What was found
SJO - DURING C-CHECK, IN THE PASSENGER CABIN, AFT LAVATORY AREA, BS 1016, BETWEEN RBL 38 INCH AND LBL 38 INCH, FLOORBEAM WAS FOUND CORRODED. REPAIRED FLOORBEAM UPPER CHORD AT BS 1016, BETWEEN LBL 41 INCH AND RBL 41 INCH PER COOPESA EO COO-3-53-224-99, DATED APR 8, 1999. (M)