# SDR SWAA2017070314723

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 2017
- Submitted: July 3, 2017
- Operation: Air carrier
- Aircraft: [N757LV](https://openairdocs.org/aircraft/N757LV), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29850
- Aircraft time: 63,155 hours, 36,546 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: O-Ring
- Part number: NAS16128
- Condition: Failed
- Location: Hyd Transmitter
- Stage of operation: DE
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2017070314723

## Discrepancy

NR 1 ENGINE, HYDRAULIC PUMP LOW PRESSURE LIGHT ILLUMINATED.  HYDRAULIC QUANTITY INDICATED AS LOW AS 7%.   FOUND A BROKEN O-RING ON PRESSURE TRANSMITTER.  R & R THE O-RING IAW AMM.

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