# SDR 2026F00046

- 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): [5530 · Vertical Stabilizer](https://openairdocs.org/jasc/5530)
- Part: Mount
- Condition: Corroded
- Location: Zone 300
- 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/2026F00046

## Discrepancy

FOUND CORROSION ON MOUNTING FLANGES FOR PANEL 342AB. MECHANICALLY REMOVED CORROSION LOCATED WHERE 18 NUTPLATES WERE REMOVED ON INNER AND OUTER SIDE OF FLANGES ON PANEL 342AB ATTACHMENT BRACKETS (10 NUTPLATES ON LH SIDE AND 8 NUTPLATES ON RT SIDE) IAW 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 LEVEL 2 CORROSION ON MOUNTING FLANGES FOR RUDDER FAIRING PANEL 342AB ON APU STINGER PER NETJETS AQRD RFTS-116383, REV 0.

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