What was found
(CAN) ON TAKEOFF, CREW RECEIVED AN ATT FAIL ON LT EFFIS, CREW RETURNED TO LAND, AHARS UNIT REPLACED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) ON TAKEOFF, CREW RECEIVED AN ATT FAIL ON LT EFFIS, CREW RETURNED TO LAND, AHARS UNIT REPLACED.