# SDR 2026F00048

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 31, 2026
- Submitted: March 31, 2026
- Operation: General aviation
- Aircraft: [N339QS](https://openairdocs.org/aircraft/N339QS), registered now
- Make and model: Cessna 680CE
- Aircraft serial: 6800191
- Aircraft time: 14,278 hours, 9,522 cycles
- System (JASC): [5711 · Wing Spar](https://openairdocs.org/jasc/5711)
- Part: Spar
- Condition: Corroded
- Location: Zone 500
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026F00048

## Discrepancy

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.

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