What was found
DURING FLIGHT THE CAPTAIN'S ALT SPINNING THROUGH ALTITUDES. AIRCRAFT RETURNED TO MSP. MAINTENANCE REPLACED NR 1 ALTIMETER. OPS CHECK GOOD IAW SF340 AMM CHAP 34. ALTIMETER TESTED TO 50K.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING FLIGHT THE CAPTAIN'S ALT SPINNING THROUGH ALTITUDES. AIRCRAFT RETURNED TO MSP. MAINTENANCE REPLACED NR 1 ALTIMETER. OPS CHECK GOOD IAW SF340 AMM CHAP 34. ALTIMETER TESTED TO 50K.