What was found
DURING THE ACCOMPLISHMENT OF SI 7-58181-12AD, THE NR 1, 2, 3 AND 8 C-1A CARGO DOOR LATCH FITTINGS WERE FOUND WITH SURFACE CORROSION IN THE UPPER WELL. ALSO, DRAIN HOLES IN THE CENTER OF THE LOWER WEB WERE ADDED FOR ALL 8 OF THE SUBJECT FITTINGS. THE SURFACE CORROSION WILL BE BLENDED OUT ON FITTINGS NR 1, 2, 3 AND 8. FITTINGS NR 4, 5, 6, 7 WILL HAVE DRAIN HOLES MACHINED. THE SUBJECT FITTINGS ARE MACHINED FROM 4330M STEEL HEAT TREATED TO THE 220-240 KSI CONDITION. REPAIR APPROVAL PER DL ERA 272151-14AD.