As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OMA - FLT 38 - AFT CARGO DOOR LIGHT ILLUMINATED AFTER TAKEOFF. RETURNED TO OMA. DOOR INDICATION PLACARDED PER MEL. ON ACFT LAYOVER, THE DOOR SENSOR WAS REPLACED AND THE MISSING DOOR SENSOR TARGET WAS INSTALLED. SENSOR PART NR 8-340-02. CHECK-C 8-9-97 MCI. (X)