As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT MAIN GEAR RED LIGHT WAS SLOW TO EXTINGUISH AFTER TAKEOFF. ASSOCIATED OAP MESSAGE AUTO SPOILER FAIL. QRH PROCEDURE FOR AUTOSPOILER FAIL MESSAGE DID NOT EXTINGUISH MESSAGE. RETURN SLC AS DIRECTED BY COMPANY. CHECKED NOSE GEAR PROX SENSORS WIRES AND TARGETS ALL CK GOOD REPLACED PROX ELECTRONICS UNIT PER M/M. REPLACED BOTH NOSE PROX SENSORS D1-32 D1-31 SWUNG GEAR PER M/M ALL OPS NML.