As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
KSEA - NR 2 COMPASS FLAG IN VIEW FOLLOWED BY CAPT HSI HEADING FLAG. REROUTED FLIGHT BACK TO SEATTLE. OVERWEIGHT LANDING INSPECTION REQUIRED. REPLACED NR 2 DIRECTIONAL GYRO. OPS CHECK GOOD ON GROUND. COMPLIED WITH OVERWEIGHT INSPECTION PER MM 5-50-0. NO DEFECTS NOTED. (M)