What was found
DURING A FLIGHT THE CO-PILOT HORIZONTAL GYRO FLAGGED AND BECAME UNSERVICEABLE. THE INSTRUMENT WAS REPLACED WITH OVERHAULED WITHOUT FURTHER INCIDENT.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING A FLIGHT THE CO-PILOT HORIZONTAL GYRO FLAGGED AND BECAME UNSERVICEABLE. THE INSTRUMENT WAS REPLACED WITH OVERHAULED WITHOUT FURTHER INCIDENT.