As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL 370 BOTH PRESERVED IAS MESSAGE. CAPTAIN`S PFD INDICATES 239 KIAS .74 MACH, FIRST OFFICER`S SIDE INDICATES 250 KIAS .77 MACH, STANDBY SHOWS 248 KIAS. ALSO GET SPS ADVANCED ON EICAS. BACK TO NORMAL DESCENDING THRU FL 200. DRAINED WATER FROM PITOT 1 - 2 SYSTEM DRAINS. PERFORMED OPERATIONAL TEST OF THE ADC SYSTEM IAW AMM 34-13-00 & 34-15-00 WITH NO FAULTS NOTED.