What was found
(CAN) WHEN OPERATING THE PILOT/CO-PILOT STAB TRIM SWITCHES, THE STAB TRIM CHANNEL NR 1 INOP MESSAGE APPEARS.REPLACED THE HSTA AND MCU. SERIAL NUMBERS NOT AVAILABLE AT THIS TIME. AIRCRAFT RETURNED TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) WHEN OPERATING THE PILOT/CO-PILOT STAB TRIM SWITCHES, THE STAB TRIM CHANNEL NR 1 INOP MESSAGE APPEARS.REPLACED THE HSTA AND MCU. SERIAL NUMBERS NOT AVAILABLE AT THIS TIME. AIRCRAFT RETURNED TO SERVICE.