As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LG AIR/GND FAIL CAUTION MESSAGE DURING TAKEOFF LANDING GEAR LEVER LOCKED INTO DOWN POSITION AND GEAR WOULD NOT RETRACT. ALL INDICATIONS INDICATED DOWN AND LOCKED. RESTORED LATERAL PLAY IN NLG TRUNNION REPLACED NLG WOW PROX SENSOR AND HARNESS. REF NRWC 942-ORD-04796 THUR 942-ORD-04804 FOR WORK PREFORMED. REF LOG PAGE 4667438 ITEM NR 1 FOR FCF.