# SDR CA990308021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Aerosp ATR 42-300
- Registry model: [Aerosp ATR 42-300](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-300) (OpenAirDocs)
- Engine: Pwa PW120
- Propeller: Hamstd 14SF5
- System (JASC): [7712 · Engine BMEP/Torque Indicating](https://openairdocs.org/jasc/7712)
- Part: Tscu
- Condition: Erratic
- Location: Nr 2 Engine
- Component: Bfgoodrich
- Stage of operation: TO
- Nature of condition: N
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA990308021

## Discrepancy

(CAN) ON TAKEOFF, NR 2 ENGINE BECAME UNCONTROLLABLE.  TAKEOFF WAS REJECTED AND THE AIRCRAFT RETURNED TO BLOCKS.  THE TORQUE SIGNAL CONDITIONING UNIT (TSCU) WAS REPLACED AND THE SYSTEM WAS CHECKED SERVICEABLE.

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