As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MACH TRIM FAIL UPON RECALL DURING AFTER START CHECK. GROUNDED - YES. PERFORMED B737-9 IFIM 22-11-00-810-074, FOUND FAULT CODE 22-11191, 22-11276 AND 22-11202. FOUND FAULT CODE 22-11336 ON CHANNEL B. CYCLED AIRCRAFT POWER, FAULTS RETURNED BOTH A AND B CHANNELS. FLIGHT HISTORY LOGS MULTIPLES MACH TRIM ACTUATOR FAULTS. REMOVED AND REPLACED MT ACTUATOR IN REF TO B737-9 AMM 22-11-24. MT ACTUATOR MULTIFUNCTION TEST PASSED.