Capter 3 Anti-Ice, Rain Flashcards
On which areas of the plane will you have ice protection
Wings- outboard 3 slats (3, 4, 5)
Engines- engine nacelle leading edge
When must you use wing ice protection
Inflight, whenever there is an indication of accumulating ice on the airframe.
Where may you observe the accumulation of ice?
On the Structural Ice Indicator (located between the windshields)
Or on the windshield wipers
When must you use engine anti-ice?
Whenever icing conditions exist or are anticipated for both ground and flight ops
When do engine icing conditions exist?
When OAT is 10C or below, and visible moisture in any form is present
Does the engine bleed valve need to be open in order to use its respective engine anti-Ice system
No. A/I is plumbed independently.
What are the indications if engine anti-ice is in use?
ON (in blue) illuminates on each of the engines’ A/I push buttons
ENG A.ICE and IGNITION (both in green) appears in the memo section
What are the indications if the wing anti-ice is in use?
ON (in blue) illuminates on the WING anti-ice push button
WING A.ICE (in green) appears on the E/WD memo section.
ANTI ICE (in white) appears on each side of the BLEED page
Green arrows appear on each side of the BLEED page when the respective wing anti-ice valve is open for that wing.
Why should you avoid extended flight in icing conditions with slats extended
Because there is reduced wing anti-icing capability with the slats extended
What causes an amber FAULT to illuminate in the WING and ENG 1/2 push buttons?
They will appear momentarily during valve transition
Represents a disagreement with the actual and selected valve position
For WING push button, indicates low bleed air pressure is detected
With the PROBE/WINDOW HEAT push button in auto, when are probes heated on the ground?
With at least one engine running all probes (except TAT) and windows are heated at low heat
Which probes are not heated on the ground?
TAT probes
When will the probes and Windows receive high heat?
Once airborne
When will the TAT probes receive heat
Airborne
What happens when you select the PROBE/WINDOW HEAT push button to ON?
All Windows and probes (except for TAT) are heated on the ground even without an engine running.
