What was found
PDX - BOX BEAM ABOVE LEFT-HAND AFT EMERGENCY EXIT APERTURE HAS TOOLING MARK 9 INCHES AFT OF FRAME 11083. REPAIRED IAW HORIZON AIR EA 4-53-691.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PDX - BOX BEAM ABOVE LEFT-HAND AFT EMERGENCY EXIT APERTURE HAS TOOLING MARK 9 INCHES AFT OF FRAME 11083. REPAIRED IAW HORIZON AIR EA 4-53-691.