OPERATIONS MANUAL

Ice & Rain Protection
EICAS Messages:
CAUTION MESSAGES (accompanied by caution light and beeper sound)
>ICING NAC ()
ice detector senses nacelle icing conditions
AND nacelle anti-ice is deactivated
AND aircraft is in flight
>ANTI-ICE NAC
>ANTI-ICE WING
HEAT () AOA
HEAT () TAT
HEAT P/S ()
HEAT P/S () AUX
HEAT WINDOW ()
>ICE DETECTORS
>ICING WING
NAI VALVE ()
WAI VALVE ()
INOP
LIGHT
VALVE
LIGHT
VALVE
LIGHT
ADVISORY MESSAGES
ice detector does not sense nacelle icing conditions
AND total air temperature is above 12°C
AND any nacelle anti-ice is activated
ice detector does not sense wing icing conditions
AND total air temperature is above 12°C
AND any wing anti-ice is activated
AOA probe (L or R) heater fault
TAT probe (L or R) heater fault
pitot-static probe (CAPT or F/O) heater fault
auxiliary pitot-static probe (L or R) heater fault
window (L or R ) heat controller fault
OR sensor fault
OR power disconnected
both ice detectors are inoperative
ice detector senses wing icing conditions
AND wing anti-ice is deactivated
AND aircraft is in flight
nacelle (1, 2, 3, or 4) anti-ice valve position disagrees
with commanded position
AND engine is running
wing (L or R) anti-ice valve position disagrees with
commanded position
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