As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER TAKEOFF, THE CREW REPORTED THE CAPTAIN''S ADI AND HSI WERE FLAGGED. THE CREW TRIED RESETTING THE BREAKERS AND GETTING THE AHRS TO REINITIALIZE. THIS HAD NO EFFECT. AHRS WAS SWAPPED ON THE GROUND AND SNAG MOVED WITH THE BOX. PARTS REPLACED.