# SDR DL73S041119

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 18, 2004
- Submitted: December 20, 2004
- Operation: Air carrier
- Aircraft: N373DL
- Make and model: Boeing 737247
- Aircraft serial: 23520
- Aircraft time: 46,647 hours, 36,537 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 623337
- Part serial: MX494350
- Condition: Failed
- Location: A-Hyd System
- Stage of operation: CR
- 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/DL73S041119

## Discrepancy

LOSS OF A-SYSTEM HYDRAULIC PRESSURE IN FLIGHT.  REPLACED BOTH ENGINE PUMPS DUE A-SYSTEM CONTAMINATION.

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