INTERCEPTED DURWO. AT ALL TIMES; I WAS IN VFR CONDITIONS; AT AN ALT OF 2000 FT AND ALWAYS OVER THE RIVER. I CONTINUED ON THE INBOUND COURSE TO SHANNON RWY 24 REMAINING AT 2000 FT. UPON REACHING RWY 24 MISSED APCH POINT; I EXECUTED A MISSED APCH TO THE L; RETURNING TO DURWO. I THEN EXECUTED ANOTHER COURSE REVERSAL TO THE S AND RE-INTERCEPTED DURWO. AFTER CROSSING DURWO; I DESCENDED OUT OF 2000 FT FOR 1700 FT; INBOUND TO THE KUTPY GPS RWY 24 FIX. APPROX 3 MILES FROM KUTPY; I WAS INTERCEPTED BY A CUSTOMS HELI AND ORDERED TO LAND. AFTER LNDG; I WAS INFORMED THAT I HAD VIOLATED; BY A MILE OR MORE THE WASHINGTON ADIZ. IT COULD PROBABLY BE ARGUED WHEATHER OR NOT I ACTUALLY PENETRATED THE ADIZ. IT DOESN'T MATTER; I WAS TOO CLOSE. PLTS DON'T LIKE TO MAKE MISTAKES. I'VE BEEN FLYING FOR FORTY-FIVE YEARS; ALL OVER THE WORLD; AND NEVER HAD AN INCIDENT OR VIOLATION. I GOT COMPLACENT; I ASSUMED; WHEN YOU SHOULD ASSUME NOTHING IN THIS BUSINESS.