As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED THAT THE FORWARD ACTUATOR LIGHT ILLUMINATED IN FLIGHT AT 16,000 FEET. THE ACFT RETURNED TO FIELD. MX FOUND DEFECTIVE PAX DOOR ACTUATING SWITCH (INTERIOR) CAUSING ACTUATOR TO ACTIVATE IN FLIGHT, SWITCH WAS REPLACED AND PAX DOOR ACTUATING SYS OPS CHECKED GOOD.