As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SFO - LEFT MAIN GEAR WARNING ON CLIMB-OUT. AIRCRAFT RETURNED TO STATION WITHOUT INCIDENT. MAINTENANCE REPLACED LANDING GEAR RELAY BOX. GEAR RETRACTION SYSTEM OPERATIONAL CHECK NORMAL. TEST FLIGHT SATISFACTORY. AIRCRAFT RETURNED TO SERVICE. (M)