What was found
IN PASSENGER COMPARTMENT ON RBL 42.00, BETWEEN FS 280.0 0 - 310.00, THE FLOOR SILL HAS FILIFORM CORROSION. R & R RT CABIN FLOOR SILL, PN SH670-3172-9 & ATTACH ANGLE, PN SH670-31580-1 IAW SRM 51-42-06-001-001-A01, 51-42-13-001-001-A01 & 51-42-21-001-001-A01. REFERENCE OP 173.