As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DTW - FLT 909 - ALTERNATE TRIM MOTO TRIMS WHEN RIGHT SWITCH IS MOVED. LEFT SWITCH IN CENTER POSITION, RIGHT SWITCH ALONE WILL MOVE TRIM IN BOTH DIRECTIONS. REMOVED AND REPLACED ALT TRIM BRAKE RELEASE SWITCH AND ALT TRIM SWITCH. SYSTEM OPS CHECK GOOD IAW MM 27-40-00. (M)