Ice and Rain Protection

Question 1

Automatic ice detection operates when

Answer 1

> 75 kts

Question 2

What does the 2 Ice detectors measure

Answer 2

Liquid water content

TAT

Question 3

When does Pack Ram Air Inlet heat

Answer 3

Automatically applied by signals from the Automatic Ice Detection System

Question 4

What are the positions of the ANTI-ICE selectors

Answer 4

OFF - OFF
AUTO - operates based on the Ice detection system
ON - Manually on

Question 5

Describe the Engine ANTI-ICE

Answer 5

Hot bleed air from the respective eng

supplied to eng core and inlet cowl

operates on grd or air, BUT the AUTO mode does not operate on the ground

Question 6

How do you know Engine anti ice is on

Answer 6

EAI on EICAS N1 digital display

Question 7

Describe the Wing ANTI-ICE

Answer 7

4 electrical thermal mats

on midwing leading edge slats

operates - grd >75 kts
- Air

max 25 deg in auto

(do not use ON when > 10 deg TAT)

Question 8

How do you know Wing ANTI-ICE is on

Answer 8

WAI on EICAS N1 digital display

Question 9

What does Primary Window Heat provide

Answer 9

Exterior anti-ice for the FWD windows only

interior anti-fogging for all windows

Question 10

What does Back up Heat

Answer 10

Anti-fogging to FWD windows

Question 11

When are the Probes heated

Answer 11

when either engine is running

TAT heat is inhibited on the ground

Question 12

Is the ice detector heated

Answer 12

Yes

after eng start to ensure they are clear

Question 13

When is the automatic ice detection inhibited

Answer 13

< 75 kts

Question 14

When does CAC Inlet Anti-ice operate

Answer 14

in air OR

when TAT is = 10 deg

Question 15

When does the Eng anti ice operate

Answer 15

TAT = 10 deg
ON for grd operations (conditions)
AUTO inflight

(on Grd = 3 deg N1 has to be min 40% for 5 sec
for every 60 sec)

Question 16

What is Icing Idle

Answer 16

When Eng Anti icing is operating the EEC with increase the engine idle

Question 17

What conditions will close the eng anti ice

Answer 17

Eng Start
Bleed overtemp
Bleed overpressure
Eng Fire switch pulled
bleed leak

Question 18

How many wing matts in total

Answer 18

24

3 per each slat (4 slats per wing)

Question 19

What happens if a thermal mat fails

Answer 19

system automatically de-powers the mat on the opposite slat to prevent asymmetrical wing icing

Question 20

is there a limitation on the wipers

Answer 20

No airspeed limitation

do NOT operate on dry glass

Question 21

When is the cold wx operations procedure for taxi ?

Answer 21

When both of the following exist, do an engine run-up to minimize ice build-up:

• OAT is 3°C or below and visible moisture (clouds, fog with visibility of one statute mile[1600 m] or less, rain, snow, sleet, ice crystals, and so on).

3 deg or lower
40 N1
5 sec
60 min

Question 22

When in manual engine ant ice what is the temp lim

Answer 22

15 degrees

Question 23

What does ICA on engine display mean?

Answer 23

Ice Crystal Anti ice > 30,000 ft

Question 24

When do you have to use the sure wx app for hot tables

Answer 24

Active frost

No HOTDS

Question 25

What is the representative surface for the 787

Answer 25

Representative surface extends from leading edge of slat to trailing edge of flap between the engine pylon and the evacuation walkway on the left wing

Question 26

How do you request a HOT DR

Answer 26

COMM
Transactions
Other
HOT/XXX. ( airport identification YYZ)

Question 27

What conditions do we see barrel icing?

Answer 27

+5 to -5 with reduced vis due to rain or drizzle or freezing rain or freezing drizzle