TKOF ABORTED WHEN AIRSPD DIFFERENCES NOTED BTWN CAPT'S AND FO'S INDICATORS.

Narrative

ON JAN/FRI/92 DEPARTING FROM BELLINGHAM; WA; FO WAS ABOUT TO FLY THE LEG FROM BELLINGHAM TO SEATTLE AT XY. ALL STANDARD AND NORMAL COMPANY PROC WERE USED AS THE FO PUSHED THE TWR LEVERS UP AND ASKED ME TO SET THE PWR. I CALLED 'AIRSPD ALIVE; 80 KTS'; AND AS I CALLED 'V1 ROTATE' (SAME SPD); THE FO SAID 'NO!; THERE'S SOMETHING WRONG.' AS THE AIRPLANE WAS NOT ROTATING I SAW NO CHOICE BUT TO IMMEDIATELY ABORT THE TKOF AND DID SO INSTANTLY. I SLAMMED THE THRUST LEVERS BACK; DEPLOYED THE AIR BRAKE AND LIFTED SPOILERS AND WE BOTH STOOD ON THE BRAKES. WE SLID OFF THE END OF THE RWY FOR APPROX 150 FT INTO THE GRASSY MUDDY OVERRUN AREA BEFORE WE STOPPED. AFTER WE HAD STOPPED THE FO INFORMED ME THAT HIS AIRSPD INDICATOR HAD LAGGED ABOUT 15 KTS BEHIND MY V1 CALL. WE ALSO NOTED AT THIS POINT THAT HIS ALTIMETER NOW READ 400 FT BELOW SEA LEVEL (V1 WAS 106 KTS). MAINT PERSONNEL RPTED TO ME THE FOLLOWING MORNING THAT WATER HAD BEEN FOUND IN THE STATIC SYS PROBABLY FROM THE HVY RAINS AND WIND THE NIGHT BEFORE AND A TEST HAD REVEALED A DISCREPANCY IN AIRSPD INDICATOR READINGS BTWN THE CAPT AND FO'S SIDES.