As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT 065 FLIGHT 5042 FROM CHARLESTON SC TO RALEIGH. AFTER TAKEOFF, PASSENGER DOOR LIGHT ILLUMINATED. NO CABIN PRESSURE WAS LOST. AIRCRAFT RETURNED TO CHARLESTON AND LANDED WITH NO OTHER PROBLEMS. NO EMERGENCY PROCEDURES WERE USED. DOOR LOCKS WERE CHECKED. ALL LOCKS INDICATED LOCKED. AFTER RETURNING TO CHARLOTTE. MAINTENANCE ADJUSTED THE UPPER MICRO SWITCH. SYSTEM GROUND CHECKED GOOD. AIRCRAFT WAS RETURNED TO SERVICE.