# SDR DXTA2018120301752

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 3, 2018
- Submitted: December 5, 2018
- Operation: Air carrier
- Aircraft: [N978QS](https://openairdocs.org/aircraft/N978QS), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500187
- Aircraft time: 15,119 hours, 9,283 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Condition: Odor
- Stage of operation: NR
- How discovered: 9
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2018120301752

## Discrepancy

CABIN ODOR OIL SMELL - SMELL OF FUMES IN CABIN AND COCKPIT WHEN APU TURNED ON. SMELL OF BURNT OIL.  
DETERMINED SOURCE OF ODOR WAS RESIDUAL ODOR LEFT IN THE DUCTING FROM A 
PREVIOUS A.P.U THAT WAS REMOVED DUE TO BURNING OIL.

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