Icing/Contamination

Question 1

Holdover time is the

Answer 1

Estimated time the anti icing fluid will prevent the formation of ice and frost the the accumulation of snow.

Question 2

Factors that impact the holdover time

Answer 2

Type and rate of precipitation
Ambient temperature
Relative humidity
Wind direction and velocity
Aeroplane skin temperature

Question 3

4 types of anti ice fluid

Answer 3

Type I - De-Ice Fluid
Type II - Anti Ice Fluid
Type III
Type - IV - (Expensive anti ice fluid) (green)

Question 4

Clean aircraft concept what would be an acceptable condition

Answer 4

Thin hoar frost on the fuselage

Question 5

Factors that cause dynamic hydro planning

Answer 5

The speed of the airplane
The depth of the water
The air pressure in the tires

Question 6

When does the hold over period start for a one step process

Answer 6

At the start of the anti-ice/de ice process

Question 7

When does the hold over period start for a two step de ice/anti ice process

Answer 7

At the start of the anti ice process

Question 8

Who is responsible for establishing procedures for inspecting an aircraft when ground de icing and anti icing

Answer 8

The operator

Question 9

SNOWTAM format for estimated surface friction

Answer 9

Each third of runway - 1 to 5:

Good - 5
Medium/Good - 4
Medium - 3
Medium/Poor - 2
Poor - 1

Question 10

Validity of a SNOWTAM

Answer 10

8 Hours

Question 11

Dynamic hydro planning occurs when the water is deeper than

Answer 11

The tread depth of the tyres