As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER T/O FROM MEM AT GEAR RETRACTION, THE L/MAIN GEAR RED LIGHT WOULD NOT EXTINGUISH. CHECKLIST PROCEDURE ACCOMPLISHED. ALL GREEN ALL GEAR DOOR LIGHTS AND THE NOSE AND R/MAIN RED LIGHT EXTINGUISHED. THE L/MAIN RED LIGHT STILL WOULD NOT EXTINGUISH. FLT CONTINUED PER CHECKLIST PAGE 2-6-20. REPLACED LANDING GEAR ACCESSORY UNIT AND TESTED GOOD PER MM 32-09-121 PG 501.