A CHRISTEN EAGLE PLT ON A VFR FLT PLAN FROM HSE TO MTN WITHIN THE DC ADIZ POSSIBLY PENETRATED CLASS B AIRSPACE WHILE ON VECTORS.

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ON SATURDAY; DEPARTED MARTIN STATE ARPT (MTN) FROM WITHIN THE DC ADIZ. DEST WAS HSE WITH A STOPOVER FOR FUEL AT MQI; DARE COUNTY; APPROX 250 MI TO THE S. GIVEN THE HAZE FACTOR; I OPTED TO FLY N UNTIL OUTSIDE THE ADIZ; CLB TO 10500 FT; ACTIVATE THE ADIZ FLT PLAN AND FLY S ABOVE THE CLASS B AIRSPACE. ACTUAL RTE OF FLT BEING MTN W42 ANP COLIN MI. GIVEN THE PERFORMANCE CHARACTERISTIC OF THIS PLANE; THE PROCESS WORKED WITHOUT INCIDENT. AFTER DEPARTING THE ADIZ TO THE S; I THEN REQUESTED AND GOT FLT FOLLOWING TO THE DARE (MQI). ON SUNDAY; I INITIATED THE RETURN TRIP. AGAIN HSE TO MQI FOR REFUELING AND THEN FROM MQI TO MTN. I OPTED TO FOLLOW THE SAME RTE USED IN COMING DOWN. HAZE WAS FORECAST FOR BALTIMORE; SO I OPTED TO FLY OVER THE ADIZ; GO SLIGHTLY N THEN DSND; COME BACK UNDER AND LAND. GIVEN HE PERFORMANCE CHARACTERISTIC OF THE PLANE; THIS RTE AND THE RAPID DSCNT LOOKED TO BE NO PROB. A VFR ADIZ FLT PLAN WAS FILED WITH MQI AS THE DEP POINT AND MTN AS THE DEST. WHILE I MENTIONED THAT I WOULD BE FLYING N TO W42 JUST PAST THE NORTHERN EDGE OF THE ADIZ; THE BRIEFER NOTED THAT ALL THEY NEEDED WAS THE ADIZ ENTRY POINT AND DEST. (I FILED FOR WHINO AS THE ENTRY.) I DEPARTED MQI AND AFTER DEP CONTACTED ZDC FOR FLT FOLLOWING AND CLBED TO 10500 FT. I WAS HANDED TO VARIOUS TRACONS AND CTR SECTORS AS NEEDED. APPROX 10 MI S OF COLIN; I ASKED CTR IF THEY WOULD BE ABLE TO ARRANGE A HDOF TO POTOMAC TRACON AS I HAD AN ADIZ FLT PLAN ON FILE. I HEARD BACK THAT POTOMAC SAID THAT I COULD NOT FLY MY INTENDED COURSE. I WAS TOLD TO FLY DIRECT TO SOME INTXNS; BUT I DID NOT KNOW WHERE THEY WERE LOCATED. IT WAS THEN SUGGESTED I FLY DIRECT PATUXENT AND THEN DIRECT MTN. I WAS SOMEWHAT SURPRISED AS I WAS NOT AWARE THAT APCH HAD CTL ON AIRSPACE ABOVE 10000 FT (TP OF THE CLASS B); BUT I FOLLOWED THEIR DIRECTION. I WAS TOLD TO BEGIN MY DSCNT; BUT HESITATED AS THAT WOULD HAVE HAD ME ENTERING CLASS B AIRSPACE. BEFORE I COULD ASK; I WAS TOLD TO SWITCH TO POTOMAC APCH AND A DIFFERENT CTLR CAME ON AND INFORMED ME THAT I WAS NOT CLR TO ENTER CLASS B AIRSPACE AND IF I HAD WANTED TO I HAD TO HAVE REQUESTED A CLRNC FOR CLASS B WHEN I FILED MY FLT PLAN. I SAID I HAD NO DESIRE TO ENTER CLASS B; I WAS GOING TO FLY OVER AND DROP DOWN AND COME UNDER THE EDGE. IT WAS THEN MADE ABUNDANTLY CLR TO ME THAT A VFR ADIZ FLT OVERLYING THE CLASS B AIRSPACE WAS NOT ALLOWED. A NEW CTLR THEN CAME ON AND GAVE ME A SUGGESTED HDG TO SKIRT THE EDGE OF THE CLASS B AIRSPACE AND DSND TO COME BELOW THE ADIZ ON THE E SIDE; FLY ACROSS THE BAY AND LAND AT MARTIN. I FOLLOWED THE VECTORS AS WELL AS I COULD AND LANDED AT MARTIN WITHOUT INCIDENT. 1) WHILE I FOLLOWED ALL VECTORS AND BELIEVE BASED ON THE GPS MAP I WAS CLR OF THE CLASS B AIRSPACE; WITH THE CHANGES IN ROUTING AND BEING DEPENDENT ON ROUTING GIVEN BY CTL; IT IS POSSIBLE I CLIPPED A BOUNDARY. I AM ALSO CONCERNED THAT ACCORDING TO THE ONE CTLR; I WAS NOT SUPPOSED TO OVERFLY THE CLASS B AIRSPACE. 2) ON LNDG; THE ALTIMETER SHOWED A 200 FT DISCREPANCY. THERE IS NO WAY TO ADJUST THE ALTIMETER INFLT IF FLYING SOLO. THE INST PANEL IS AHEAD OF THE FRONT SEAT AND UNREACHABLE BY THE PLT. A COMMENT IS THAT THE OPERATING PROCS FOR VFR ACFT OVERFLYING THE CLASS B AIRSPACE BUT WITHIN THE ADIZ DO NOT SEEM WELL DEFINED. WHAT WAS ACCEPTABLE ON SATURDAY BECAME UNACCEPTABLE ON SUNDAY. A SECOND COMMENT IS THAT THE CTLRS ASSUMED I HAD ACCESS TO IFR ROUTINGS AND INFO; BUT I WAS VFR. ADMITTEDLY; HAVING A PLANE THAT CAN EASILY ASCEND TO 10500 FT AND DSND DOWN QUICKLY MAY BE A CASE THAT HAS FALLEN IN THE CRACKS WITH THE PROCS; BUT IF THEY DO NOT WANT VFR TFC OVER THE CLASS B AIRSPACE WITHIN THE ADIZ; THEY SHOULD SAY SO.