Anti-Ice / Rain Flashcards
On the Air SD, symbology and color coding for Wing/Tail Anti-Ice
Blank – Off
White – Commanded on or commanded
off with system pressurized
Red – Manifold failed
On the Air SD, symbology and color coding for Wing/Tail Anti-Ice bleed air
Blank – Anti-Ice off
White – On the ground, anti-ice is
commanded on or anti-ice is commanded off
with system pressurized
Green – Anti-ice commanded on in flight
Amber – Anti-ice bleed air temp out of limits
On the Air SD, symbology and color coding for Engine Bleed Air Pressure and Temperature
White – Normal
Amber – Exceeds limits
On the Air SD, symbology and color coding for Isolation Valve
White – Commanded closed
Green – Commanded open
Amber – Valve position disagrees with
commanded position
On the Air SD, symbology and color coding for Engine Bleed Air Manifold
White – No anti-ice
Green – Anti-ice available
Red – Burst duct in tail compartment
On the Air SD, symbology and color coding for Wing/Tail Anti-Ice valves
Blank - Closed
White – On with no pressure. Alternate system is pressurized and “A” appears
Green – On
Amber – Commanded position disagrees with actual position when in flight. DISAG
appears
Red – Manifold failed
Conditions that require the use of Anti Ice
OAT is 6ºC or below (10ºC or below in flight) and any of the following conditions exist:
-Visible moisture (clouds, rain, snow, sleet, ice crystals, fog when visibility is 1 mile or
less, etc) is present, or
- 3ºC or less temperature/dew point spread, or
- Ice, snow, slush or standing water is present on the ramps, taxiways or runways
Engine Run Up requirements in icing conditions
Run the engines to a minimum of 40% N1 for 10 secs at intervals no greater than 60 minutes
Standing takeoff is required during icing conditions (holding the brakes while in position on the assigned runway until the engines are stabilized at, or above, 50% N1 before the start of the takeoff roll)
Function of Air Data Heat push button
OFF (amber light) – all air data system heaters are off
- Dark when all heater circuits for pitots, rudder limiter, stall probes, static ports, and RAT probes are energized
- RAT probe heat is inhibited during ground operations
Function of WING ICE DET switch
RESET – resets system and removes WING ICE DETECTED alert from the EAD. System will not reset if ice remains on the sensors
TEST – tests the wing ice detection system
Wing ice detection system functions on the ground only and alerts the pilots to the presence of wing upper
surface ice. It is inhibited during takeoff, landing and in-flight. Do not take off with WING ICE DETECTED on
Recall which cockpit windows are electrically heated and/or anti-fogged
- The three pilot windshields are electrically anti-iced and electrically anti-fogged
- The clearview windows are also anti-fogged
Recall which control surfaces are anti-iced with engine bleed air
Wing slats and horizontal stab leading edge—from either or both engines
Recall which engine components are anti-iced
Engine anti-ice systems are independent of the airfoil anti-ice systems and provide ground and in-flight anti-ice heat to their respective engine nose cowl
Recall function of the WINDSHIELD ANTI-FOG switch (for flight and ground use)
OFF – Turns off windshield and clearview anti-fog
ON – Turns on windshield and clearview anti-fog
Recall function of the WINDSHIELD ANTI-ICE switch (for flight and ground use)
OFF – Turns off windshield anti-ice
ON – Turns on windshield anti-ice
