# SDR 2026F00079

- 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: Doubler
- Condition: Corroded
- Location: Zone 100
- 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/2026F00079

## Discrepancy

LH LOWER FUSELAGE CARRY-THROUGH DOUBLER UNDER BAGGAGE FLOOR IS CORRODED. MECHANICALLY REMOVED CORROSION LOCATED ON ELECTRICAL CARRY THROUGH DOUBLER ON THE LH SIDE UNDER THE BAGGAGE FLOOR 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 SKIN THICKNESS. REPAIRED LH LOWER FUSELAGE CARRY-THROUGH CORROSION PER NETJETS RFTS-116584 REV. 0, TITLED: "N339QS (680-0191) LH LOWER FUSELAGE CARRY THROUGH CORROSION", DATED 28MAR26.

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