What was found
SEA - AIRCRAFT RETURNED TO FIELD AFTER TAKEOFF, THE RIGHT MAIN GEAR INDICATED RED AFTER RETRACTION. AIRCRAFT DOWN FOR MAINTENANCE AND INSPECTION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
SEA - AIRCRAFT RETURNED TO FIELD AFTER TAKEOFF, THE RIGHT MAIN GEAR INDICATED RED AFTER RETRACTION. AIRCRAFT DOWN FOR MAINTENANCE AND INSPECTION.