# SDR QMLA2011082111091

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 21, 2011
- Submitted: September 9, 2011
- Operation: Air carrier
- Aircraft: [N408LL](https://openairdocs.org/aircraft/N408LL), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53483
- Aircraft time: 6,178 hours, 15,870 cycles
- Engine: Allsn 250C*
- Engine time: 6,214 hours, 15,551 cycles
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Part number: 23063392
- Part serial: CAE847459
- Condition: Making Metal
- Part time: 6,214 hours, 15,551 cycles
- Stage of operation: NR
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QMLA2011082111091

## Discrepancy

DURING SCHEDULED MAINT EVENT B0711 DISCOVERED METAL ON UPPER AND LOWER CHIP DETECTORS, AND ENG OIL FILTER, SIZE AND QN EXCEED PUBLISHED LIMITS.

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