As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT CREW HEAR A POPPING SOUND IN COCKPIT FOLLOWED BY "NOSE DOOR OPEN L" CAS MESSAGE. FOLLOWED EMERGENCY CHECKLIST AND DIVERTED. LANDING WAS UNEVENTFUL. MAINTENANCE FOUND NOSE FORWARD LATCH OPEN. LATCH WAS ADJUSTED AND LUBRICATED. OPERATION CHECKED OKAY. AIRCRAFT WAS RETURNED TO SERVICE.