As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON ANGLE SUPPORT UPPER AND LOWER FACE LBL 50 TO LBL 70 REAR SPAR AREA LH MLG. ANGLE SUPPORT UPPER AND LOWER FACE LBL 50 TO LBL 70 REAR SPAR AREA LH MLG WAS EVALUATED OUT OF LIMITS PER CRJ900 SRM 54-00-00-101-001-A01 AND REPLACED PER CRJ900 SRM 51-42-21-001-001-A01.