What was found
CORROSION AT FS 517.00 LOWER FRAME BETWEEN STRINGERS 26LH AND 24RH. (C-CHECK RO 4/20/2021) REMOVED CORRODED LOWER FRAMES AT FS517 L/H AND R/H, FABRICATED AND INSTALLED NEW LOWER FRAMES FOR FS517, L/H P/N SH670-33261-7 AND R/H P/N SH670-33210-5 IAW BOMBADIER DRAWING SH670-33210, CRJ700 SRM 51-21-16, 51-24-16, 51-24-36, 51-24-06, 51-31-00, 51-40-11 AND CRJ700 NDTM 51-20-006.