What was found
STRINGER 27 FROM FS280 TO FS295 HAS SEVERAL AREAS OF CORROSION ON BOTTOM FLANGE. (C-CHECK RO 6/22/2021) CORROSION ON STGR 27 FROM FS280 TO FS295 FOUND TO BE OUT OF LIMITS REF. CRJ-900 SRM, 53-21-03-101-002-A04. REMOVED AND REPLACED STGR 27 FROM FS280 TO FS295 REF. CRJ-900 SRM, 51-42-06-001-001-A01, CRJ-900 SRM, 51-42-21-001-001-A01, AND DWG SH670-31630 REV K. COMPLIED WITH TASK CARD 51-900-1002-SKY, PRESSURE CHECKS GOOD.