What was found
PDX - C5 CHECK - SUSPECT CORROSION ON AVIONICS BAY INTERCOSTAL INBOARD AND OUTBOARD SIDES OF INTERCOSTAL AT STATION X201.15 AND STR 31P. REPAIRED IAW DHC8 200 CPM CHAPTER 4 PG 4-25 PARA 9B(6)(A), DHC8 200 NDTM PT-6 51-00-01, PT-1 51-00-04, AND DHC8 200 SRM 51-20-11, 51-20-16, 51-40-11, 51-20-36 AND 51-20-41.