As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DEPARTURE RECEIVED LVL 2 CARGO DOOR FWD "B" ALERT, RAN QRH AND ALERT DISAPPEARED, MEL 52-40-01-05: CARGO DOOR FWD "B" ALERT INOP. VERIFY DOOR IS CLOSED AND LOCKED PRIOR TO BLOCK-OUT. INSPECTED "B" DOOR WARNING SWITCH FOR FWD LWR CARGO DOOR WARNING FOR CONDITION AND SECURITY. NOTED NO FAULTS. REMOVED AND REPLACED THE LOWER FWD CARGO DOOR WARNING "B" (D1-92) PROXIMITY SENSOR, DOOR WARNING SYSTEM OPS NORMAL. REF MD10-10 AMM 52-70-03-2.