Ice & Rain

Question 1

Minimum temperature for manual anti icing operation

Answer 1

-40C

Question 2

Max temp for anti-icing operation

Answer 2

10C

Question 3

Max alt for ops w/ one bleed

Answer 3

15000’

Question 4

SAT limit in cruise

Answer 4

-65

Question 5

TAT limit in cruise

Answer 5

-45

Question 6

Holding speed in icing conditions

Answer 6

200

Question 7

Extension of gear in icing conditions prohibited above:

Answer 7

3000’ AAE

Question 8

What are the “hot air areas”?

Answer 8

Wing and Stab leading edges

Engine air inlet

Question 9

Where is electrically heated?

Answer 9

Windshield
Lavatory water drain / service nipples
Pitot tube, pitot/static tubes, AoA sensor, TAT
Pressurisation static ports

Question 10

Where is anti-icing hot air bled from?

Answer 10

14th HP stage

Question 11

Describe the 3 modes (Auto, ALL, ENG)

Answer 11

Auto - Elec pitot/static heat applied w/ at least one engine running
ENG - commands anti ice system open for engine anti ice at all times
ALL - wing / stab anti ice valve is closed <25kts to prevent structural damage

Question 12

What temperature triggers a windshield over heat message?

Answer 12

65C

Question 13

During the anti ice test prior to departure, what 4 items are you looking for?

Answer 13

4 WHITES OPEN
ICE CONDITION
ICE DET 1(2) FAIL
BLEED 1 (2) LOW TEMP

Question 14

What system provides hot air for the Horizontal Stab?

Answer 14

Left side

Question 15

At what thickness of ice on the ice detector will the AI system kick in?

Answer 15

> 0.5mm - it will activate bleed air
Reduce SPS AoA
Prevents ICE COND Advisory???