As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEVEL AT CRUISE AT FL 270, MAIN CARGO DOOR LIGHT ILLUMINATED WHEN INDICATOR LIGHT WERE ON DIM, LIGHT EXTINGUISHED. WHEN INDICATOR LIGHTS MOVED BACK TO BRIGHT, MAIN CARGO DOOR LIGHT ILLUMINATED. COMPLIED WITH QRH. R&R MCD OPEN INDICATOR L651 AS PER SMP. INDICATOR ILLUMINATED WELL WHEN MAIN DECK DOOR IS OPEN. OPS CHECK OF MAIN DECK CARGO DOOR PER MM 52-32-00-5-0. ALL LIGHTS INDICATORS WORKED NORMALLY.