ICE AND RAIN Protection

Question 1

Wing Anti-ice switch: We have some planes with a rotary switch and others with an alternate action switch.
How is the WING Anti Ice used?

Answer 1

Use WING AI as a de-icer primarily.

Question 1

How is the wing heated?

Answer 1

WING uses bleed air for the THREE outboard slats.

Question 2

Can wing anti ice be used on the ground?

Answer 2

It is operated in flight only; inhibited on the ground.

Question 2

The VALVE Light is a?

Answer 2

DISAGREE light.

Question 3

What if we landed with the WING AI on?

Answer 3

The VALVE lights would illuminate;
DISAGREE; when the system turned itself OFF.

Question 4

Some aircraft (-200’s and 477) have an AUTOMATIC WING and TAI system. How do we operate them?

Answer 4

We operate in MANUAL and use AUTO as a safety backup.

Question 5

You get ATIS and the report says:

Calm, 01OVC 1/4mi FG5/5 2981

What System would you turn on and when?

Answer 5

ENG Anti-Ice,

after engine start

Question 6

On the 200’s our Anti-Ice Panel has an auto mode which is selected to auto after engine start. If you encounter icing conditions in flight, do you leave it in AUTO?

Answer 6

No. For fleet continuity reason, select the ENG ANTI ICE to ON

Question 7

On taxi out, the OAT is reported 2°c, what should your pilot action be?

Answer 7

Must complete an engine run up.
Every 30m
60%N1
For 30 seconds
And once before take off

Question 8

The PITOT, AOA, and TAT discrete lights are on the overhead panel. When do they extinguish?

Answer 8

They extinguish when the first engine is started.

Question 9

Are they all powered?

Answer 9

No. The TAT probe light extinguishes, but it is not powered until airborne

Question 10

What are icing conditions?

Answer 10

10 C TAT on the ground or 10 C SAT in the air (or less) with visible moisture (vis < 1 mi) or slush, snow standing water

Question 11

What is the difference between OAT, SAT and TAT?

Answer 11

OAT - Outside Air Temp is the temperature outside (ATIS)

SAT - Static Air Temp is basically the same, but OAT gauges are unreliable above 200 knots, so SAT is used

TAT - Total Air Temp is SAT + Ram Rise (the natural rise in temperature caused by friction in high speed flight

Question 12

Where do we read SAT?

Answer 12

EICAS screen 1

Question 13

What if ATIS said that the temperature was 12C but TAT (on the ground) was reading 10C. Would you turn the TAI on?

Answer 13

YES