What was found
PDX C4 WEB HAS NUMEROUS AREAS OF CORROSION AROUND RIVET HEADS JUST AFT OF FRAME 510 AT STRINGER 23. REPAIRED IAW DHC-8-200 SRM 51-20-11, 51-40-00 AND 51-40-11.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PDX C4 WEB HAS NUMEROUS AREAS OF CORROSION AROUND RIVET HEADS JUST AFT OF FRAME 510 AT STRINGER 23. REPAIRED IAW DHC-8-200 SRM 51-20-11, 51-40-00 AND 51-40-11.