What was found
(CAN) AIRCRAFT TURNED BACK DUE TO FAILED NR 1 AHRS FAILED, RED MAG FLAG, ATC REPORTED NAVIGATION WAS INNACURATE, HEADING OFF.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) AIRCRAFT TURNED BACK DUE TO FAILED NR 1 AHRS FAILED, RED MAG FLAG, ATC REPORTED NAVIGATION WAS INNACURATE, HEADING OFF.