# SDR COEA2017032603805

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 26, 2017
- Submitted: March 28, 2017
- Operation: Air carrier
- Aircraft: N805HC
- Make and model: Aerosp ATR42-500
- Registry model: [Aerosp ATR42-500](https://openairdocs.org/model/aerospatiale-alenia-atr42-500) (OpenAirDocs)
- Aircraft serial: 625
- Aircraft time: 22,730 hours, 26,993 cycles
- System (JASC): [6120 · Propeller Controlling System](https://openairdocs.org/jasc/6120)
- Part: Module
- Part number: C1464402
- Part serial: 340
- Condition: Failed
- Location: Propeller
- Stage of operation: CL
- 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/COEA2017032603805

## Discrepancy

DURING CLIMB, THE CREW RECEIVED A NR 2 SINGLE CHANNEL CAUTION.   CREW ELECTED TO RETURN TO DEPARTURE.  NO EMERGENCY DECLARED. AIRCRAFT LANDED WITHOUT FURTHER INCIDENT.   MAINTENACE REPLACED THE PROPELLER VALVE MODULE. OPS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.

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