As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN)AIRCRAFT COMPASS SYSTEM REPORTED UNRELIABLE. EXAMINATION OF COMPASS COMPONENTS AND WIRING REVEALED THAT THE FLUX VALVE WAS SATURATED WITH INSTRUMENT OIL. COLLINS CONFIRMED THAT THE LOSS OF OIL COULD R ESULT IN FAILURE OF THE COMPONENT. FLUX VALVE WAS REPLACED.