What was found
UPPER AFT FUSELAGE CABIN, LT OTBD SEAT TRACK CORRODED, NOTED AT THE AFT END, LBL 43.5, FR 74. REPLACED THE AFT FUSELAGE CABIN LT OTBD SEAT TRACK IAW ASRP BD500-A-J51-42-20-00AAA-078A-A AND DWG C01342701, REV-G. (LP 1748894 - AIRCRAFT WAS GROUNDED)