# SDR UIEA200500012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 3, 2005
- Submitted: April 15, 2005
- Operation: Air carrier
- Aircraft: [N409MC](https://openairdocs.org/aircraft/N409MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 30558
- Engine: Ge CF680C2*
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: B-Nut
- Condition: Loose
- Location: Oil Press Xmiter
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA200500012

## Discrepancy

SHORTLY AFTER TAKEOFF OIL QTY DROPPED TO ZERO.  DURING CLIMB-OUT, OIL PRESSURE DROPPED EVENTUALLY TO SIX PSI.  NR 4 ENGINE WAS SHUT DOWN AS OIL PRESSURE TO 10 PSI.  OIL PRESSURE REMAINED AT 6 PSI, N1 AT 25 PERCENT AND N2 BETWEEN 17 AND 21 PERCENT FOR DURATION OF FLIGHT.  TIGHTENED B-NUT ON OIL PRESSURE TRANSMITTER PERFORMED 'NO OIL PRESSURE' INSPECTON PER MM 72-00-00.  ALSO PERFORMED POST WINDMILLING INSPECTION PER 72-00-00.  REPLACED OIL FILTER PER 79-21-04.  NO METAL NOTED ON CHIP DETECTORS AND FILTER.  NO LEAKS NOTED ON ENGINE RUN UP.  ALL INSPECTION SATISFACTORY.  (M)

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