AN N265 SABRELINER CREW CROSSES RWY 23R AT YIP AFTER HAVING BEEN TOLD TO HOLD SHORT. A C441 ON TKOF CROSSES OVER THEM AT 250 FT.

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POSSIBLE RWY INCURSION: AFTER LNDG ON RWY 23L ACFT WAS INSTRUCTED TO TURN R AT THE END ON TXWY B AND REMAIN ON FREQ; CLRED TO CUSTOMS. TO GET TO CUSTOMS YOU MUST CROSS A PARALLEL RWY. UPON XING THE RWY I OBSERVED AN ACFT THAT HAD JUST DEPARTED THE PARALLEL RWY. ABOUT THE TIME THAT I CROSSED THE RWY CTRLINE THE DEPARTING ACFT PASSED OVERHEAD AT ABOUT 200-250 FT OF ALT. THE TWR TOLD US THAT WE WERE INSTRUCTED TO HOLD SHORT. BUT NEITHER MY COPLT WHO WAS FLYING AT THE TIME OR MYSELF HEARD THE INSTRUCTIONS. SUPPLEMENTAL INFO FROM ACN 404720: I; AN FO; WAS FLYING THE AIRPLANE. I WAS STILL ON A LNDG ROLL (80-100 KTS) WHEN TWR GAVE US INSTRUCTIONS TO TAXI. AS I WAS CONCENTRATING STOPPING THE AIRPLANE; I WAS NOT PAYING ENOUGH ATTN TO INSTRUCTIONS GIVEN BY THE TWR. THE CAPT AND I BOTH THOUGHT WE WERE CLRED TO TAXI ALL THE WAY TO THE RAMP; AND DID NOT HOLD SHORT OF THE PARALLEL RWY. THERE WERE NO OTHER ACFT INVOLVED. WITH OUR ATTN BEEN GIVEN TO LNDG THE AIRPLANE; WE DIDN'T PROPERLY ACKNOWLEDGE THE CLRNC. SUPPLEMENTAL INFO FROM ACN 404989: I HAD PUT A LEARJET INTO POS ON RWY 27L AND HAD A SABRELINER ON FINAL FOR RWY 23L AND SEVERAL IFR DEPS APCHING RWYS 23L AND 23R. KNOWING THAT I WOULD NOT GET THE RELEASE FOR THE LEARJET BECAUSE OF A CESSNA 5 MI WSW OF THE ARPT; I ATTEMPTED TO CHANGE THE ORDER OF THE IFR DEPS. AS THE SABRELINER WAS COMPLETING HIS LNDG ROLL HE STATED THAT HE NEEDED TO GO TO CUSTOMS ON THE W RAMP INSTEAD OF HIS NORMAL SPOT ON THE E RAMP. SO I GAVE HIM INSTRUCTIONS TO TURN R ON TXWY B AND HOLD SHORT OF RWY 23R; BECAUSE I HAD CLRED A C441 FOR TKOF ON RWY 23R. MY SUPVR THEN TOLD ME TO HAVE THE SABRELINER REMAIN THIS FREQ FOR FEAR HE MIGHT SWITCH TO GND CTL IN-BTWN THE RWYS. I THEN STARTED A SCAN AROUND THE ARPT. AS I MOVED MY SCAN AROUND THE ARPT THE SUPVR ASKED ME IF THE SABRELINER WAS HOLDING SHORT. I THEN LOOKED BACK AT THE SABRELINER TO FIND HIM XING THE RWY AND THE C441 150 FT AIRBORNE NEAR MID-FIELD. THERE WAS NO TIME TO TAKE CORRECTIVE ACTION. I BELIEVE THIS INCIDENT WAS CAUSED BY THE LACK OF THE SABRELINER PLT TO CORRECTLY ACKNOWLEDGE HIS HOLD SHORT INSTRUCTIONS; THEREFORE IT SHOULD BE MANDATED IN THE AIRMAN'S INFO MANUAL THAT ALL PLTS REPEAT THEIR HOLD SHORT INSTRUCTIONS VERBATIM SO THERE IS NO CONFUSION. ADDITIONALLY; THE NEED TO CHANGE THE IFR DEP SEQUENCE IN ORDER TO MINIMIZE THE DELAYS OFF THE ARPT CREATED DISTRACTIONS INSIDE THE TWR CAB. PLEASE NOTE THAT THIS ARPT IS VERY UNIQUE IN THAT EVERY RWY WE HAVE INTERSECTS EACH OTHER AND WE HAVE VERY FEW TXWYS TO THE RWYS; SO MOST OF THE TIME WE MUST USE RWYS TO GET TO OTHER RWYS.