# SDR 9514913217

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 27, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N317US
- Make and model: Airbus A320-211
- Registry model: [Airbus A320-211](https://openairdocs.org/model/airbus-industrie-a320-211) (OpenAirDocs)
- Aircraft serial: 197
- Engine: Cfmint CFM565A1
- System (JASC): [7321 · Fuel Control/Turbine Engines](https://openairdocs.org/jasc/7321)
- Part: Ecu
- Part number: 1459M55P17
- Condition: Malfunctioned
- Location: Nr 1 Engine
- Part time: 14,128 hours
- Stage of operation: CR
- Nature of condition: O
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9514913217

## Discrepancy

DURING CRUISE AT FL 390, THE AUTO THROTTLE TRIPPED OFF AND THE NR 1 ENGINE N1 SPEED ACCELERATED TO 102 PERCENT FOR 41 MINUTES.  CYCLING OF THE THRUST LEVER WAS NO HELP, DESCENDED TO A LOWER ALTITUDE AND SHUT NR 1 ENGINE DOWN.  AFTER ALLOWING THE ENGINE TO COOL, PERFORMED RESTART AND ALL INDICATIONS WERE NORMAL.  AIRCRAFT DIVERTED TO PHX AND LANDED WITHOUT INCIDENT.  MAINTENANCE REPLACED THE NR 1 ENGINE CONTROL UNIT AND OPERATIONAL CHECK OK.

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