# SDR UALA2013072405202

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 2013
- Submitted: July 25, 2013
- Operation: Air carrier
- Aircraft: [N793UA](https://openairdocs.org/aircraft/N793UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26946
- Aircraft time: 70,545 hours, 10,012 cycles
- Engine: Pwa PW4090
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Relay
- Part number: 8112507
- Part serial: 36
- Condition: Faulty
- Location: Lt Engine
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2013072405202

## Discrepancy

LEFT ENGINE ELECTRONIC ENGINE CONTROL IS IN THE ALTERNATE CONTROL MODE DUE TO A CONTROL SYS FAULT.  REPLACED ENGINE RELAY UNIT.

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