BE20 INVADES RWY CRITICAL AREA CAUSING ACR ACFT TKOF CLRNC TO BE CANCELED AT OMA.

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ON AUG/XA/99 AT APPROX XA50; OMA ARPT; ACTING AS PIC OF A BE20; I BEGAN MY TAXI FROM THE FBO ON THE FIELD. GND CTL HAD ISSUED ME A TAXI CLRNC TO RWY 36. THE INSTRUCTIONS WERE TO TAXI VIA TXWY C TO RWY 36; HOLD SHORT OF RWY 32R. APCHING RWY 32R; I WAS CLRED TO CROSS RWY 32R; CONTINUE TAXIING BUT TO HOLD SHORT OF RWY 36. CONTINUING W ON TXWY C; APCHING RWY 32L; WHICH WAS CLOSED FOR CONSTRUCTION; I REALIZED I HAD MISINTERPRETED THE RWY SIGNS AND WAS APCHING RWYS 32L AND 36 AT THE SAME TIME. I IMMEDIATELY BROUGHT MY ACFT TO A STOP; SHORT OF RWYS 32L AND 36. AT THAT MOMENT; THE GND CTLR ADVISED I HAD VIOLATED THE CRITICAL AREA FOR RWY 36; THE ACTIVE RWY. AS A RESULT OF MY ACFT'S POS ON THE TXWY; A DC9'S TKOF CLRNC HAD TO BE CANCELED. IT WAS DAYTIME VFR AND I APPARENTLY FELT COMFORTABLE TAXIING TO RWY 36 WITHOUT REFERRING TO THE ARPT DIAGRAM ON MY CHART. IT TURNS OUT THAT WHILE TAXIING W ON TXWY C AND AFTER XING RWY 32R; THE 2 RWYS (32L AND 36) INTERSECT EACH OTHER EXACTLY AT TXWY C. I REMEMBER SEEING THE RWY 32L/14R RWY SIGN BUT NOT THE RWY 36 SIGN. I'M CERTAIN IT IS THERE -- I JUST DID NOT SEE IT. THIS CONVERGENCE OF THE 2 RWYS AND THE TXWY C BECAME VERY CLR TO ME AFTER I REFERRED TO THE ARPT DIAGRAM ON THE BACK OF MY CHART. I HAVE GIVEN THIS INCIDENT A GREAT DEAL OF THOUGHT SINCE IT HAPPENED; TRYING TO FIGURE OUT HOW AND WHY IT HAPPENED. THERE IS NO QUESTION THIS INCIDENT IS A RESULT OF ME FAILING TO REFER TO THE ARPT DIAGRAM OF AN ARPT I WAS UNFAMILIAR WITH. THE MISTAKE IS UNQUESTIONABLY MINE AND I RECOGNIZE THIS. HOWEVER; I CANNOT HELP BUT WONDER HAD MY TAXI INSTRUCTIONS INCLUDED 'CLRED TO CROSS RWY 32R; HOLD SHORT OF RWYS 32L AND 36 AT TXWY C;' THIS INCIDENT WOULD NEVER HAVE HAPPENED. IN MY 26 YRS AND OVER 11000 HRS OF FLYING I HAVE NEVER BEEN A PART OF AN ACFT INCIDENT. BEING INVOLVED IN THIS INCIDENT A RATHER HUMBLING LESSON HAS BEEN LEARNED.