As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX C4 CHECK ZONE 144 SUBFLOOR IS CORRODED AT Y565 AND Y25L-Y27L. REMOVED CORROSION IAW CPM CHAP 4. REMOVED .002 MATERIAL FROM ORIGINAL THICKNESS, .043 MATERIAL REMAINING WITHIN LIMITS IAW -8 200 SRM 51-20-11 STEP 3. HFEC INSP. IAW -8 200 NDTM PT 6, 51-00-01 NO CRACKS NOTED. ALODINED PRIMED PAINTED IAW -8 200 SRM 51-20-16, 51-20-36 PG 6 PARA F(1) AND 51-20-26 PG 8 PARA B(1-6).