As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER FIRST TURN, HEADING COMPARATOR FLAG CAME ON AND THERE WAS A DIFFERENCE BETWEEN AHRS OF 17 GRADE AND NO HEADING DISPLAY ON FMA AND NO AUTO PILOT WERE AVAILABLE. IAW AMM 34-21-06/201 IT WAS REMOVED AND REPLACED FLUX VALVE NR 1 COMPASS SWING IS ALIGNED, TEST SATISFACTORY.