Icing

Question 1

Water can remain super cooled down to - x degrees.

Answer 1

40 degrees.

Question 2

At what speed is ice more likely?

Answer 2

Higher speeds.

Question 3

What ice forms when the water droplets are between 0 and - 15 degrees?

Answer 3

Clear ice,

Question 4

Is clear ice easy or hard to remove?

Answer 4

Hard.

Question 5

What ice forms at water temperatures colder than -15 degrees?

Answer 5

Rime ice.

Question 6

What days can hoar frost form?

Answer 6

Clear days.

Question 7

What happens as fuel cools in the wing and causes icing to occur around the wing at warmer temperatures?

Answer 7

Cold soaking.

Question 8

When does freezing rain occur?

Answer 8

When a cold front passes over a cold front and it rains.

Question 9

When is snow an issue?

Answer 9

On the ground.

Question 10

What ice forms with large super cooled water droplets?

Answer 10

Clear ice.

Question 11

What ice forms in small super cooled water droplets?

Answer 11

Rime ice.

Question 12

Where is high altitude ice crystal icing most common?

Answer 12

At the tops of cumulonimbu.

Question 13

Depending on the freezing level,
Blank ice is possible between FZL to
+5000’, above that blank ice could
occur.

Answer 13

Clear - rime

Question 14

What ice is normally seen in low level cloud?

Answer 14

Clear.

Question 15

What two cloud types is ice most common?

Answer 15

Cumulonimbus/nimbostratus

Question 16

Where can icing occur well above 0’?

Answer 16

Carb ice in a piston engine.

Question 17

Think ahead of the areas where ICI (Ice Crystal Icing) can be expected and avoid thunderstorms in the upwind/downwind direction.

Answer 17

Upwind.

Question 18

Air mass type (heat thunderstorms) - more common in x time.
Frontal type - more common in x time

Answer 18

Summer / winter.

Question 19

At what levels does icing predominantly form in a CB cloud?

Answer 19

Middle

Question 20

What creates Ice crystal icing in cbs?

Answer 20

Sublimation.