As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STAN CHANNEL NR 1 INOP MESSAGE CAME ON AND WOULD NOT RESET. CLEANED STAB TRIM ENGAGE SWITCHES. PERFORMED OPERATIONAL CHECK OF HSTCU IAW MM 27-10-00-710-801 AND SELF DIAGONOSTICS OF HSTCU IAW MM 27-41-00-790-801. OPERATIONAL CHECKS SATISFACTORY. NO DEFECTS NOTED AT THIS TIME.