Winter Ops Flashcards

1
Q

When is runway considered contaminated?

A

> 25% covered

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2
Q

How and when do you complete an engine run up?

A

In icing conditions run engines at 70% for 30s every 30 mins

When freezing precipitation every 10 mins

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3
Q

What do you do if holdover time expires?

A

If no precipitation take off

If precipitation, visual inspection carried out and possibly de ice again

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4
Q

What are the exceptions to the clean aircraft concept?

A

3mm of frost on the underside of the wing

Thin hoar frost allowed on fuselage, radome and engine cowl

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5
Q

When should EAI be selected after start?

A

Temp below 10*C and visible moisture or if icing conditions expected below accel altitude

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6
Q

If structural ice expected, what minimum approach speeds should be flown in conf 3 and conf full?

A

Conf 3 = VLS+10

Conf Full = VLS+5

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7
Q

Describe characteristics of type 1 de-icing fluid

A

Orange colour
Non thickened
Short holdover time
Generally used for de icing

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8
Q

Describe the characteristics of type 2 de-icing fluid

A

Straw coloured
Contains thickening agent
Lowest usable temp are approx -25*C

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9
Q

Describe characteristics of type 4 de-icing fluid

A

Green in colour
Contains thickening agent
Thicker than type 2 with longer holdover times

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