As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON GEAR EXTENTION INTO TOL, LEFT GEAR INDICATION LIGHT ILLUMINATED IMMEDIATELY. ALL GEAR LIGHTS ILLUMINATED WITH GEAR UNSAFE LIGHT. GEAR WAS CYCLED, EXTENTION WAS NORMAL EXCEPT LEFT GEAR LIGHT CAME ON IMMEDIATELY. MAINTENANCE FOUND LEFT GEAR DOWNLOCK SWITCH DIRTY. THE SWITCH WAS CLEANED. INDICATION SYSTEM OPERATIONALLY CHECKED GOOD IAW MM 32-60-06. (M)