As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - THE LT MLG WOULD NOT EXTEND, RECYCLED THE LANDING GEAR AND GOT A DOWN AND LOCKED INDICATION AFTER APPROX 15 TO 20 SECONDS. COMPLIED WITH GEAR SWINGS AND FOUND THE LT MLG I/B CAM NEEDED REWORK. REWORKED THE I/B CAM AND COMPLIED WITH GEAR SWINGS. AIRCRAFT RETURNED TO SERVICE.