As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI, THE CREW RECEIVED A STICK PUSHER FAIL CAS MESSAGE. AIRCRAFT RETURNED TO THE GATE AND CONTACTED MAINTENANCE CONTROL. DEFERRED THE RT STICK SHAKER SYSTEM. AIRCRAFT WAS REPOSITIONED TO PIT. WHEN AIRCRAFT ARRIVED IN PIT, CREW REPORTED THAT THE RT AOA HAD FAILED. REPLACED THE RT AOA SENSOR IN ACCORDANCE WITH DO-328 MM 27-33-01, AND OPERATION CHECK GOOD. THIS ALSO CLEARED THE STICK SHAKER MEL.