As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - FLIGHT 2422 - AIRCRAFT RETURNED TO FIELD WHEN AFTER TAKEOFF THE CREW RECEIVED A STALL FAIL CAUTION MESSAGE. THE STICK SHAKER ACTIVATED WELL ABOVE APPROXIMATE STALL SPEED RANGE. MAINTENANCE INSPECTED THE AIRCRAFT AND REPLACED THE DAMAGED RIGHT ANGLE OF ATTACK VANE. OPERATIONAL CHECKS WERE PERFORMED AND CHECKED GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.