As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A VERTICAL GYRO WAS INSTALLED IN AIRCRAFT IN LATE AUGUST. THIS UNIT FAILED IN LATE OCT AND SHOWED SIGNS OF BEING HOT INTERNALLY (CANNON PLUG RING HAD BLUED). THIS UNIT HAD BEEN OVERHAULED IN JUNE '96. WAS SENT A REPLACEMENT (OVERHAULED) GYRO.