As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACCELERATING THROUGH 250 KIAS AT 10,000 FT, ALTIMETERS FLAGGED AND HAD 150 FT DIFFERENCE. AIRSPEED INDICATORS HAD A 5 KNOT SPLIT. AFTER REDUCING AIRSPEED BACK TO AROUND 250 KIAS ALTIMETERS CAME BACK WITHIN TOLERANCE. REMOVED AND REPLACED NR 1 PITOT/STATIC PROBE IAW 34-11-01. OPS AND LEAK CHECKS GOOD. P/N: 0856KU9, S/N OFF: 143377.