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9 Cards in this Set
- Front
- Back
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What does the Warning Annunciator System consist of?
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- WEU (Warning Electronic Unit)
- overhead panel annunciator - REU (Remote Electronic Unit) aural warnings - T/O inhibit and Ground Ops buttons |
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What does the WEU do?
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- processes and controls warning and caution signals
- receives info from aircraft sensors - two channels |
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How is the WEU powered?
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- normal power by DC electrical (battery, generator, GPU)
- back-up power by the emergency bus (powered by emergency battery) |
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Tell me about the BITE light
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- indicates loss of redundancy in warning sensing/lighting system
- non deferrable - lamp test for WEU sensing/lighting channels and panel bulbs only |
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What indications are not generated by the WEU?
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- TCAS
- TAWS - Pressurization fault |
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What color lights indicate normal status
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blue, green, and white
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What happens when the WEU senses a problem?
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- the appropriate annunciator flashes on the glareshield (master or caution)
- these flash until pressed, and stay illuminated until reset - specific annunciators also illuminate |
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What happens on the Central Warning Panel?
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- directs attention to appropriate system
- flashes initially, then steady after master warning/caution reset - goes out when condition no longer exists |
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What does the REU do and what does this acronym stand for?
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- remote electronic unit
- generates aural alerts for general problems: triple chime for warnings, single for cautions - generates special aural alerts |
