# SDR 99UAL900620

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 1, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N199UA
- Make and model: Boeing 747422
- Aircraft serial: 28717
- Engine: Pwa PW4056
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Light
- Condition: Malfunctioned
- Location: Cabin
- Stage of operation: NR
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99UAL900620

## Discrepancy

EMERGENCY LIGHTS  EICAS ADVISORY MESSAGE DISPLAYED.  EMERGENCY LIGHTS SWITCH NOT IN ARMED POSITION, OR SWITCH IN ARMED POSITION ON AND EMERGENCY LIGHTS TURNED ON BY FLIGHT ATTENDANT SWITCH.

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