As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX- ON APPROACH TO LANDING IN PDX LANDING GEAR INDICATED ONLY RED LIGHTS. ATTEMPTED TO EXTEND GEAR THREE MORE TIMES WITHOUT SUCCESS. PERFORMED ALTERNATE GEAR EXTENSION ON FOURTH ATTEMPT AND RECEIVED THREE GREEN AND THREE AMBER GEAR DOOR LIGHTS. AIRCRAFT LANDED WITHOUT INCIDENT. REMOVED AND REPLACED PSEU. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.