# SDR QMLA2019112299087

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 19, 2019
- Submitted: November 22, 2019
- Operation: Air carrier
- Aircraft: [N911AL](https://openairdocs.org/aircraft/N911AL), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53144
- Aircraft time: 10,241 hours, 33,158 cycles
- Engine: Allsn 250C20
- Engine time: 1,349 hours, 3,227 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Part number: M25010672
- Condition: Making Metal
- Stage of operation: TX
- 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/QMLA2019112299087

## Discrepancy

DURING ROUTINE INSPECTION OF ENGINE CHIP DETECTORS FOUND NUMEROUS CHIPS AND DEBRIS ON BOTH UPPER AND LOWER CHIP PLUGS. AMOUNT AND SIZE EXCEEDED ALLOWABLE PER ROLLS ROYCE C47-250 EMM. *** THIS AIRCRAFT REMAINS OOS AT THE TIME OF THIS SUBMISSION TO REPLACE THIS ENGINE ***

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