As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX- RIGHT HAND VERTICAL BEAM BETWEEN REAR PRESSURE BULKHEAD AND FRAME 18075 IS CHAFED JUST AFT OF FORWARD APU ENCLOSURE. VERTICAL LEG OF REPAIR ANGLE DOES NOT HAVE THE THICKNESS CALLED OUT FOR IN EA 4-53-1313 STEP 2. REPAIRED IAW HORIZON AIR EA 4-53-1324.