Ice and Rain Protection

Question 1

The aircraft has a total of _______ ice detector probes.

Answer 1

2

Question 2

The ice detector system uses _______ to detect ice.

Answer 2

Vibration frequency

Question 3

The leading edge slats are heated by _______.

Answer 3

Bleed air

Question 4

True or False: Engine performance during takeoff is affected by the anti-ice system.

Answer 4

True

Question 5

Each windshield consists of _______ sensor(s) and one (1) element.

Answer 5

3

Question 6

The following areas are anti-iced EXCEPT _______.

Answer 6

Leading edge of the engine nacelles (inlet cowl), leading edges of each wing (slats 2,3,4)

Question 7

True or False: When the wing anti-ice system is no longer needed, it must be
manually shut off.

Answer 7

False

Question 8

How long does the anti-ice protection system test last?

Answer 8

Max 60 sec.

Question 9

In the event that an electrical signal is lost, the valve for the engine bleed air anti-
ice system will _______.

Answer 9

Default to the open position

Question 10

True or False: The ADSPs and the Total Air Temperature probes located on the
nose of the aircraft are heated to ensure they deliver correct information to the Air Data system.

Answer 10

True

Question 11

When the selector knob is in the LOW position, the wipers will operate at _______
cycles per minute.

Answer 11

80

Question 12

When the selector knob is in the HIGH position, the wipers will operate at _______
cycles per minute.

Answer 12

125

Question 13

When the selector knob is in the TIMER position, the wipers will operate
intermittently every _______ seconds.

Answer 13

8 sec.

Question 14

True or False: The wipers will automatically stop when operating on a dry
windshield.

Answer 14

True

Question 15

The aircraft’s electrical system is NOT used to heat which of the following
components?

Answer 15

Electrical: Flight deck windshields, Air Data Smart Probes

Question 16

Which of the following statements is correct regarding the engine anti-ice system?

Answer 16

Supplies bleed air to the engine inlet cowl from the 10th stage high pressure bleed duct

Question 17

True or False: The message “ICE CONDITION” will display on EICAS and the Anti-
ice synoptic page whenever the wing anti-ice system is activated.

Answer 17

False

[Ice Detection Probes indication only]

Question 18

True or False: If both ice detectors fail, the ice protection system will become
completely inoperative.

Answer 18

False [manual mode]

Question 19

True or False: If the left engine inlet anti-ice system fails, the cross bleed valve will
open to supply air from the right engine’s bleed system.

Answer 19

False

Question 20

When in flight with a single AC electrical source available, which of the following
will be true regarding windshield heat?

Answer 20

only the left windshield will be heated - if the left windshield heating system fails, the right windshield heating system becomes available

Question 21

True or False: The wing anti-ice system performs its own self-test.

Answer 21

True

Question 22

When does the wing anti-ice system perform its self-test?

Answer 22

First of: 10 min. after takeoff or 10,000 ft