Ice & Rain Protection

Question 1

Anti Ice for Ground OPS and T/O

Cowl A/I ON ?

Wing A/I ON ?

Answer 1

Cowl : if OAT <= 10 C and [1] or
[2]

Wing : OAT <= 5 C and [1] or [2]

[1] visible moisture (fog vis <= 1,5 km, rain,
ice crystals etc.

[2] surfaces contaminated (snow, sleet, water
on ground surfaces)

Question 2

Icing Conditions exist in flight if ?

Answer 2

TAT <= 10 C down to -40 C SAT and visible moisture

or

ICE annunciation by ice detection system

Question 3

Use of Type II and IV anti-icing fluids

-> Wing A/I ON when?

Answer 3

Just prior thrust increase for T/O

Question 4

Anti Ice during flight

Cowl A/I ON ?

Wing A/I ON ?

Answer 4

Cowl : if [1] or [2] applies

Wing : if [1] and Airspeed < 230
KIAS or [2] applies

[1] Icing conditions exist in flight if TAT <= 10 C
down to -40 C SAT and visible moisture

[2] ICE annunciated by ice detection system