# SDR R7MA33684

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 15, 2001
- Submitted: November 13, 2001
- Operation: Air carrier
- Aircraft: [N407SJ](https://openairdocs.org/aircraft/N407SJ), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53422
- Engine: Allsn 250C47B
- System (JASC): [7240 · Turbine Engine Combustion Section](https://openairdocs.org/jasc/7240)
- Part: Combust Chamber
- Part number: 23030911
- Part serial: 41478
- Condition: Damaged
- Location: Engine
- Part time: 711 hours
- Stage of operation: IN
- 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/R7MA33684

## Discrepancy

BURNER DRAW VALVE WAS NOT COATED WITH ANTI-SEIZE FROM THE FACTORY.  DURING REMOVAL OF THE VALVE, THREAD DAMAGE OCCURRED.  REPLACED WITH NEW UNIT, CORRECTED PROBLEM.

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