As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STALL FAIL CAUTION MESSAGE IN FLIGHT AT FL280, STAYED ON REMAINDER OF FLIGHT. COMPLIED WITH QRH. (EMERGENCY DECLARED) R & R RT TRANSDUCER IAW AMM 27-35-05. PERFORMED OPS TEST OF TRANSDUCER IAW AMM 27-35-05-710-801 AND AIR DATA SENSOR HEATER CONTROLLERS IAW AMM 30-31-15-710-801. NO DEFECTS NOTED.