As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBING OUT, FORWARD CARGO DOOR MASTER WARNING FUSELAGE DOOR, IT WOULD CONTINUE TO COME ON AND TURN OFF THEN STAYED ON. PRESSURIZATION NORMAL. RETURNED TO FIELD. LANDING UNEVENTFUL. ADJUSTED FORWARD BAGGAGE DOOR CLOSED PROXIMITY SENSOR IAW AMM 52-71-01-830-807 PAR 4 D. RETURNED TO SERVICE.