As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SFO - LEFT MAIN LANDING GEAR RED INTRANSIT LIGHT REMAINS ILLUMINATED FOLLOWING GEAR RETRACTION. MAINTENANCE ADJUSTED AND RESECURED LEFT MAIN LANDING GEAR MICRO-SWITCH. GEAR INDICATION SYSTEM OPERATIONAL CHECK NORMAL ON GROUND. AIRCRAFT RETURNED TO SERVICE. (M)