# SDR UPS07M51276

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 11, 2007
- Submitted: December 19, 2007
- Operation: Air carrier
- Aircraft: [N275UP](https://openairdocs.org/aircraft/N275UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48774
- 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, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS07M51276

## Discrepancy

2 HOURS AFTER DEPARTURE, CREW REPORTED A LEAK ON THE NR 2 HYDRAULIC SYSTEM.  T/S PER FIM 29-10-00-1. RAN NR 2 ENGINE PER AMM 71-00-00-51. NO LEAKS FOUND. RAN ALL 3 ENGINES FOR MIGRATION CHECK OF HYD FLUID FROM SYS 2 TO 1 AND 3. UNABLE TO FIND LEAK OR MIGRATION OF HYD FLUID ON GROUND. FOB BEFORE ENG RUN 62.6, AFTER 62.0. HYD PRESS NR 2 3020, NR 1 3060, NR 3 3020 PSI RESPECTIVELY.

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