Chapter 13 - Ice and Rain Protection Flashcards
In what temperature range (degrees C) may icing conditions exist in flight?
+10 to -40 degrees C
What does illumination of the PITOT HT annunciator indicate?
One or more pitot heat probes are not receiving power
What is the source of heat for the wing leading edges?
High and low pressure bleed air
What is the source of heat for the stabilizer?
Electrically heated rubber boot
What is the source of heat for the engines and nacelles?
Low-pressure bleed air
What is the source of heat for the P1/T1 probes?
Electrical
With the NAC HEAT switch ON, when is the L or R NAC HT annunciator illuminated?
When engine anti-ice valve is closed
With the NAC HEAT switch OFF, when is the L or R NAC HT annuncator illuminated?
When engine anti-ice valve is open
What does illumination of the green WSHLD HT annunciator indicate?
Windshield is being heated by bleed air
What automatically occurs when the amber WSHLD OV HT annunciator illuminates?
Whindshield shutoff valve closes
What does illumination of the STAB HT annunciator indicate in flight?
one or more elements is inoperative
What occurs when the STAB HT is turned on while on the ground?
System performs a 2 to 3-second self-test, disables, and the STAB HT annunciator illuminates
What is indicated if the windshield defog switch is ON and the amber L or R WS DEFOF annunciator illuminates?
Underheat or overheat condition exists
What does illumination of the ALC LOW annunciator indicate?
Reservoir is low on fluid
How long should the supply of fluid in the alcohol reservoir last?
45 minutes
