# SDR CA051017001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 11, 2005
- Submitted: November 1, 2005
- Operation: General aviation
- Make and model: Aerosp ATR 42-300
- Registry model: [Aerosp ATR 42-300](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-300) (OpenAirDocs)
- Aircraft time: 32,575 hours
- Engine: Pwa PW120
- Propeller: Hamstd 14SF5
- System (JASC): [2434 · DC Generator-Alternator](https://openairdocs.org/jasc/2434)
- Part: Sensor
- Part number: 1030032
- Part serial: 1233
- Condition: Malfunctioned
- Location: Hall Effect
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA051017001

## Discrepancy

THE NR 2 DC GENERATING SYSTEM WENT OFF LINE AFTER DEPARTING YFB.  THE AIRCAFT RETURNED TO POINT OF DEPARTURE WHERE MAINTENANCE DETERMINED THE NR 2 HALL EFFECT SENSOR HAD FAILED.  THE SENSOR WAS REPLACED AND THE AIRCRAFT RETURNED TO SERVICE.

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