What was found
DURING C2 + 6 YEAR (HCK) CHECK IN MSP, MAINTENANCE FOUND CORROSION COMMON TO THE AFT FUSELAGE FLOOR LAV E SUPPORT AT FR79, LBL 23. REMOVED DAMAGED PARTS, TRIMMED AFT TAB OF FLOOW BEAM AT FR 79 PER BD500-A-J51-01-08-01AAA-353A-A, MANUFACTURED AND INSTALLED FLOOR SUPPORT PART PER ER/A 633268-14. (LP 1534978 - AIRCRAFT WAS GROUNDED).