# SDR UALA2011042802068

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 28, 2011
- Submitted: May 2, 2011
- Operation: Air carrier
- Aircraft: [N225UA](https://openairdocs.org/aircraft/N225UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30554
- Aircraft time: 38,133 hours, 4,653 cycles
- Engine: Pwa PW40903
- System (JASC): [7930 · Engine Oil Indicating System](https://openairdocs.org/jasc/7930)
- Part: Pressure Switch
- Part number: 21SN04459
- Part serial: 187
- Condition: Faulty
- Location: Oil Pressure
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011042802068

## Discrepancy

ENGINE OIL FILTER SENSOR LT. REPLACED THE MAIN ENG OIL FILTER, NO DEBRIS NOTED. REPLACED THE DIFFERENTIAL PRESSURE SWITCH ASSY. RAN ENG PER JRH OIL PRESSURE READINGS NORMAL.

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