# SDR BSYA2012013

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 9, 2012
- Submitted: March 29, 2012
- Operation: Air carrier
- Aircraft: [N525AA](https://openairdocs.org/aircraft/N525AA), registered now
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- Aircraft serial: 8052111
- Aircraft time: 15,292 hours
- System (JASC): [3452 · ATC Transponder System](https://openairdocs.org/jasc/3452)
- Part: Transponder
- Part number: 066106200
- Part serial: 122784
- Condition: Inoperative
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/BSYA2012013

## Discrepancy

AFTER TAKEOFF FROM TEB, PILOT WAS NOTIFIED BY ATC THAT HIS TRANSPONDER WAS NOT WORKING AND HAD HIM CIRCLE BACK AND LAND AT TEB WITHOUT INCIDENT.  AVIONICS REPLACED DEFECTIVE TRANSPONDER, OPERATIONAL CHECK NORMAL.

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