# SDR 9JLA2020120923620

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 7, 2020
- Submitted: December 9, 2020
- Operation: Air carrier
- Aircraft: N827JN
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5605223
- Aircraft time: 2,542 hours, 2,106 cycles
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Switch
- Part number: D45C24
- Condition: Defective
- Location: Airspeed
- Stage of operation: LD
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9JLA2020120923620

## Discrepancy

THE FLIGHT CREW REPORTED AFTER LANDING THAT A STAB MISCOMPARE FAULT WAS DISPLACED.  THE MAINTENANCE VENDOR TROUBLESHOT AND DETERMINED THE AIRSPEED SWITCH WAS DEFECTIVE.  THE SWITCH WAS REPLACED AND A NEW SWITCH PART P/N D45C-24.  OPERATIONS CHECKS WERE SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE.

---
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.