What was found
* FRAME UNDER AFT WING TO FUSELAGE FAIRING AT FS969.00 BETWEEN APROX. STR.25L AND STR.25R CORRODED IN MULTIPLE SPOTS (FLAGGED). (C-CHECK RO 7/20/2021) AFT-WING-TO-FUSELAGE SUPPORT STRUCTURE FRAME FLAGGED IS AT FS939. NO FAIRING SUPPORT STRUCTURE EXISTS AT FS969 REF CRJ700 SRM 53-82-55-001-002-A01. REMOVED CORROSION ON AFT-WING-TO-FUSELAGE SUPPORT STRUCTURE FRAME FS939 REF CRJ700 SRM 51-21-06-001-001-A01. ORIGINAL MATERIAL THICKNESS IS .050" REF CRJ700 SRM 53-82-55-001-002-A01. MINIMUM REMAINING THICKNESS .032". DEPTH REMOVED .018". MINIMUM ALLOWED .045" REF CRJ700 SRM 53-82-55-101-002-A01. MATERIAL IS OUT OF LIMITS. ORDERED AND RECEIVED 1EA. BRACKET SUB ASSEMBLY PART# SH670-39265-6 AND 1EA. BRACKET SUB ASSEMBLY PART# SH670-39265-5 AND 1EA. SPLICE ANGLE PART# SH670-39189-1. ORDERED AND RECEIVED REPLACEMENT FASTENERS AND INSTALLED 2EA. REPLACEMENT BRACKET SUB-ASSEMBLIES AND SPLICE ANGLE FS 939 STRG. 25L TO 25R WITH REPLACEMENT FASTENERS REF CRJ700 SRM 51-42-06-001-001-A01. SEE CONTINUATION CARD FOR DETAILS.