As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB "IAS DISAGREE" ILLUMINATED. APPEARED THAT NR 1 INDICATION WAS AT FAULT. AIRSPEED FLUCTUATIONS BETWEEN CA AND F/O & STBY WAS AS MUCH AS 30-40 KTS. R & R CAPTAIN`S PITOT PROBE IAW AMM 34-11-01, OPS & LEAK CHECKED NORMAL. NO LEAKS IAW AMM 34-11-00. REPLACED QUICK DIS FITTINGS TO CAPTAIN`S & FO ADM`S ALL NORMAL.