# SDR CA101018015

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 14, 2010
- Submitted: March 15, 2011
- Operation: Air carrier
- Make and model: Snias AS350B3
- Aircraft time: 4,732 hours
- Engine: Tmeca ARRIEL2B
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 704A33635002
- Condition: Worn
- Location: Hyd System
- Stage of operation: HO
- How discovered: O
- Nature of condition: F, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA101018015

## Discrepancy

IN FLIGHT, HYD SYS FAILURE DUE TO DAMAGED SPLINES ON HYD PUMP, PN-704A34310006 AND DRIVE COUPLING, PN-704A33635002.  SPLINES FOUND TO BE SEVERLY WORN AND UNABLE TO ENGAGE FOR PUMP OPERATION.  UNSURE OF REASONING FOR SPLINE FAILURE AT THIS POINT.

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