What was found
MULTIPLE SPOTS OF CORROSION FOUND UNDER CABIN FLOOR PANEL. FOUND CORROSION ON SHEAR WEB ASSEMBLIES, NO ALLOWABLE DAMAGE FOR SHEAR WEB FLOOR STRUCTURE PER SRM 53-71-11-01A. RECEIVED NEW SHEAR WEBS AND SUPPORT ANGLES (FABRICATED BY CUSTOMER ON P.O. XF8209. LOCATED, DRILLED AND ASSEMBLED REPLACEMENT SHEAR WEBS TO MAKE REPLACEMENT SHEAR WEB ASSEMBLIES. INSTALLED SHEAR WEB ASSEMBLIES AT BS 1030-1041 RBL31 - LBL 31 WL 208 (UNDER CABIN FLOOR PANEL P/N 147A5810-421. ALL WORK PER SRM 51-40-02-0G AND BOEING DWG 147A5701 SHT 21. (1878775) AIRCRAFT WAS GROUNDED