# SDR 2026F00085

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2026
- Submitted: April 23, 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): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- Part number: 69210103
- Condition: Corroded
- Location: Zone
- 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/2026F00085

## Discrepancy

CORROSION FOUND ON SKID RAIL UPPER LH SUPPORT LOWER LH SUPPORT AND LOWER RH SUPPORT,  MECHANICALLY REMOVED CORROSION LOCATED WHERE 21  NUTPLATES ARE LOCATED ON SKID RAIL UPPER LH SUPPORT P/N 6921010-3, LOWER LH SUPPORT P/N  6921010-5, AND LOWER RH SUPPORT P/N 6921010-6 IAW CESSNA 680 SRM 51-70-02.  FOUND CORROSION BLENDS TO BE OUT OF LIMITS IAW CESSNA 680 SRM 51-70-02 EXCEEDING .002" OF MATERIAL REMOVED FROM NOMINAL THICKNESS. REPAIRED SKID RAIL PANEL LAND CORROSION PER NETJETS AQRD RFTS-116580 REV. 0, TITLED: "N339QS (680-0191) SKID RAIL CORROSION", DATED 28 MAR 26.

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