What was found
CORROSION (C53-111-01-1) ON UNDERSIDE OF FLOOR TO SIDEWALL SUPPORT PLATE BS 720D TO BS 720C, LBL 25, WL 155. CORROSION REMOVED AROUND NUTPLATES ON SIDEWALL SUPPORT PLATE BS 720D TO BS 720C, LBL 25, WL 155. IN FOUR PLACES, 1.50 INCH BY 1.50 INCH BY .004 INCH FROM ORGINAL THICKNESS OF .063 INCH, FOUND TO BE WITHIN LIMITS. CLEANED AND TREATED PER SRM 51-10.