Ice & Rain

Question 1

Bleed air is used for:

Answer 1

Engine Cowl and Wing anti-icing

Question 2

Ice detection probes are:

Answer 2

Electrically de-iced

Question 3

How does an Ice Detection Probe work?

Answer 3

The probe vibrates at a high frequency, when ice forms on the probe, the frequency is dampened and ice is detected.

For every 60 seconds of operation, the probe is heated for 5 seconds to melt off the ice so it can continue to detect icing conditions.

Question 4

With the Wing and Cowl Icing off, and ice is detected, what message and light indications will you get?

Answer 4

ICE caution message is displayed and the ICE DET switchlight on the ANTI-ICE control panel illuminates

Question 5

What happens to the ICE caution message on EICAS when Wing and Cowl Anti Icing is turned on and operating?

Answer 5

The ICE caution message turns into an Advisory message

Question 6

When the airplane is clear of icing, what happens to the ICE advisory message?

Answer 6

After a pre-determined set of time with no ice being detected, the ICE advisory message goes away

Question 7

Do the side windows in the cockpit only operate at a low setting?

Answer 7

Yes, since they only have de-mist, and de-fog capabilities

Question 8

What is the HIGH setting used for on the windows in the cockpit?

Answer 8

The high setting is only for the left and right windshields and is for shedding Ice accumulations

Question 9

The left and right Pitot/Static probes are heated how?

Answer 9

Electrically

Question 10

The Ice Detector switch/light illuminates amber to indicate aircraft entry into icing with:

Answer 10

Wing and/or cowl anti-ice off

Question 11

The windshield wipers have two control panels, one for the captain and one for the co-pilot. Do the wipers operated seperately or together?

Answer 11

With either the Left or Right control panel selected on, BOTH wipers work together, regardless if the other panel is set to off

Question 12

What determines the speed the wipers work at?

Answer 12

The last input from either wiper control panel determines the operating speed and or mode

Question 13

At what point does the ADSCH (Air Data Sensor Heater Controls) energize all probes and sensor heaters regardless of probe or generator switch position?

Answer 13

Weight Off Wheels(Air Mode)

Question 14

When an engine generator is supplying the electrical buses and the probe
switches are OFF the ADSHC applies half power to which probes when in ground mode?

Answer 14

The three pitot heads.
No other probe receives power. Selecting the probe heater switches to ON, continues to supply half power to the three pitot heads but full power is applied to the standby static ports and AOA sensors. The pitot bases and TAT are not heated.

Question 15

What does the DET TEST switchlight test when pressed?

Answer 15

• Ice Detectors
• Air Data Probes
• Sensor Heaters

Question 16

How are the Piccolo tubes in slats 1,2 and 3 interconnected?

Answer 16

Flexible Connectors

Question 17

How many temperature sensors are used for the Wing Anti Ice?

Answer 17

• 8 sensors in total
  
  • 4 in each wing
    
    • 2 inboard
    • 2 outboard

Question 18

What are the dual functions of the temperature sensors mounted outboard near the wing tips for Wing Anti Ice?

Answer 18

The Outboard sensors are used to detect:

• Detect insufficient temperature
• Detect failure of the Piccolo tubes

Question 19

What are the dual functions of the temperature sensors mounted inboard near the wing rot for Wing Anti Ice?

Answer 19

The inboard sensor supplies the temperature data used by the AILC to:

• modulate the wing anti-icing valves.
• The sensor also detects when the wing overheats (WING OVHT warning message)

Question 20

What occurs with the Windshield Heat on LOW?

Answer 20

All 4 panels are heated to 24c

Question 21

What occurs with the Windshield Heat on HIGH?

Answer 21

Side windows are heated to 24c

Windshields are heated to 41c

Question 22

What is a good ICE detector test indication?

Answer 22

1. ICE caution message
2. ICE switchlight illuminated
3. ADS HEAT TEST OK advisory message

Question 23

When is wing anti ice required to be on during flight operations?

Answer 23

TAT <= 10c in visible moisture with airspeeds < 230 kias (except when SAT is <= -40c) or when ice is annunciated

Question 24

When is cowl anti-ice required to be ON during flight?

Answer 24

TAT <= 10c in visible moisture (except when SAT is <= -40c) or when ice is annunciated

Question 25

If Type II, III, or IV deicing fluid has been applied, when do you turn on wing anti-ice departing an airport?

Answer 25

Just prior to increasing thrust for takeoff

Question 26

When must the 90% HOTS card be used?

Answer 26

If the Slats / Flaps are extended in the takeoff config during de-icing

Question 27

After deicing/anti-icing the crew notes a decrease in the intensity of precipitation. The Captain should;

Answer 27

Continue to observe HOT based on previously reported conditions

Question 28

T/F The deice/anti-ice process can be expedited by mixing type I and Type IV fluid prior to deice.

Answer 28

False

Question 29

Deice tables can be found in;

Answer 29

GOM

Question 30

Determine HOT for following conditions: OAT -2C, Light snow, Type IV Killfrost ABC-s plus, Concentration 100% (Look in the GOM)

Answer 30

02:05-03:00

Question 31

Required communications after deicing must include:

Answer 31

* Brand of anti-ice fluid (If type II or IV) * The start time of the last application * Type of fluid

Question 32

T/F The flight crew is not authorized to complete a pretakeoff contamination check with the intent of extending HOT.

Answer 32

True

Question 33

Deicing should be completed with the flaps extended if during preflight

Answer 33

Frozen precipitation has been detected in the gaps of control surfaces

Question 34

Prior to takeoff within the derived holdover time, The crew shall visually check for ice and snow accumulation on aircraft surfaces. This check can be accomplished from:

Answer 34

* The cockpit * The cabin

Question 35

The _______________ has the final responsibility to ensure the aircraft is ready for flight.

Answer 35

Captain

Question 36

Type one fluid (thin fluid) is heated and primarily used for:

Answer 36

deicing

Question 37

Failure to adequately remove all contaminants from critical surfaces can result in:

Answer 37

* Decreased Lift * Increased stall speeds * Trim changes

Question 38

The post deice check would normally be completed by:

Answer 38

The deice agent

Question 39

In icing conditions, a thorough inspection of all areas where adherence of contaminants could affect normal systems operations is critical. This would include:

Answer 39

* AOA vanes. * Pitot tubes. * Fuel vents.

Question 40

"Hard Wing" aircraft require a _________ \_\_\_\_\_\_\_\_\_\_\_to assure contaminants are detected

Answer 40

Tactile Inspection

Question 41

Who is responsible to ensure that the aircraft is free from snow, ice, slush or frost contam- ination prior to each takeoff?

Answer 41

Captain

Question 42

T/F Type I Deicing fluids are heated prior to application.

Answer 42

True

Question 43

T/F On the ground, hoar frost will appear as a thin uniform deposit or ice with a fine white crystalline texture.

Answer 43

True

Question 44

Type I deice fluids are primarily: (a) Orange (b) Clear (c) Blue (d) (a) and (b)

Answer 44

A