MD-11 Flight Crew Operations Manual
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Ice and Rain Protection Chapter Ice
Alerts Section 40
Ice.40.1
Ice.40 Ice and Rain Protection-Alerts
NOTE: The associated cue switch is shown in parenthesis (XXX)
following the alert.
Red Boxed Alerts (Level 3)
ENG 2 A-ICE DUCT (AIR) - (Effective for KCE & on) Leak in the engine 2
anti-ice duct. Engine 2 anti-ice valve is still open.
Amber Boxed Alerts (Level 2)
TAIL A-ICE DISAG (AIR) - Flow/no flow not in agreement with switch
position.
WNG A-ICE L/R DISAG (AIR) - Flow/no flow not in agreement with
respective switch position.
Amber Alerts (Level 1)
A-ICE SENSOR FAIL (AIR) - Anti-ice system monitor failure exists.
A-ICE SYS MANUAL (AIR) - Auto anti-ice system, if installed, reverts to
manual during fault condition, or, is selected to manual by flight crew.
AIR DATA HTR ON (MAINT) - An air data probe heater is on when it
should be off.
AOA HEAT L/R FAIL (MISC) - Left/right angle-of-attack probe heater has
failed.
ENG 1/2/3 A-ICE DISAG (AIR) - Respective engine (1/2/3) anti-ice valve in
disagreement with commanded position.
ENG 2 A-ICE DUCT (AIR) - (Effective for KCA - KCE) Leak in the engine
2 anti-ice duct. A secondary shroud allows continued use of ice
protection.
ENG 2 A-ICE OFF (AIR) - (Effective for KCE & on) A leak is detected
adjacent to engine 2 anti-ice duct, engine anti-ice valve is automatically
closed, and engine 2 anti-ice switch is commanded on.
ENG DUCT TST FAIL (AIR) - (Effective for KCE & on) Engine 2 anti-ice
duct test has failed.
ICE DET SINGLE (AIR) - One channel of the dual ice protection system, if
installed, is inoperative. The ice detection system is no longer primary
for ice detection.
October 02, 2006
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