# SDR UPS07M51157

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 13, 2007
- Submitted: November 14, 2007
- Operation: Air carrier
- Aircraft: [N252UP](https://openairdocs.org/aircraft/N252UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48768
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydraulic System
- Condition: Leaking
- Location: Nr 2
- Stage of operation: CR
- How discovered: O
- Nature of condition: K
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS07M51157

## Discrepancy

THREE AND ONE HALF HOURS AFTER TAKEOFF AT FL310, LOST ALL FLUID IN HYD SYSTEM 2.  HYD 3 ELEV OFF ALERT NOT DISPLAYED.  REPLACED RIGHT AND LEFT PUMPS PER MM 29-11-20-4-1 AND CASE DRAIN FILTERS.

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