# SDR UALA2011082904617

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 29, 2011
- Submitted: September 19, 2011
- Operation: Air carrier
- Aircraft: [N788UA](https://openairdocs.org/aircraft/N788UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26942
- Aircraft time: 63,372 hours, 9,096 cycles
- Engine: Pwa PW40903
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Filter Element
- Condition: Faulty
- Location: Rt Engine
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011082904617

## Discrepancy

ENG OIL FILTER R RIGHT ENGINE PRIMARY OIL FILTER APPROACHES BYPASS (LARGE PRESSURE DIFFERENTIAL ACROSS NORMAL FILTER) WITH ENGINE RUNNING.  STATUS CREW COMMENTS:  RIGHT ENGINE OIL FILTER ADVISORY MSG-7962312 INACTV TA MODE.  FIM 71-05 TASK 835, GOT MAT MSG 79-62312 'ENG OIL FILTER'.  CHIP DETECTORS INSPECTED PER AMM, OKAY.  REPLACED RT ENG MAIN OIL FILTER ELEMENT AS PER AMM 79-21-05.  RAN ENG IN IDLE, FINAL CHECK GOOD.

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