# SDR UPS96520102

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 11, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N409UP](https://openairdocs.org/aircraft/N409UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 23731
- System (JASC): [7930 · Engine Oil Indicating System](https://openairdocs.org/jasc/7930)
- Part: Pressure Switch
- Part number: 215N04404
- Condition: Intermittent
- Location: Lt Engine
- Stage of operation: CL
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS96520102

## Discrepancy

INSPECTION, INFLIGHT SHUTDOWN OF LT ENGINE DUE TO EICAS MESSAGE LT ENG OIL FILTER, ALL OTHER ENG INDICATION NORMAL.  C/W F/M 79-21-00 FIG 104 REMOVED MAIN ENG OIL FILTER AND CHECKED ALL MAGNETIC CHIP DET, NO CONTAMINATION FOUND ON DETECTORS.  INSTALLED NEW FILTER PER MM 79-21-05.  REMOVED AND REPLACED LT ENG DIFF PRESSURE SWITCH PER MM 79-35-01.  RAN ENG, NO LEAKS OR MESSAGES.

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