# SDR 2019FA0000092

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 19, 2019
- Submitted: March 26, 2019
- Operation: General aviation
- Aircraft: [N300KR](https://openairdocs.org/aircraft/N300KR), registered now
- Make and model: Bombdr BD1001A10
- Aircraft serial: 20385
- Aircraft time: 2,684 hours, 1,778 cycles
- Engine: Hnywl AS90711A
- Engine time: 2,684 hours, 1,799 cycles
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Carbon Seal
- Part number: 30355323
- Part serial: 1216902000526
- Condition: Failed
- Location: Lt Engine
- Part time: 2,684 hours, 1,799 cycles
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2019FA0000092

## Discrepancy

NR 4 BEARING CARBON SEAL FAILURE. CARBON WAS FOUND IN THE CHIP DETECTOR INSPECTION AND A FILTER AND OIL CHECK WAS PERFORMED SHOWING HEAVY CARBON WEIGHT.

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