# SDR 98ZZZX1245

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N510SD](https://openairdocs.org/aircraft/N510SD), registered now
- Make and model: Cessna 650
- Registry model: [Cessna 650](https://openairdocs.org/model/cessna-650) (OpenAirDocs)
- Aircraft serial: 6500161
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Switch
- Part number: 762811
- Condition: Failed
- Location: Blower Vane Assy
- Component: 99101135
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX1245

## Discrepancy

BLOWER BECAME NOISY. FOUND 5 EACH FAN BLADES MISSING (P/N 2100900-25).  REMOVED BLOWER FROM AUX HEATER (P/N 6214434-53).  FOUND BLADES IN AUX HEATER, ALSO FOUND AIRFLOW SWITCH VANE.  SUSPECTED THE VANE CAME OFF THE AIRFLOW SWITCH ASSY CAUSING THE BLADES TO BREAK OFF OF THE FAN/BLOWER ASSY.  SUBMITTER STATED THE VANE TO SWITCH ATTACHMENT SHOULD BE OF A BETTER/STRONGER DESIGN.

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