# SDR 2017FA0000308

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 2, 2017
- Submitted: August 2, 2017
- Operation: General aviation
- Aircraft: [N273SF](https://openairdocs.org/aircraft/N273SF), registered now
- Make and model: Gulstm GIV
- Aircraft serial: 1346
- System (JASC): [3445 · Air Collision Avoidance System](https://openairdocs.org/jasc/3445)
- Part: Computer
- Part number: 751790055002
- Part serial: 00053482
- Condition: Inoperative
- Location: Tcas
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2017FA0000308

## Discrepancy

INTERMITTENT FAILURE OF THE TCAS COMPUTER.   A REPLACEMENT UNIT WAS WAS INSTALLED AND TESTED SATISFACTORILY.  THE ACFT SUBSEQUENTLY DEPARTED.  THE OPERATOR HAS SINCE REPORTED THAT THE TCAS SYSTEM IS INOPERATIVE.

---
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.