# SDR CA120605004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 24, 2012
- Submitted: September 14, 2015
- Operation: General aviation
- Make and model: Aerosp ATR 72-212A
- Registry model: [Aerosp ATR 72-212A](https://openairdocs.org/model/aerospatiale-atr-72-212a) (OpenAirDocs)
- Engine: Pwc PW127F
- System (JASC): [7712 · Engine BMEP/Torque Indicating](https://openairdocs.org/jasc/7712)
- Part: Indication Sys
- Condition: Malfunctioned
- Location: Lt Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA120605004

## Discrepancy

(CAN) DURING CLIMB PASSING FL112, THE LT ENGINE TORQUE DROPPED FROM THE SET 72.3 PERCENT TO 62.6 PERCENT THEN RECOVERED.  THE EVENT LASTED APPROXIMATELY 8 SECONDS  SUBSEQUENT TROUBLESHOOTING LED TO THE REPLACEMENT OF THE TORQUE SENSOR AND AUTOFEATHER UNIT BEFORE THE ACFT WAS RETURNED TO SERVICE.

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