What was found
FOUND CORROSION ON MOUNTING FLANGES FOR PANEL 342AB. MECHANICALLY REMOVED CORROSION LOCATED WHERE 18 NUTPLATES WERE REMOVED ON INNER AND OUTER SIDE OF FLANGES ON PANEL 342AB ATTACHMENT BRACKETS (10 NUTPLATES ON LH SIDE AND 8 NUTPLATES ON RT SIDE) IAW 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 THICKNESS. REPAIRED LEVEL 2 CORROSION ON MOUNTING FLANGES FOR RUDDER FAIRING PANEL 342AB ON APU STINGER PER NETJETS AQRD RFTS-116383, REV 0.