A BEECH BARON PLT WAS INFORMED THAT THE RESTR AREA P40 HAD BEEN VIOLATED TWICE NEAR FDK.

Narrative

I HAD JUST LANDED AT FREDERICK ARPT TO DROP OFF 2 PAX ON THE RETURN LEG OF A LATE NIGHT FLT. THIS FLT WAS CONDUCTED IFR DUE TO WX ACROSS THE RTE AND ITS LATE HR. AFTER THE PAX DISEMBARKED; I HAD 1 SHORT LEG TO FLY BACK TO MY HOME FIELD AT HAGERSTOWN. AT THIS TIME; I DECIDED TO TRY AND DO THIS SHORT TRIP VFR; AS ON THE APCH TO FDK THE CEILING WAS 3500 FT MSL. IN ADDITION TO THIS; I WAS ABLE TO PICK UP THE HGR AWOS WHICH ALSO STATED THAT THE CEILING THERE WAS 3000 FT AND VISIBILITIES WERE 5 MI IN MIST. AT FDK; HOWEVER; THE VISIBILITIES SEEM TO BE SOMEWHAT LESS; AND SO I DECIDED TO FLY NE UPON DEPARTING FDK SO THAT I COULD INTERCEPT THE 323 DEG RADIAL OF WESTMINSTER/EMI AND THEN ON TO HAIGS (IAF) FOR THE ILS AT HGR. THIS ACFT IS NOT EQUIPPED WITH A GPS; AND SO I WAS FLYING A NORTHWARD COURSE IN ORDER TO INTERCEPT A RADIAL FROM EMI WHICH I COULD FLY TO HAIGS. AFTER A PERIOD OF TIME; I CALCULATED THAT I SHOULD HAVE CROSSED THE RADIAL GIVEN MY AIRSPD. FURTHERMORE; I FELT THAT A LIGHT FOG WAS BEGINNING TO DEVELOP MAKING GND REFING MORE DIFFICULT. IN SHORT; I FELT LOST. SO I DIALED IN THE FDK VOR AND REVERSED COURSE. UPON SIGHTING THE FIELD (FDK) I CIRCLED AND CALLED UP DULLES APCH FOR AN IFR CLRNC TO HGR. IT WAS AT THIS TIME THAT THE CTLR INFORMED ME THAT I HAD TWICE VIOLATED P40 ON MY OUTBOUND AND INBOUND LEGS! CONTRIBUTING FACTORS FOR THIS EVENT WERE PLT FATIGUE; MVFR CONDITIONS; LESS THAN 70 HRS IN TYPE. THIS SIT COULD HAVE BEEN AVOIDED HAD I FILED FOR AN IFR CLRNC FROM THE BEGINNING AND FLOWN A MORE STANDARD PROC. THERE WAS A FALSE SENSE OF SECURITY DUE TO THE FACT THAT THE DEST ARPT WAS ONLY 10 MINS AWAY.