SMA PLT LANDS ON CLOSED RWY AT DESTINATION ARPT FOR WHICH HE HAD NOT CHECKED NOTAMS.

Narrative

1 HR PRIOR TO FLT; I CHKED FLT INFO WITH DUATS; ORIGINALLY PLANNING A SIGHTSEEING FLT FOR A FRIEND AND HIS MOTHER TO KINGMAN ARPT (9K8). I CHKED BOTH WX AND NOTAMS. UPON ARRIVING AT THE ARPT; WE DECIDED TO AMEND OUR DEST TO EL DORADO ARPT (EQA). I HAD CHKED THE TFR'S IN THE AREA; BUT HAD NOT SPECIFICALLY CHKED NOTAMS FOR EQA. OUR FLT TO EQA WAS UNEVENTFUL; UNTIL I TRIED TO TURN ON THE PCL. PLENTY OF LIGHT REMAINED; SO WHEN THE PCL FOR RWY 15/33 DID NOT ACTIVATE; I WAS NOT CONCERNED. THE WIND HEAVILY FAVORED RWY 15. THE APCH AND LNDG WAS NORMAL; BUT DURING THE ROLLOUT I SAW A LARGE POTHOLE JUST L OF THE CTRLINE; WHICH I SWERVED TO AVOID. I COMMENTED TO MY PAX THAT I COULDN'T BELIEVE THAT WAS THERE ON THE RWY. WE TAXIED BACK TO THE DEP END OF RWY 15; AFTER ALLOWING MY PAX TO CHANGE SEATS. AS I TAXIED ONTO THE RWY; I NOTICED SOMETHING THAT I HAD NOT SEEN FROM THE AIR. THERE WAS AN 'X' TO MARK A CLOSED RWY OUT OF 2 INCH BY 4 INCH PIECES OF LUMBER APPROX 4 FT LONG. THE WOOD WAS PAINTED WHITE AND WAS INVISIBLE FROM THE AIR. IT WAS NOT UNTIL I TRIED TO TAKE OFF AGAIN THAT I REALIZED THAT I HAD LANDED ON A CLOSED RWY. THIS INCIDENT COULD'VE BEEN AVOIDED HAD I CHKED NOTAMS; WHERE THE RWY WAS SHOWN AS BEING CLOSED. THIS COULD'VE ALSO BEEN AVOIDED HAD THE ARPT BEEN USING THE STANDARD LARGE YELLOW 'X' AT THE END OF THE RWY. I TAXIED TO THE CROSS RWY AND COMPLETED THE FLT WITHOUT FURTHER INCIDENT.