As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, THE EMERGENCY EXIT (OVERWING LEFT) DOOR WARNING AND THE FLIGHT RETURNED TO DEPARTURE. (NO EMERGENCY WAS DECLARED). MAINTENANCE FOUND THE COVER FOR LEFT OVER WING EMERGENCY EXIT HAD FALLEN OFF AND REINSTALLED IAW TSM 52-21-00-810-A. NO FAULTS NOTED