As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PROBLEM DESCRIPTION: MAIN CARGO DOOR WARNING LIGHT ILLUMINATED DURING CLIMB, HOOKS UNLATCHED LIGHT WAS ILLUMINATED ON CARGO DOOR CONTROL PANEL. CORRECTIVE ACTION & OTHER PERTINENT INFORMATION: ADJUSTED LATCH LOCK SWITCH IAW B737 AEI MM 52-33-01, OPS CHECK GOOD NO DEFECTS NOTED.