What was found
FOUND 2 AREAS OF CORROSION ON VERTICAL STAB AFT SPAR LH CLIP. MECHANICALLY REMOVED CORROSION VERTICAL STAB LEFT AFT SPAR IN 2 AREAS. FOUND CORROSION BLENDS TO BE BEYOND LIMITS IAW CESSNA 680 SRM 51-70-02. REPAIRED LEVEL 2 CORROSION ON VERTICAL STAB AFT SPAR LH SIDE BETWEEN VFS 174.85 AND VFS 163.85 BY INSTALLING REPAIR ANGLE P/N 988614-001 PER AQRD ERO-116480, REV IR., TITLED "N317QS LH VERTICAL STABILIZER AFT SPAR CAP CORROSION", DATED APR 09, 2026. F&DT EVALUATION DUE DATE: MAR 26 2027 NOTE 1: THE FATIGUE AND DAMAGE TOLERANCE (F&DT) EVALUATION REQUIRED PER 14 CFR PART 25, 25.571 IS NOT INCLUDED AS PART OF THIS ENGINEERING DOCUMENT. PER NETJETS AVIATION, INC. GENERAL MAINTENANCE MANUAL CHAPTER 11 - THE F&DT EVALUATION MUST BE COMPLETED WITHIN 12 MONTHS FROM THE DATE OF ISSUE OF THE ASSOCIATED 8110-3. THE AIRCRAFT AT THE TIME OF REPAIR HAD 15,885.4 FLIGHT HOURS AND 10,738 FLIGHT CYCLES. (ALTERNATE TERMINATING ACTIONS TO THE F&DT EVALUATION REQUIREMENT MUST BE SEPARATELY APPROVED AND ARE NOT INCLUDED IN THIS ERO.)