As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3252 AT 3000FT AGL MASTER CAUTION L FWD CABIN DOOR. WENT OUT AFTER 3 SECONDS. OCCURRED AGAIN ON FINAL APPROACH. CORRECTIVE ACTION: CLEANED L1 DOOR SILL AREA. L1 DOOR GND OPS CKD NML. ALL INDICATIONS NML. NO 90 DAYS HISTORY. A/C OK FOR SVC. (4706132)