# SDR CA130611009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 2, 2013
- Submitted: September 14, 2015
- Operation: General aviation
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Engine: Allsn 250C47B
- Engine time: 268 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Making Metal
- Part time: 149 hours
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA130611009

## Discrepancy

(CAN) SUBJECT HELICOPTER, ROUTINE ANNUAL INSPECTION, WHEN TECHS CHECKED THE ENGINE CHIP PLUGS IAW ASB 407-13-99 AND CEB A-72-6075 AND FOUND SIGNIFICANT AMOUNTS OF METAL FLAKES ON BOTH PLUGS.  AT LEAST 1 OF THE CHIPS EXCEEDS THE R & R OPS & MM 72-00-00, PAGE 339, LIMIT OF 0.79 MM. THE ENGINE CHIP LIGHT HAD NOT ILLUMINATED.  THE ENGINE WILL BE REMOVED.

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