As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ROLL FLIGHT DECK SMOKE LIGHT ILLUMINATED ON F/E PANEL ALONG WITH SMOKE LIGHT ON MWP AND CONTINUOUS CHIME. TAKEOFF WAS REJECTED AT 105KTS AND AIRCRAFT RETURNED TO GATE. FOUND E&E SMOKE DETECTOR SATURATED WITH WATER. INVESTIGATION REVEALED THAT HEAVY RAIN SHOWERS WERE PRESENT DURING CARGO LOADING OPERATION. REPLACED SMOKE DETECTOR AND FUNCTIONAL CHECK CARRIED OUT IAW 26-11-11. AIRCRAFT RETURNED TO SERVICE.