As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LIFTOFF RECEIVED A LG AIR GND FAIL CAUTION. LG WOULD NOT RETRACT. RAM AOM 1 CHECKLIST. RETURNED, LANDING WAS NORMAL. LG AIR GND FAIL CAUTION EXTINGUISHED AFTER LANDING. DESCENT RATE ON LANDING WAS 100 FPM. FOUND NOSE WHEEL PROXIMITY SWITCH OFF NORMAL POSITION IAW AMM 32-63-02. FNC GOOD AFTER REPOSITIONING, FNC GOOD IAW ETN-EM-32-245.