What was found
STAB TRIM NR 1 & NR 2 WILL NOT REMAIN ENGAGED IN FLIGHT. MACH TRIM INOP. A/C RETURNED TO SLC FOR LANDING. REMOVED AND REPLACED NR 1 STAB TRIM DISCONNECT SWITCH.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
STAB TRIM NR 1 & NR 2 WILL NOT REMAIN ENGAGED IN FLIGHT. MACH TRIM INOP. A/C RETURNED TO SLC FOR LANDING. REMOVED AND REPLACED NR 1 STAB TRIM DISCONNECT SWITCH.