As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL 250 FUSELAGE DOOR WARNING LIGHT ILUMINATED, DESCENT IAW EMERG PROCEDURE, LIGHT AND CHIME INTERMITTENT UNTIL LANDING, FWD BAGGAGE DOOR. PLACED ON MEL 52-10-5. MEL CLEARED ON 12/1 BY: REPLACED FWD CARGO DOOR LOCK PROX SENSOR AND SPLICED TO EXSISTING HARNESS IAW Q400 WDM 20-16-20, RIGGED IAW Q-400 AMM TASK 52-71-01-830-807 ALL OPS CHECKS GOOD CLEARS MEL. RETURNED TO SERVICE.