# SDR ASAA2012080392663

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 3, 2012
- Submitted: August 6, 2012
- Operation: Air carrier
- Aircraft: [N586AS](https://openairdocs.org/aircraft/N586AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35189
- Aircraft time: 18,453 hours, 5,866 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Pressure Switch
- Part number: QA07995
- Part serial: YY097369H
- Condition: Failed
- Location: Nr 2 Engine Fuel
- Part time: 18,453 hours, 5,866 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2012080392663

## Discrepancy

RIGHT FUEL FILTER BYPASS LIGHT ILLUMINATED IN FLIGHT,  ALL ENGINE PERIMETERS NORMAL. QRH 12.3 COMPLETED.  ACCOMPLISHED FAULT ISOLATION PROCEDURE,  DIFFERENTIAL PRESSURE SWITCH FAILED IN CLOGGED POSITION.  R & R NR 2 ENG FUEL DIFFERENTIAL PRESSURE SWITCH REF AMM 73-34-01.  R & R FUEL FILTER AS A PRECAUTIONARY REF AMM 73-11-02. OPS AND LEAK CHECKED GOOD.

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