As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED THE PILOT'S ALTIMETER TO BE READING 150 FEET HIGH. REMOVED AND REPLACED PILOT'S ALTIMETER. SUBSEQUENT BENCH CHECK VERIFIED ALTIMETER TO BE INDICATING 150 FEET HIGH. THE BAROMETRIC WINDOWS DISPLAYED 1,017 MILLIBARS AT 29.92 IHG.