# SDR UALA2012011100245

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 11, 2012
- Submitted: January 26, 2012
- Operation: Air carrier
- Aircraft: N547UA
- Make and model: Boeing 757222
- Aircraft serial: 25368
- Aircraft time: 75,176 hours, 21,930 cycles
- Engine: Pwa PW2037
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pressure Switch
- Condition: Failed
- Location: Hyd Pump
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012011100245

## Discrepancy

AC MOTOR PUMP, WITH HYDRAULIC PUMP OFF. LOW PRESSURE LIGHT DID NOT ILLUMINATE OR EICAS MESSAGE DISPLAY,  CENTER PUMP NUMBER 1.  EICAS MESSAGE DISPLAYS CORRECTLY.  REPLACED LOW PRESSURE SWITCH.

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