As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - UPON INSPECTION, FOUND CRACK IN APU PLENUM - BEHOND LIMITS. CUT OUT AFFECTED MATERIAL, PERFORMED NON DESTRUCTIVE TESTING OF AREA. NO CRACKS OR DEFECTS NOTED. REPAIRED AFFECTED AREA ACCORDING TO STRUCTRAL REPAIR MANUAL. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.