What was found
UPON REMOVAL OF STUCK SHANK UNDER PANEL 672DT FOUND 4EA OBLONG HOLES ON RH WINGLET FAIRING MOUNT. (C-CHECK RO 8/18/2021) REMOVED AND REPLACED RIB PN CC690-15110-4S WITH A NEW ONE IAW CRJ900 SRM 51-42-13-001-001-A01, CRJ900 SRM 51-42-21-001-001-A01, CRJ-900 SRM 51-42-22-001-001-A01, REO 690-57-31-187 REV-- DATED 2021-07-25 AND DWG CC690-15010 REV D / COMPLIED WITH SKYCARD 51-900-1002-SKY