FALCON 50 FLT CREW HAS RWY INCURSION AT SAT.

Narrative

A SHORT DISTANCE TO TAXI. A NEW FO WITH LIMITED FMS EXPERIENCE. WE RECEIVED A CLRNC TO TAXI DOWN RWY 3 TO RWY 30 THAT IS PART OF RWY 3. WHEN I LOOKED AT THE PLATE FOR SOME REASON I THOUGHT THE INTXN WAS FURTHER DOWN THE RWY THAN IT WAS. I GOT INVOLVED WITH TAXI AND BEFORE TKOF CHKLIST WHILE HELPING SET UP THE NAV SYS. I TAXIED ACROSS THE ACTIVE RWY AND WAS TOLD BY GND I HAD GONE THROUGH THE ACTIVE AREA. NO XMISSION WAS MADE TO ME TILL AFTER THE INCURSION. AN ACR HAD TO GO AROUND. THIS INCURSION WAS TOTALLY MY FAULT. MY FO WAS VERY BUSY. I SHOULD HAVE TAKEN MORE TIME ON THE RAMP TO BE SURE ALL WAS SET UP. FO IS EX-ACR AND DOES NOT START A CHKLIST UNLESS ASKED TO DO SO. WE HAD TAXIED SOME DISTANCE BEFORE I REALIZED THIS PROCESS HAD NOT BEEN STARTED. THIS ALSO PUT US BEHIND A LITTLE AND A SHORT TAXI JUST MADE IT WORSE. BOTTOM LINE IS I SHOULD HAVE BEEN OUTSIDE; NOT INSIDE. SUPPLEMENTAL INFO FROM ACN 572305: THE CAPT WAS TAXIING ON A CLOSED RWY (RWY 3) TO DEPART ON RWY 30L. HE CALLED FOR A CHKLIST. I PUT MY HEAD DOWN TO READ THE CHKLIST FOR ABOUT 20 SECONDS. WHEN I COMPLETED THE CHKLIST I SAID TO THE CAPT 'YOU'RE ON THE RWY.' THE CAPT HAD TAXIED ONTO THE ACTIVE RWY 30L; AND CAUSED AN AIRPLANE TO DO A GAR. THE CHKLIST I RAN (BEFORE TKOF) REQUIRES SOME HEADS DOWN CHKS IN THE COCKPIT WHICH PREVENTED ME FROM LOOKING OUTSIDE AT ALL TIMES.