# SDR SWIA200211200

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 29, 2002
- Submitted: September 9, 2002
- Operation: Air carrier
- Aircraft: N565SW
- Make and model: Emb EMB-120ER
- Registry model: [EMB EMB-120ER](https://openairdocs.org/model/embraer-emb-120er) (OpenAirDocs)
- Aircraft serial: 120340
- Aircraft time: 9,880 hours, 14,772 cycles
- System (JASC): [3452 · ATC Transponder System](https://openairdocs.org/jasc/3452)
- Part: Control Head
- Part number: 6226523205
- Condition: Malfunctioned
- Location: Transponder
- 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/SWIA200211200

## Discrepancy

AFTER TAKEOFF, ATC REPORTS NO TRANSPONDER REPORTING.  TRIED BOTH ONE AND TWO TRANSPONDERS, NEITHER WORKED.  RETURNED TO LAX.  REPLACED TRANSPONDER CONTROL HEAD.  TESTED WITH TEST BOX.  OPS CHECKS GOOD.

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