A BE200 PLT LANDED IN FOG AT JWN AND EXITED THE DEP END OF THE RWY STRIKING A LOC ANTENNA BUT CAUSING VERY LITTLE DAMAGE.

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EVERYWHERE ELSE WAS VFR. JWN HAD GND FOG; AWOS RPTED 1/4 TO 1/2 MI VISIBILITY; THE GND FOG WAS 50 TO 100 FT THICK. I MADE 3 PASSES TO NO AVAIL. ON THE FOURTH AND FINAL ATTEMPT I SAW THE APCH END OF RWY 20 FROM N OF THE CUMBERLAND RIVER WHILE ON THE VISUAL APCH. I COULD SEE ALMOST HALFWAY DOWN THE RWY. I CONTINUED MY VISUAL APCH BUT MISJUDGED MY POSITION OVER THE RWY AND TOUCHED DOWN ON THE LAST THIRD OF THE RWY. I EXITED THE RWY AND SLID THROUGH THE GRASS STRIKING TWO ANTENNAE USED FOR THE ILS LOCALIZER. I WAS IN NO HURRY. I NEVER MAKE MORE THAN 3 APCHS. I WAS TOO RELAXED SHOOTING THIS VISUAL BECAUSE I HAVE DONE IT SO MANY TIMES BEFORE WHEN THERE WAS THICK PATCHY FOG WITH THE RWY STILL VISIBLE. THE AWOS ALWAYS RPTS CONDITIONS WORSE THAN THE ACTUAL DUE TO ITS LOCATION. HOWEVER; I REALIZE I USED POOR JUDGEMENT. I HAVE BEEN FLYING OVER 29 YEARS. I NEVER THOUGHT THAT THIS WOULD HAPPEN TO ME. THE FAA STATED THAT THIS WAS AN INCIDENT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT AFTER PASSING THE FIELD AND DETERMINING THAT HE COULD CONDUCT A VISUAL APCH; HE TURNED DESCENDING FOR THE ARPT BUT DURING THAT TIME THE VISIBILITY DECREASED TO THE POINT THAT HE COULD NOT JUDGE HIS POSITION REFERENCING THE RWY LENGTH. AS A RESULT HE LANDED LONG. THIS IS A PERSONAL EMBARRASSMENT FOR HIM AND A WAKE UP CALL. HE NOW QUESTION HIS EVERY DECISION AND AFTER 20+ YEARS AND 11000 HRS FEELS THIS WOKE HIM FROM HIS COMPLACENCY. THE ACFT WAS EXAMINED; THE MINOR DAMAGE REPAIRED AND FLOWN OUT THE FOLLOWING DAY.