# SDR CA110428017

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 27, 2011
- Submitted: September 9, 2011
- Operation: Air carrier
- Make and model: Snias AS350BA
- Engine: Tmeca ARRIEL1B
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Coupling
- Part number: S40AS
- Condition: Failed
- Location: Hydraulic Pump
- Component: Hydraulic Pump
- Component part number: 350A35013100
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA110428017

## Discrepancy

THE MAIN COUPLING THAT DRIVES THE HYD PUMP HAD FAILED. THERE WAS NO LOSS OF HYD POWER YET AS THE RUBBER COUPLING HAD LODGED ITSELF IN SUCH A WAY THAT IT COULD STILL DRIVE THE PUMP.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.