What was found
LH LOWER FUSELAGE CARRY-THROUGH DOUBLER UNDER BAGGAGE FLOOR IS CORRODED. MECHANICALLY REMOVED CORROSION LOCATED ON ELECTRICAL CARRY THROUGH DOUBLER ON THE LH SIDE UNDER THE BAGGAGE FLOOR IAW CESSNA 680 SRM 51-70-02. FOUND CORROSION BLENDS TO BE BEYOND LIMITS IAW CESSNA 680 SRM 51-70-02 EXCEEDING .002" OF MATERIAL REMOVED FROM NOMINAL SKIN THICKNESS. REPAIRED LH LOWER FUSELAGE CARRY-THROUGH CORROSION PER NETJETS RFTS-116584 REV. 0, TITLED: "N339QS (680-0191) LH LOWER FUSELAGE CARRY THROUGH CORROSION", DATED 28MAR26.