What was found
CORROSION BTW FS=904.00 TO FS=927.00 AND BTW STGR=26LH TO STGR=26RH AT EXTERNAL FUSELAGE SKIN. DOUBLER AND TRIPLER BTW FS=904.00 TO FS=927.00 AND BTW STGR=26LH TO STGR=26RH AT EXTERNAL FUSELAGE SKIN WERE REPLACED PER REO 670-53-00-0290 REV -F AND CRJ900 SRM 51-42-21-001-001-A01 AND IN COMPLEMENT WIP #5 TO WIP #15 STEPS WERE PERFORMED PER GEREO 670-53-00-0290 REV -F AND DWG 670-53-00-290 REV-E AND PART LIST 670-53-00-290 REV-E. SHEET 4,7,8. PART DASH OR IDENTIFYNG NO -33 TO -36