What was found
FO/STBY COMPASS HEADING DISAGREE BY 40-50 IN FLIGHT AFTER LANDING 174, 118, 111 ON GROUND RESPECTIVELY. SWAPPED AHRS FOR TROUBLESHOOTING AND PERFORMED OPS CHECK NO HEADING SPLIT NOTED IAW AMM 34-21-01.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FO/STBY COMPASS HEADING DISAGREE BY 40-50 IN FLIGHT AFTER LANDING 174, 118, 111 ON GROUND RESPECTIVELY. SWAPPED AHRS FOR TROUBLESHOOTING AND PERFORMED OPS CHECK NO HEADING SPLIT NOTED IAW AMM 34-21-01.