What was found
AIRCRAFT OUT OF SERVICE FOR C8 S2 CHECK. MAIN CABIN FLOOR BEAM Y 254 HAS CORROSION AT FR 18. REMOVED CORROSION AT MAIN CABIN FLOOR BEAM Y 254, FR L8 IAW SRM 51-74-00, 6 B ORIGINAL THICKNESS .079 INCHES, REMOVED .022 INCHES FOUND TO BE WITHIN LIMITS IAW SRM 53-11-15, PBL01, FIG 104, SH L. REAPPLIED PROTECTIVE COATING.