# SDR UPS07851335

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 21, 2007
- Submitted: December 28, 2007
- Operation: Air carrier
- Aircraft: N840UP
- Make and model: Doug DC-8-73F
- Registry model: [Doug DC-8-73F](https://openairdocs.org/model/douglas-dc-8-73f) (OpenAirDocs)
- Aircraft serial: 46140
- System (JASC): [7931 · Engine Oil Pressure](https://openairdocs.org/jasc/7931)
- Part: Oil System
- Condition: Low Pressure
- Location: Nr 4 Engine
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS07851335

## Discrepancy

NR 4 ENGINE LOST PRESSURE, SHUT DOWN WITH 20 PSI N1 16 PERCENT, N2 9.4 PERCENT 5 QUARTS INDICATED 6000 FT/200 KTS.  REMOVED AND REPLACED LINE SUPPLY OIL TO OIL PRESSURE TRANSMITTER IAW M/M 20-12-00-2.  LEAK AND OPS CHECK GOOD IAW M/M 71-00-00.

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