What was found
INSPECTION TYPE-C, SKIN CORRODED BELOW C2 DOOR, STA 520 TO 540, LONGERON 33R. CUT OUT DAMAGE AREA, INSTALLED REPAIR DOUBLER AT STA 520 TO 540, LONGERON 31R TO 35R, IAW SRM 51-1-20, 51-1-21 AND DHC SK-806-705 REF UPS E0 DC8-5330-9022-A.