# SDR CA990129020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 20, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Engine: Pwa PW123
- System (JASC): [6120 · Propeller Controlling System](https://openairdocs.org/jasc/6120)
- Part: Tscu
- Part number: CPW311835404
- Condition: Faulty
- Location: Engine
- Part time: 84 hours
- Stage of operation: TX
- Nature of condition: L
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA990129020

## Discrepancy

(CAN) AUTOFEATHER SYSTEM ARM LIGHT ILLUMINATES AT 90 PERCENT TORQUE, WITH NO SELECTION ON OF THE AUTOFEATHER SYSTEM.  TORQUE SIGNAL CONDITIONING UNIT (TSCU) REPLACED.

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