As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FORWARD CARGO DOOR INDCATED OPEN DURING CLIMBOUT, MASTER CAUTION FOR FUSELAGE DOORS. RETURNED TO FIELD. LANDING UNEVENTFUL. IAW FIM TASK 52-70-00-810-801 FOUND PRESENT FAULT FBDCL UNREASONABLE FAR. GAP WAS 8.30 MH. FOUND PROXIMITY SENSOR SLEEVE LOOSE. ADJUSTED SLEEVE TO WITHIN RANGE, AND SECURED IAW AMM TASK 52-71-01-830-807. PARA 4D. OPS CHECKED GOOD. RETURNED TO SERVICE.