What was found
AP PITCH TRIM CAUTION MESSAGE CAME ON DURING FLIGHT. STAB TRIM CH 1 WOULD NOT ALLOW TRIM PAST FOUR UNITS. STAB TRIM CH 2 WOULD ALLOW TRIM PAST FOUR UNITS. REMOVED HSTA AND MCU, INSTALLED SERVICEABLE HSTA AND MCU.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AP PITCH TRIM CAUTION MESSAGE CAME ON DURING FLIGHT. STAB TRIM CH 1 WOULD NOT ALLOW TRIM PAST FOUR UNITS. STAB TRIM CH 2 WOULD ALLOW TRIM PAST FOUR UNITS. REMOVED HSTA AND MCU, INSTALLED SERVICEABLE HSTA AND MCU.