Cold Weather Ops

Question 1

Use icing conditions when

Answer 1

OAT <= 10 degree celsius and

Visible moisture (clouds, fog (visibility < 1 sm), rain, snow, sleet, ice crystals)

or

Ice, snow slush, standing water on the ramps, taxiways or runways

Question 2

Clear ice

Answer 2

Made out of super cooled droplets

Forms at or just below 0 C (0 to -15 degrees)

Question 3

Rime ice

Answer 3

Forms in low temperatures

Low concentration of super cooled droplets

Question 4

When is assumed temperature not allowed?

Answer 4

On contaminated runways

Question 5

Formula for aquaplane

Answer 5

V = 8,6 x wurzel(P)

Eg tire pressure 200psi

V = 8,6 x wurzel(200)
V = 121 kts

If v > 121 —> aquaplaning will occure

Question 6

What kind of T/O on a contaminated rwy

Answer 6

Rolling take off, when practicable, to minimize ingestions of contaminants into the engine

Question 7

What is LOUT

Answer 7

Lowest operational us temperature

Consider wing skin temperatures may be lower than the OAT

Question 8

Type I color

Answer 8

Orange

Question 9

Type II color

Answer 9

Yellow

Question 10

Type IV color?

Answer 10

Green

Question 11

What to do if fuel temperature is near the minimum

Answer 11

Increase airspeed, change altitude or deviate to a higher airmass

TAT increases approximately 0.5 to 0.7 C for each .01 Mach

In extreme conditions it might be necessary to descend as low as FL250

Question 12

Altitude correction if temperature at or below

Answer 12

0 C

Correct FAF and MDA/ DA