3. Anti-Ice/Rain Flashcards
Recall applicable AIR SD symbology and color-coding
Wing/Tail Anti-Ice
Blank – Off
White – Commanded on or commanded off with system pressurized
Red – Manifold failed
Recall applicable AIR SD symbology and color-coding
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
Recall applicable AIR SD symbology and color-coding
Engine Bleed Air Pressure
White – Normal
Amber – Exceeds limits
Recall applicable AIR SD symbology and color-coding
Engine Bleed Air Temperature
White – Normal
Amber – Exceeds limits
Recall applicable AIR SD symbology and color-coding
Isolation Valve
White – Commanded closed
Green – Commanded open
Amber – Valve position disagrees with commanded position
Recall applicable AIR SD symbology and color-coding
Engine Bleed Air Manifold
White – No anti-ice
Green – Anti-ice available
Red – Burst duct in tail compartment
Recall applicable AIR SD symbology and color-coding
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
Recall conditions which require the use of engine anti-ice
- OAT is 6º or below (10º 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
- 3º or less temperature/dew point spread, or
- Ice, snow, slush or standing water is present on the ramps, taxiways or runways
Recall engine run-up requirements during icing conditions
Run the engines to a minimum of 40% N1 for approximately 10 seconds at intervals no greater than 60 minutes
Additionally, a standing takeoff is required during icing conditions and is accomplished by 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
Recall function of the AIR DATA Heat pushbutton
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
**Note: RAT probe heat is inhibited during ground operations
Recall function of the 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
**Note: 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
**Note: Do not takeoff with “WING ICE DETECTED” alert displayed
Recall which cockpit windows are electrically heated and/or anti-fogged
The three pilot windshields are electrically anti-iced and anti-fogged
The clearview and overhead 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
**Note: Airfoil anti-ice WILL operate with nosegear extension, however, normal procedures do not require its use prior to takeoff. Use airfoil anti-ice whenever icing conditions exist in flight.
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
OFF – Turns off windshield, clearview and overhead anti-fog
ON – Turns on windshield, clearview and overhead anti-fog
Recall function of the WINDSHIELD ANTI-ICE switch
OFF – Turns off windshield anti-ice
ON – Turns on windshield anti-ice
