What was found
UPPER AFT FUSELAGE CABIN, RT OTBD SEAT TRACK CORROSION LEVEL 2 NOTED AT THE AFT END, RBL 43.5, FR 74. SEAT TRACK FROM FR 61-FR 74, RBL 43.5 WAS REPLACED IAW ASRP BD500-A-J51-42-20-00AAA-078A-A AND DWG C01342701 REV-G. (LP 1755837 - AIRCRAFT WAS GROUNDED)