As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING AIR/GND FAILED, GEAR WOULD NOT COME UP AFTER TAKEOFF. FOUND NLG WOW PROXIMITY SWITCH FAILED ON CMC AND TROUBLESHOT IAW FIM 32-63-00-810-802. REMOVED AND REPLACED THE NLG WOW PROXIMITY SWITCH IAW AMM 32-63-02. PERFORMED EXTENSION AND RETRACTION OF GEAR SEVERAL TIMES IAW AMM 32-30-00. OPS CHECKED GOOD.