What was found
FOUND #5 SPEED BRAKE HYDRAULIC RETRACT CARRY THRU HAS CORROSION AROUND IT ON LH WING AFT SPAR. MECHANICALLY REMOVED CORROSION LOCATED WHERE #5 SPEED BRAKE RETRACT LINE FITTING IS LOCATED ON LH WING, AFT SPAR, AFT FACE IN FLAP COVE 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 THICKNESS. REPAIRED CORROSION BLEND IAW NETJETS AQRD RFTS-116437 REV.0, TITLE: N339QS (680-0191) LH WING AFT SPAR WEB CORROSION DATE: 05MAR26.