What was found
FRAME AT FS319.70 SHOWS INTERGRANULAR CORROSION AT STGR21L. (C CHECK RO 1/18/2022) REMOVED AND REPLACED CORRODED FRAME AT FS319.70 BETWEEN STGR'S 18L AND 21L WITH NEW REPLACEMENT FRAME (P/N SH670-31891-3) WITH NEW FASTENERS. REF BOMBARDIER DWG # SH670-31810 REV Y AND CRJ700 SRM'S 51-42-06-001-001 A01 AND 51-42-21-001-001 A01. ALL CHECKS GOOD. / SKYCARD 51-900-1002-SKY COMPLIED WITH.