As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - AFTER GEAR RETRACTION, LEFT MLG DOOR LIGHT REMAINED ON. FLIGHT CONTINUED TO PDX WHERE LIGHT EXTINGUISHED WHEN GEAR COMPLETED EXTENSION CYCLE. FLIGHT LANDED WITHOUT INCIDENT. FOUND NR 1 MLG DOOR UPSTOP BACKED OUT BECAUSE RETAINING PIN HAD BROKEN. RE-RIGGED STOP AND INSTALLED NEW PIN. GROUND TESTS COMPLETED AND AIRCRAFT RELEASED FOR SERVICE.