# SDR P5CA0100586

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 15, 2001
- Submitted: July 17, 2001
- Operation: Air carrier
- Aircraft: [N859FT](https://openairdocs.org/aircraft/N859FT), registered now
- Make and model: Boeing 747123
- Aircraft serial: 20326
- System (JASC): [7930 · Engine Oil Indicating System](https://openairdocs.org/jasc/7930)
- Part: Bypass Valve
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA0100586

## Discrepancy

FILTER BYPASS LIGHT & OIL PRESSURE LIGHT ILLUMINATED (FLICKERING). EXTINGUISHED WHEN #1 THROTTLE RETARDED TO IDLE. RETURNED FOR LANDING. FILTER PYPASS REPLACED IN ORD INITIALLY BY MX. REPLACED PRESSURE VALVE.

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