# SDR CALA2014051600603

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 16, 2014
- Submitted: May 16, 2014
- Operation: Air carrier
- Aircraft: [N78005](https://openairdocs.org/aircraft/N78005), registered now
- Make and model: Boeing 777224
- Aircraft serial: 27581
- Aircraft time: 76,530 hours, 7,788 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Control Unit
- Part number: ELM8333
- Condition: Failed
- Location: Equip Cooling
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2014051600603

## Discrepancy

EQUIPMENT COOLING OVERRIDE LIGHT ILLUMINATED IN FLIGHT.  RAN CHECKLIST RECYCLED SWITCH & EQUIP COOLING OVERRIDE REMAIN ILLUMINATED.  MX MSG 21-15111 ELCU EQUIP CLG VENT FAN NOT IN COMMAND.  PERFORMED FIM TASK 21-27-00-810 REPLACED ELCU.  OPERATIONS CHECKED GOOD.  ROTABLE PARTS CHANGE WAS INDICATED TT 1622670, SN OFF 04815.

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