Ice & Rain Protection

Question 1

What is the correct position of the cabin window heat switch prior to takeoff?

Answer 1

Selected IN (legend indicating OFF)

Question 2

If the wing and/or cowl anti-ice system is automatically activated during descent, at what point will it turn off automatically?

Answer 2

When the WoW system shifts to ground mode

Question 3

How are the total air temperature (TAT) probes properly checked prior to flight?

Answer 3

Check for proper aspirated airflow at the aft end of the probe after APU air is selected ON

Question 4

When should the cowl anti-ice system be manually turned on?

Answer 4

Temp < +10C and visible moisture present

Question 5

If engine vibration increases while flying in icing conditions, what is the corrective action?

Answer 5

Decrease engine power to idle for 5 sec, then accelerate the engine to 85% LP RPM for 2 sec

Question 6

When is automatic activation of the cowl and wing anti-ice systems inhibited?

Answer 6

Below 1500’ AGL on takeoff, and above FL350

Question 7

When should continuous airstart ignition be selected ON?

Answer 7

Contaminated runway, heavy rain

Question 8

When does the anti-ice system automatically turn OFF?

Answer 8

L-R ice detect message after 60 sec
Cowl anti-ice after 3 minutes
Wing anti-ice after 5 minutes

Question 9

What is the power source of the windshield heat?

Answer 9

LF/RS - L MAIN AC BUS
RF/LS - R MAIN AC BUS

Question 10

At what temperature does the windshield heat cycle?

Answer 10

Automatically ON at 104F
Automatically OFF at 114F

Question 11

What does it mean if the WINDSHIELD HEAT annunciator lights begin blinking at 1 cycle per second for 90 sec followed by an amber WSHLD FAIL CAS?

Answer 11

1. Over-temp conditions exist
2. Both heat sensors have failed
3. Over-current or no current detected with switch selected ON
4. Current detected with switch selected OFF

Question 12

What does it mean if the WINDSHIELD HEAT annunciation lights begin blinking at 3 cycles per second for 90 sec followed by a blue “L/R (F) or (S) WSHLD FAULT” CAS?

Answer 12

1. Single windshield sensor failure
2. Windshield heating film exceeds acceptable range of operation

Question 13

Which anti-ice probes use bleed air on the ground?

Answer 13

TAT Probes

Question 14

Which probes are powered during HMG operations?

Answer 14

AOA1 - L ESS DC
AOA2 - R ESS DC
L upper / R lower pitot - L/R STBY AC
R upper / L lower pitot - ESS AC BUS Phase A
TAT1 - L STBY AC
TAT2 - R STBY AC

Question 15

Since the COWL and WING ANTI-ICE systems operates in the AUTO mode between 1500’ AGL and FL350, what must be done in icing conditions below 1500’ AGL on an approach?

Answer 15

Nothing, it will remain ON in the AUTO mode until WoW

Question 16

What is the power source of the windshield blower system, and when does it operate?

Answer 16

L MAIN AC - on ground only

Question 17

What is the time limit for the cabin window heat on the ground?

Answer 17

10 minutes ON, followed by 10 minute cooling period (not recommended).