# SDR P5CA2015090700132

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 6, 2015
- Submitted: September 8, 2015
- Operation: Air carrier
- Aircraft: [N851GT](https://openairdocs.org/aircraft/N851GT), registered now
- Make and model: Boeing 747-87UF
- Registry model: [Boeing 747-87UF](https://openairdocs.org/model/boeing-747-87uf) (OpenAirDocs)
- Aircraft serial: 37565
- Aircraft time: 12,769 hours, 2,284 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 972952
- Part serial: MX745481
- Condition: Leaking
- Location: Hyd System
- Part time: 11,122 hours, 2,019 cycles
- Stage of operation: CL
- 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/P5CA2015090700132

## Discrepancy

NR 4 HYDRAULIC SYSTEM FAILED APPROACHING LEVEL AT 11,000 FT.  ACCOMPLISHED CHECKLIST. SHUTDOWN NR 4  ENGINE DRIVEN PUMP.  FOUND NR 4 EDP LEAKING FROM PRESSURE SENSOR AND CASE DRAIN.  TRANSFER TO MDDR 59865, MEL 29-11-01-02B.  PUMP REMOVED AND PLATE INSTALLED IAW AMM 29-11-15 AND DDG PROCEDURES.

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