Anti Ice/Rain

Question 1

Recall conditions which require the use of engine anti-ice

Answer 1

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

Question 2

Recall engine run-up requirements during icing conditions

Answer 2

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

Question 3

Recall function of the AIR DATA Heat pushbutton (“OFF” amber light)

Answer 3

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

Question 4

Recall function of the WING ICE DET switch (RESET, TEST)

Answer 4

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

Lim: Do not takeoff with WING ICE DETECTED alert displayed

Question 5

Recall which cockpit windows are electrically heated and/or anti-fogged

Answer 5

• The three pilot windshields are electrically anti-iced and electrically
anti-fogged
• The clearview windows are also anti-fogged

Question 6

Recall which control surfaces are anti-iced with engine bleed air

Answer 6

Wing slats and horizontal stab leading edge—from either or both engines

Question 7

Recall which engine components are anti-iced

Answer 7

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

Question 8

Recall function of the WINDSHIELD ANTI-FOG switch (OFF, ON)

Answer 8

OFF – Turns off windshield and clearview anti-fog
ON – Turns on windshield and clearview anti-fog
Available for flight or ground use

Question 9

Recall function of the WINDSHIELD ANTI-ICE switch (OFF, ON)

Answer 9

OFF – Turns off windshield anti-ice

ON – Turns on windshield anti-ice. Available for flight or ground use