As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTS BOTH COMPASS DRIFT IN ALL PHASES OF FLIGHT RESULTING IN HEADING (HDG) FLAGS. THE MAINTENANCE VENDOR PERFORMED CONTINUITY CHECKS, CONNECTOR AND PIN CLEANING ON WIRING BETWEEN AHRS AND FLUX VALVES AND BULKHEAD CONNECTORS. CLEANED FLUID OUT OF P267 CONNECTOR. TAXIED AIRCRAFT, COMPASS SYSTEM OPS CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.