As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING AMDS 2040-0191-4L STEP 17, THE MODE SELECTOR LEVER DOES NOT RETURN COMPLETELY TO THE DISARMED POSITION AFTER OPENING THE DOOR WITH THE EXTERIOR HANDLE. MODE SELECTOR LOCKOUT MECHANISM WAS ADJUSTED IAW AMM 52-11. ARM / DISARM OPERATION CHECK WAS PERFORMED PER AMDS AND THE MODE SELECTOR LEVER RETURNS COMPLETELY TO THE DISARMED POSITION AFTER OPENING THE DOOR WITH THE EXTERIOR HANDLE.