# SDR 9722126306

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 24, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N666US
- Make and model: Boeing 747451
- Aircraft serial: 23821
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Condition: Failed
- Location: Nr 1 Engine
- Stage of operation: CR
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9722126306

## Discrepancy

DURING CRUISE, THE NR 1 ENGINE DRIVEN HYDRAULIC PUMP AND THE AIR DRIVEN HYDRAULIC PUMP FAILED.  AIRCRAFT DIVERTED TO ANC AND LANDED WITHOUT INCIDENT.  REPLACED THE NR 1 ENGINE DRIVEN AND AIR DRIVEN HYDRAULIC PUMPS.  OPERATIONAL CHECK GOOD.

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