What was found
AFTER LIFTOFF, RECEIVED STAB TRIM AND MACH TRIM CAUTION MESSAGES. UNABLE TO RESET STAB TRIM CH1 OR CH2 OR MACH TRIM. RETURNED TO LAX. CLEANED CAPT'S SIDE DISCONNECT SWITCH ON YOKE. OPS CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFTER LIFTOFF, RECEIVED STAB TRIM AND MACH TRIM CAUTION MESSAGES. UNABLE TO RESET STAB TRIM CH1 OR CH2 OR MACH TRIM. RETURNED TO LAX. CLEANED CAPT'S SIDE DISCONNECT SWITCH ON YOKE. OPS CHECK GOOD.