# SDR EIA2006061

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 25, 2006
- Submitted: May 1, 2006
- Operation: Air carrier
- Aircraft: [N471EV](https://openairdocs.org/aircraft/N471EV), registered now
- Make and model: Boeing 747273C
- Aircraft serial: 20651
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Switch
- Condition: Failed
- Location: Fire Warning
- Stage of operation: IN
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/EIA2006061

## Discrepancy

FIRE WARNING LIGHTS ON CONSTANT, WILL NOT RESET OR TEST.  FOUND BAD FIRE WARNING CUT-OUT SWITCH.  REPLACED MASTER F/O SWITCH AND ASSY, OPS CHK GOOD.

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