# SDR 2025F00174

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 6, 2025
- Submitted: August 6, 2025
- Operation: General aviation
- Aircraft: [N396QS](https://openairdocs.org/aircraft/N396QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 6800240
- Aircraft time: 14,744 hours, 9,636 cycles
- System (JASC): [5711 · Wing Spar](https://openairdocs.org/jasc/5711)
- Part: Spar
- Condition: Corroded
- Location: Zone 600
- 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/2025F00174

## Discrepancy

RH WING AFT SPAR HAS 1 AREA OF CORROSION AROUND HI-LOK ON LOWER CLIP BEHIND PANEL 720DR. MECHANICALLY REMOVED CORROSION FROM RH WING AFT SPAR. FOUND CORROSION BLENDS TO BE BEYOND LIMITS IAW C680 SRM 51-70-02 EXCEEDING .002" OF MATERIAL REMOVED FROM NOMINAL THICKNESS. SUBMITTED TO NJA ENGINEERING FOR REPAIR. REPAIRED AREA PER NJA ENGINEERING RFTS-114590, REV 0, TITLE:N396QS (680-0240) RH WING AFT SPAR CORROSION, DATED: 08/04/2025.

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