# SDR CA951102001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 25, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Make and model: Cessna 208B
- Registry model: [Cessna 208B](https://openairdocs.org/model/cessna-208b) (OpenAirDocs)
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Bearing
- Part number: C4140070102RX
- Condition: Spalled
- Location: Avionics Blower
- Stage of operation: CR
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA951102001

## Discrepancy

(CAN)THE PILOT REPORTED HEAVY STATIC ON THE COMM AND VOR FLUCTUATION OF UP TO 5 DEGREES. AVIONICS TRACED THE PROBLEM TO THE AVIONICS COOLING FAN MOTOR WHOS BEARINGS HAD WORN OUT AND WERE BEGINNING TO DRAG  THE MOTOR ROTATION DOWN. A CHECK WITH THE HISTORY OF THE AIRCRAFT REVEALED NAV FLUCTATIONS AND DECREASED VOR RANGE COINCIDING WITH REPORTS OF A NOISY FAN MOTOR.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.