Cold Weather, Icing

Question 1

Icing conditions are

Answer 1

Below 10 degrees C, above - 40, visible moisture (visibility in fog less than 1 sm 1600m)

Question 2

Engine ice shedding requirements & procedures

Answer 2

Below 3 degrees C 60% N1 if possible for 30 seconds every 30 min
In freezing rain, heavy snow etc every 10 min or if vibration
Back to idle
On line up same, advise ATC of requirement (thrust up then idle, no rolling start)

Question 3

Fuel frost permitted on upper surfaces

Answer 3

Nil

Question 4

Fuel frost permitted on underside of wing

Answer 4

Up to 3mm? Of uniform frost with no? ridges

Question 5

Ice accretion in clean configuration Vls should be increased by

Answer 5

15 kts

Question 6

Ice accretion in other than clean configuration Vls should be increased by

Answer 6

5 kts

Question 7

WAI u/s in icing conditions in clean configuration Vls should be increased by

Answer 7

10 kts

Question 8

Water to be drained with packs on if temp & Grd time are

Answer 8

Below -5 degrees C over 1:15

Question 9

Water to be drained with packs off if temp & Grd time are

Answer 9

below 0 degrees C and over 1:30

Question 10

Severe icing other than ECAM is indicated by

Answer 10

5mm or more of ice build up

Question 11

Fuel freeze & min temps

Answer 11

Fuel freeze temps (min ops 3 warmer)
JETA -40
JET A1 -47
JP 5 -46
JP 8 -47
N°3 JET -47
TS-1 -50
JP 4 -58
JET B -50