As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON DEPARTURE FROM KHND RECEIVED A GEAR DISAGREE N WITH AMBER X OVER NOSE GEAR INDICATING NOT RETRACTED. CHECKLISTS WERE RUN WITH GEAR BLOWDOWN PULLED, RECEIVED 3 GREEN INDICATION AND LANDED UNEVENTFULLY. REMOVED FAULTY NLG UPLOCK SWITCH AND REPLACED WITH A CUSTOMER SUPPLIED NEW NLG UPLOCK SWITCH IAW AMM 32-32-10 OPERATIONAL CHECKS PERFORMED WITH NO DEFECTS NOTED.