As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOI- RETURNED TO FIELD DUE TO STABILIZER TRIM, MACH TRIM CAUTION MESSAGES INFLIGHT. STABILIZER AND MACH TRIM WOULD NOT RESET. AIRCRAFT LANDED WITHOUT INCIDENT. REMOVED AND REPLACED STABILIZER 1 ENGAGE SWITCH. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.