As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT COMPLAINED OF ''POP'' WHEN LANDING GEAR WAS EXTENDED. LANDING MADE WITHOUT INCIDENT. UPON INVESTIGATION COULD FIND NO PROBLEMS WITH GEAR RETRACTION SYSTEM. FURTHER INVESTIGATION REVEALED LEFT PROPELLER NR 3 BLADE DEICE WIRE HARNESS CLAMP HAD BROKEN OFF AND HIT THE LEFT SIDE OF FUSELAGE CAUSING THE ''POP'' THE PILOT HEARD. REPLACED BROKEN CLAMP AND REPAIRED HARNESS. (X)