# SDR CA120802003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 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: Pwa PW127
- System (JASC): [6123 · Propeller Feathering/Reversing](https://openairdocs.org/jasc/6123)
- Part: Autofeather Sys
- Condition: Malfunctioned
- Location: Nr 1 Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA120802003

## Discrepancy

(CAN) AFTER TAKEOFF AT FLIGHT LEVEL 500 FT, THE "UP TRIM" WARNING ILLUMINATED ON NR2 ENGINE WHILE THE NR 1 TORQUE INDICATED "0".   THE NR 1 ENGINE WAS SHUTDOWN AND SECURED BEFORE THE CREW RETURNED TO THE DEPARTURE POINT WHERE AN UNEVENTFUL SINGLE ENGINE LANDING WAS MADE.  THE PROBLEM WAS TRACED BACK TO A COMMUNICATION ISSUE BETWEEN THE ENGINE AUTOFEATHER UNIT AND THE AIRFRAME.

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