As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LG WOULD NOT COME UP UNTIL DOWN LOCK RELEASE SWITCH WAS PRESSED. THE GEAR EXTENDED NORMALLY FOR LANDING. FLT 5335 REPLACED THE NLG PROXIMITY SENSOR & PERFORMED NUMEROUS GEAR SWINGS, LANDING GEAR SYSTEM OPERATES NORMALLY. OPERATIONS CHECKED, PN ZS-00417-02.