# SDR NSVA2010153

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 2, 2010
- Submitted: September 2, 2010
- Operation: Air carrier
- Aircraft: N249CJ
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 249
- Aircraft time: 42,110 hours, 38,448 cycles
- System (JASC): [3452 · ATC Transponder System](https://openairdocs.org/jasc/3452)
- Part: Control Head
- Condition: Defective
- Location: Atc
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/NSVA2010153

## Discrepancy

RETURNED TO GATE DUE TO DUAL TRANSPONDER FAILURE.  REPLACED ATC CONTROL HEAD.

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