# SDR 9903896624

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 15, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N624US](https://openairdocs.org/aircraft/N624US), registered now
- Make and model: Boeing 747251B
- Aircraft serial: 21706
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 887673
- Condition: Leaking
- Location: Nr 4 Engine
- Stage of operation: CR
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9903896624

## Discrepancy

DURING CRUISE, THE NR 4 HYDRAULIC SYSTEM QUANTITY DECREASED.  AIRCRAFT DIVERTED TO ANC AND LANDED WITHOUT INCIDENT.  REPLACED THE NR 4 ENGINE DRIVEN HYDRAULIC PUMP, OPERATIONAL CHECK GOOD.

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