# SDR USAASB02154

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 16, 2002
- Operation: Air carrier
- Aircraft: N510AU
- Make and model: Boeing 737-3B7
- Registry model: [Boeing 737-3B7](https://openairdocs.org/model/boeing-737-3b7) (OpenAirDocs)
- Aircraft serial: 23385
- Engine: Ge CFM56*
- System (JASC): [2930 · Hydraulic Indicating System](https://openairdocs.org/jasc/2930)
- Part: Panel
- Part number: 693731768
- Condition: Illuminated
- Location: Ovhd Hydr Panel
- Stage of operation: CR
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAASB02154

## Discrepancy

DURING CRUISE, ENROUTE, THE NR1 ENGINE DRIVEN HYDRAULIC PUMP (A) SYSTEM LOW PRESSURE LIGHT ILLUMINATED.  FIVE MINUTES LATER, THE NR 2 ENGINE DRIVEN HYDRAULIC PUMP (B) SYSTEM LOW PRESSURE LIGHT ILLUMINATED.  HYDRAULIC SYSTEM QUANTITY WAS OK AND HYDRAULIC SYSTEM PRESSURE REMAINED AT 3,000 PSI WIGHT ELECTRIC PUMPS.  FLIGHT RETURNED TO FIELD AND LANDED WITHOUT FURTHER INCIDENT.  NO EMERGENCY WAS DECLARED.  COULD NOT DUPLICATE PROBLEM.  ALL HYDRAULIC SYSTEMS OPERATE NORMAL.  REMOVED AND REPLACED THE P5-8 OVERHEAD HYDRAULIC PANEL AS PRECAUTIONARY.  OPS CHECK GOOD.

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