# SDR 2VKA20180707001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 7, 2018
- Submitted: July 7, 2018
- Operation: Air carrier
- Aircraft: [N820SF](https://openairdocs.org/aircraft/N820SF), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53279
- Aircraft time: 8,582 hours, 29,632 cycles
- System (JASC): [2497 · Electrical Power System Wiring](https://openairdocs.org/jasc/2497)
- Part: Wire
- Condition: Chafed
- Location: Zone 200
- Stage of operation: AA
- How discovered: O
- Nature of condition: B, K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2VKA20180707001

## Discrepancy

PILOT LOST HYDRAULIC PRESSURE IN FLIGHT.  A WIRE WAS FOUND CHAFING ON THE HYDRAULIC RETURN LINE FROM THE TAIL ROTOR ACTUATOR.  THE WIRE WAS CHAFED THROUGH THE INSULATION AND WAS ARCING ON THE HYDRAULIC LINE CREATING A HOLE IN THE LINE CAUSING LOSS OF FLUID.

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