# SDR CALA2013082790797

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 25, 2013
- Submitted: August 27, 2013
- Operation: Air carrier
- Aircraft: [N793UA](https://openairdocs.org/aircraft/N793UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26946
- Aircraft time: 69,955 hours, 9,942 cycles
- Engine: Pwa PW40903
- System (JASC): [7321 · Fuel Control/Turbine Engines](https://openairdocs.org/jasc/7321)
- Part: Relay
- Condition: Faulty
- Location: Eec
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2013082790797

## Discrepancy

ENGINE ELECTRONIC ENGINE CONTROL MODE L MESSAGES 73-61011.   TROUBLESHOOTING FOUND ENGINE RELAY UNIT M73005 AT FAULT.  NEED TO REPLACE EMERGENCY RELAY UNIT, IAW FIM 71-11 TASK 812, FIM 77-11 T812.  ACTIONED & LEFT ENGINE EMERGENCY RELAY UNIT REPLACED IDLE RUN NO FAULT.  ELECTRONIC ENGINE CONTROL STATIC & PROBE HEAT TEST VIA MAT PASSED.

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