# SDR DXTA200601608

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 18, 2006
- Submitted: September 20, 2006
- Operation: Air carrier
- Aircraft: [N934QS](https://openairdocs.org/aircraft/N934QS), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500034
- Aircraft time: 8,203 hours, 5,051 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cockpit
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA200601608

## Discrepancy

DURING FLIGHT FROM PHL TO SDL, DISCOVERED SULFA  SMELL IN COCKPIT AT FL 400 AT ABOUT 2 HOURS  INTO THE FLT, DIVERTED INTO ICT.  SMELL SEEMED TO OCCUR EVERY FEW MINUTES.  COULD NOT DETERMINE ORIGIN.  DURING OPERATION OF AIRCRAFT FOUND COCKPIT ACM MAKING A GROWLING NOISE. REMOVED COCKPIT ECU TURBINE TO INSPECT IAW CE 750 MM CH 21-51-00 FOUND TURBINE BLADETIPS ERODED AND CAN FEEL FRICTION WHEN TURNING TURBINE BY HAND AND HEAR A GRINDING NOISE.  REMOVED AND REPLAXCED AFT ECU TURBINE IAW CE750 MM 21-51-00

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