As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 4079 - AFTER TAKEOFF, CREW REPORTED A 'RED' INTRANSIT LIGHT LT MAIN GEAR, AFTER GEAR WAS SELECTED 'UP'. AIRCRAFT RETURNED TO THE FIELD, LANDED WITHOUT FURTHER INCIDENT. PIT MX CLEANED AND LUBRICATED MLG 'UPLOCK' ROLLERS IAW MM 32-00-00 AND STD MX PRACTICES. GROUND CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE. (X)