# SDR 9JLA2013011803545

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 13, 2012
- Submitted: January 18, 2013
- Operation: Air carrier
- Aircraft: [N553BW](https://openairdocs.org/aircraft/N553BW), registered now
- Make and model: Raythn HAWKER800
- Aircraft serial: 258297
- Aircraft time: 10,906 hours, 6,805 cycles
- Engine: Garrtt TFE731*
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Indicator
- Part number: 30702464
- Condition: Defective
- Location: Bypass Filter
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9JLA2013011803545

## Discrepancy

DURING THE POST FLIGHT INSPECTION, THE NR 1 ENGINE OIL FILTER BYPASS INDICATOR WAS NOTED IN THE BYPASS POSITION.  A SOAP WAS TAKEN AND RESULTS WERE NORMAL.  THE BYPASS INDICATOR, PN 3070246-4 ON THE ENGINE WAS SUSPECT TO BE DEFECTIVE AND WAS REPLACED IAW SB TFE731-79-3069. COMPLIED WITH GROUND RUN LEAK CHECKS, NO DEFECTS NOTED.

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