What was found
FOUND DURING C-CHECK, THE L/E PANEL 511BL HAS THE 4TH RIB AT LOWER END CRACKED. MAINTENANCE REMOVED DAMAGED SECTION OF RIB IAW SAAB 340 SRM 57-10-30 NDT PERF FVNDT006EC NO CRACKS NOTED. MAINTENANCE FABRICATED, LOCATED, DRILLED AND TRIMMED AND INSTALLED REPAIR DOUBLER IAW SAAB 340 SRM 57-10-30.