As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED NOSE GEAR DOORS ATTEMPTED TO OPEN ON APPROACH TWO TIMES WITH GEAR SELECTED IN UP POSITION. SOUND ONLY, NO INDICATION. MX PERFORMED GVI OF NLG AREA AND PERFORMED LANDING GEAR EXTENSION AND RETRACTION. OPS CHECKED SUCCESSFUL WITH NO FAULTS FOUND. ACFT WAS APPROVED FOR RETURN TO SERVICE.