A BA-3100 FLT CREW INADVERTENTLY CROSS THE HOLD SHORT LINE WITH AN ACFT ON TKOF ROLL RESULTING IN A C172 ABORTING HIS TKOF DUE TO COCKPIT DISTRS AND AFTER LNDG ASSUMPTIONS.

Narrative

AFTER LNDG ON RWY 28 AT CGI; WE WERE TOLD TO TAXI TO THE TERMINAL AND HOLD SHORT OF RWY 20. MY FO READ IT BACK; BUT I MISSED THE HOLD SHORT INSTRUCTIONS. AS WE APCHED RWY 20; I LOOKED BOTH WAYS AND SAW A CESSNA STARTING A TKOF ROLL. I IMMEDIATELY STOPPED AND; AT THE SAME TIME; THE GND CTLR TOLD ME TO HOLD SHORT. I STOPPED SHORT OF RWY 20; BUT HAD PASSED THE HOLD SHORT LINE. THE CESSNA ALSO ABORTED HIS TKOF. THE CHAIN OF EVENTS THAT CAUSED THIS SIT WERE: 1) MY INATTN/DISTRS; 2) MY FO BEING INVOLVED WITH AFTER LNDG CHKLIST AND NOT BEING HEADS UP. THERE WAS NO NEAR COLLISION DUE TO THE FOLLOWING: 1) MY HABIT OF LOOKING EVEN THOUGH I THINK I AM CLRED TO CROSS. 2) THE ALERT GND CTLR ISSUED US HOLD SHORT INSTRUCTIONS A SECOND TIME AS WE APCHED THE RWY AND WERE XING THE HOLD SHORT LINE. 3) THE CESSNA PLT WAS ALERT TO HIS ENVIRONMENT AND EITHER SAW ME APCHING OR HEARD THE GND CTLR'S SECOND HOLD SHORT COMMAND. SO; WHILE HUMAN FAILURES SET UP A CHAIN OF EVENTS THAT COULD HAVE LED TO AN ACCIDENT; HUMAN PERFORMANCE ON THE PART OF SEVERAL PEOPLE ALSO BROKE THAT CHAIN. IN THE FUTURE I WILL BE MORE DILIGENT AND LESS COMPLACENT IN LISTENING TO TAXI INSTRUCTIONS. I WILL ALSO HAVE MY FO'S MONITOR MORE CLOSELY DURING THIS CRITICAL PHASE OF OPS. SUPPLEMENTAL INFO FROM ACN 588557: WHEN I LOOKED UP; WE HAD PASSED THE HOLD SHORT LINE; BUT WEREN'T IN THE RWY YET. I TOLD THE CAPT TO STOP. THE TWR AT THAT TIME CALLED US TO HOLD SHORT. MY CAPT HAD NOT HEARD THE HOLD SHORT INSTRUCTION. I HADN'T LOOKED UP QUICKLY ENOUGH TO MAKE SURE WE WERE DOING EVERYTHING CORRECTLY. COMPLACENCY AND ASSUMPTION CAUSED THIS PROB. MY CAPT HAS BEEN FLYING ALL HIS LIFE. I ASSUMED THAT HE KNOWS EVERYTHING AND DOESN'T NEED HELP; SO I GOT LAZY WATCHING OUT FOR US. HE ASSUMED THAT I WAS WATCHING OUT FOR US AND DIDN'T PAY CLOSE ATTN TO THE INSTRUCTIONS. WE GO TO THAT ARPT 3 TIMES PER WK AND THE INSTRUCTIONS ARE ALWAYS; 'TAXI TO THE RAMP; REMAIN MY FREQ.' EXCEPT FOR THIS TIME; OF COURSE.