What was found
THE AFT WING TO FUSELAGE FAIRING SUPPORT STRUCTURES LT FRAME AND RT FRAME AT FS 939 HAVE MULTIPLE SPOTS OF CORROSION AROUND BL 0.0. C-CHECK RO 12/14/2020. REMOVED CORROSION ON AFT WING TO FUSELAGE FAIRING SUPPORT STRUCTURE LT AND RT FRAME AT FS 939, REF CRJ 700 SRM. LT FRAME (WEB) FOUND TO BE WITHIN LIMITS AND RT FRAME (WEB) FOUND TO BE OUT OF LIMITS. REMOVED AND INSTALLED NEW RT AFT WING TO BODY FAIRING SUPPORT STRUCTURE FRAME (WEB) AT FS 939.00, REF CRJ-700 SRM.