As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED THAT DURING FLIGHT THE ANGLE OF ATTACH INDICATOR (AOA) WAS NOT FUNCTIONING PROPERLY. THE MAINTENANCE PROVIDER TROUBLESHOT AND DETERMINED THE LEFT PRESSURE SENSOR HAD FAILED. THE FAULTY SENSOR WAS REMOVED AND REPLACED WITH A NEW PRESSURE SENSOR. THE MX VENDOR PERFORMED SENSOR AND AOA TESTS AND FOUND BOTH TO BE SATISFACTORY. THE AIRCRAFT WAS RETURNED TO SERVICE.