# SDR HYIAN991AA

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 25, 2009
- Submitted: February 4, 2009
- Operation: Air carrier
- Aircraft: [N991AA](https://openairdocs.org/aircraft/N991AA), registered now
- Make and model: Cessna 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (OpenAirDocs)
- Aircraft serial: 402C0317
- Aircraft time: 24,271 hours, 60,000 cycles
- Engine: Cont TSIO520VB
- Propeller: Mcauly 3AF32C505
- System (JASC): [2140 · Heating System](https://openairdocs.org/jasc/2140)
- Part: Motor
- Part number: SW714709
- Condition: Failed
- Location: Heater Blower
- Component: Blower
- Component part number: G722099
- Stage of operation: CR
- How discovered: O
- Nature of condition: B, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HYIAN991AA

## Discrepancy

IN CRUISE FLIGHT, NOXIOUS FUMES FILLED CABIN.  CREW SUSPECTED HEATER AND TURNED OFF HEATER SWITCH.  FUMES DISSIPATED.  TURNED HEATER BACK ON AND FUMES RETURNED.  RETURNED FOR UNEVENTFUL LANDING.  MAINTENANCE INSPECTED HEATER AND FOUND COMBUSTION BLOWER INOPERATIVE.  REMOVED AND REPLACED COMBUSTION BLOWER ASSEMBLY.

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