# SDR HEEA083474

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 10, 2003
- Submitted: January 14, 2003
- Operation: Air carrier
- Aircraft: N6559Z
- Make and model: Bell 412
- Registry model: [Bell 412](https://openairdocs.org/model/bell-412) (OpenAirDocs)
- Aircraft serial: 36019
- Aircraft time: 10,407 hours
- System (JASC): [3452 · ATC Transponder System](https://openairdocs.org/jasc/3452)
- Part: Transponder
- Part number: 066107100
- Part serial: 5338
- Condition: Erratic
- Location: Atc System
- 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/HEEA083474

## Discrepancy

ATC TRANSMITS ERRATIC AND INTERROGATION PULSES WILL NOT NULL OUT. IN SHOP REPAIR.

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