# SDR 0004231141

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 9, 2000
- Submitted: November 16, 2000
- Operation: Air carrier
- Aircraft: [N141US](https://openairdocs.org/aircraft/N141US), registered now
- Make and model: Doug DC-10-40
- Registry model: [Doug DC-10-40](https://openairdocs.org/model/douglas-dc-10-40) (OpenAirDocs)
- Aircraft serial: 46750
- Aircraft time: 78,449 hours, 28,327 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: MX564794
- Part serial: 64794
- Condition: Failed
- Location: Hydraulic System
- Part time: 14,228 hours, 3,384 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/0004231141

## Discrepancy

DURING CRUISE, NR 1 SYSTEM HYDRAULIC QUANTITY DECREASED.  FOLLOWED COM PROCEDURE, DEPRESSURIZED AND ISOLATED NR 1 SYSTEM.  QUANTITY STABILIZED AT 3.5 GALLONS.  UPON APPROACH TO HNL, RESTARTED NR 1 SYSTEM AND QUANTITY WENT TO ZERO.  REQUESTED EMERGENCY EQUIPMENT STANDBY.  AIRCRAFT LANDED WITHOUT INCIDENT.  REPLACED NR 1 ENGINE LEFT HYDRAULIC PUMP.  OPERATIONAL CHECK OK.

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