# SDR ALGA0730201536129

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 15, 2015
- Submitted: July 30, 2015
- Operation: Air carrier
- Aircraft: [N487AL](https://openairdocs.org/aircraft/N487AL), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53150
- Aircraft time: 11,598 hours
- Engine: Allsn 250C20
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Bearing
- Part number: M25010106
- Part serial: NWB131539
- Condition: Worn
- Location: Engine
- Part time: 825 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ALGA0730201536129

## Discrepancy

DURING CRUISE FLIGHT ENGINE CHIP LIGHT ILLUMINATED.  LANDED ON AN OFFSHORE PLATFORM, EXAMINED CHIP PLUG FOUND METAL PARTICLES.  UPON RECOVERY OF AIRCRAFT & SUBSEQUENT TEAR DOWN OF ENGINE, THE NATURE OF THE PROBLEM WAS DETERMINED TO BE THE NUMBER FIVE BEARING IN THE TURBINE SECTION.

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