As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOSS OF CAPTAIN'S AIRSPEED AT FL360 IN ICING CONDITIONS. CAPTAINS SIDE AIRSPEED 40KTS LESS THAN FIRST OFFICER`S AIRSPEED & STBY AIRSPEED. DECLARED EMER, TROUBLESHOOTING AIRSPEED DIFFERENCE IAW FIM 34-22-00-810-816. FOUND WATER IN NR 1 PITOT SYS. DRAINED WATER, OPERATIONS CHECKED GOOD IAW AMM 34-13-00.