# SDR 2026F00044

- 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 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 6800191
- Aircraft time: 14,278 hours, 9,522 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Door Frame
- Condition: Corroded
- Location: Zone 200
- 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/2026F00044

## Discrepancy

FOUND 1 AREA OF CORROSION AROUND AIRCRAFT DATA PLATE. REPAIRED CORROSION ON AFT TAIL CONE UNDER DATA TAG IN REFERENCE TO AEROSPACE QUALITY RESEARCH AND DEVELOPMENT ENGINEERING REPAIR ORDER: ERO-988391 REV. IR; TITLED: N339QS AFT TAILCONE SKIN CORROSION; DATED: MAR 16, 2026. REPAIR SUPPORTED BY FORM: FAA FORM 8110-3 TITLED "N339QS AFT TAILCONE SKIN CORROSION", DATED 3/16/2026. THE FATIGUE AND DAMAGE TOLERANCE (F&DT) EVALUATION REQUIRED PER 14 CFR PART 25, 25.571 IS NOT INCLUDED AS PART OF THIS ENGINEERING DOCUMENT. PER NETJETS AVIATION, INC. GENERAL MAINTENANCE MANUAL CHAPTER 11- THE F&DT EVALUATION MUST BE COMPLETED WITHIN 12 MONTHS FROM THE DATE OF ISSUE OF THE ASSOCIATED 8110-3. THE AIRCRAFT AT THE TIME OF REPAIR HAD 14,277.7 FLIGHT HOURS AND 9,522 FLIGHT CYCLES.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.