RWY INCURSION.

Narrative

NIGHT; RAIN; TAXI RWY 28C IN PIT. HAD LIGHT UP AND HEAD IN COCKPIT READING CHKLISTS; FAILED TO NOTICE CAPT MISS TURN FOR RWY 28C TAXI RTE. HE TAXIED ACROSS THE DEP END OF RWY 28C WHEN I RECOGNIZED OUR LOCATION AND ERROR. CAPT SAID HE WAS THINKING RWY 28L. NEW EMPHASIS ON CORRECT CHKLIST RESPONSE HELPED DISTRACT ME FROM OVERALL PICTURE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR FLIES THE F-100 FOR A MAJOR UNITED STATES ACR. HE AND THE CAPT OF THIS INCIDENT GET ALONG VERY WELL. THERE WAS 'NO PERSONALITY PROB; JUST PROCS.' THERE WAS A VERY SHORT TAXI RTE; NIGHT; RAIN; AND THE NORMAL RTE IS TO TAXI TO RWY 28L. THIS IS WHERE THE CAPT WAS GOING WHEN HE CROSSED RWY 28C. THE TWR DID NOT NOTICE THIS; THE CREW TOLD IT. THE FO WAS DOING WHAT HE WAS SUPPOSED TO DO WHILE TAXIING; FEEDING THE COMPUTER AND CHKLISTS. THE FO DID NOT HAVE TIME TO HELP THE CAPT IN TAXIING. THIS WAS A SINGLE ENG TAXI; A PROC INGRAINED AT HIS ACR. THE FO DOES NOT LIKE THIS AS IT IS ONE MORE DISTR AT A BUSY TIME.