What was found
PILOT NOTICED ALTIMETER APPEARED TO BE STUCK. THIS WAS CONFIRMED BY CROSS REFERENCEING THE CO-PILOT AND GPS ALTIMETERS. REPLACED FAULTY ALTIMETER.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PILOT NOTICED ALTIMETER APPEARED TO BE STUCK. THIS WAS CONFIRMED BY CROSS REFERENCEING THE CO-PILOT AND GPS ALTIMETERS. REPLACED FAULTY ALTIMETER.