Ice And Rain Protection

Question 1

What are the 3 types of Ice Formation and when do they form?

Answer 1

CLEAR ICE or GLAZE – produces on the surface if the temperature of
droplets is between 0 and -10 deg. C

RIME ICE – produces on the surface if the temperature of droplets below -10 C

FROST – Builds on the surface of Aircraft that are parked outside in cold nights

Question 2

What is the difference between the DeIcing and Anti-Icing?

Answer 2

• De-Icing is when there’s an ice
  build up already and then it is removed
• Anti-Icing is preventing ice build-up in the aircraft systems and
  mainly performed during flight

Question 3

What are the different kinds of DEIcing Systems?

Answer 3

Pneumatic De-Icing uses Rubber Boots

Electrical Wing De-Icing uses heating mats in the slats

Chemical De-Icing uses De-Icing fluids shortly before takeoff

Hot Air De-Icing uses hot air blower composed of diesel engine

Question 4

What are the systems that needs an Anti-Icing System?

Answer 4

Wing Anti-Ice, Engine Anti-Ice,
Window Heat, Probe Heat System, Drain Mast Heat System

Question 5

What are the Anti-Icing Systems used for Engine?

Answer 5

Hot Air Engine Anti-Icing and Hot Oil Anti-Icing

Question 6

What is the valve and P/B S/W used in ENG 1 anti-icing?

Answer 6

Engine Anti-Ice Valve 1 is
controlled by the ENG 1 Anti-Ice P/B S/W

Question 7

How many P/B S/W is used for the wing anti-ice?

Answer 7

Only 1 Wing Anti-Ice P/B S/W is
used for both left and right wings

Question 8

What are the four different types of probes on the aircraft that uses antiicing?

Answer 8

Temperature Probe – operates during flight

Pitot Tubes – has low voltage on ground but operates 100% during flight

Static ports and AOA Sensor – operates at least 1 engine is running

Question 9

What is the most important operation rule when operating the Windshield Wiper?

Answer 9

You must never switch on the
windshield wiper when the windshield is dry

Question 10

What is the protection used in
Windshields?

Answer 10

Rain Repellent Fluid

Question 11

What is the ideal contact angle of water droplets in the wind shield?

Answer 11

60 degrees contact angle, it means it is not easy for water droplets to remain on the windshield

Question 12

DOES VERTICAL STAB HAD ANTI -ICE? AND WHY?

Answer 12

YES, BECAUSE IT FIRSTLY HIT ON THE WATER COLD WATER MIST

Question 13

DIFFERENCE OF DE ICING AND ANTI ICING?

Answer 13

DE ICING MAY ICE NA ACCUMULATE ANTI ICING PREVENT ICE

Question 14

3 TYPES OF ICE?

Answer 14

CLEAR ICE 0 TO -10DEG,

RIME ICE BELOW -10 (DOUBLE HORN SHAPE)

FROST OCCURS ON GROUND

Question 15

WHEN DOES AOA PROBES HEAT UP?

Answer 15

When engine is running

Question 16

WHEN DOES DRAIN MAST START TO HEAT UP?

Answer 16

When there’s electrical power

Question 17

WHAT ARE THE SOURCE OF NORMAL POWER DURING FLIGHT?

Answer 17

Engines

Question 18

Where does temperature probe operates?

Answer 18

In flight

Question 19

How many push buttons for both wing anti ice valve function?

Answer 19

Only 1

Question 20

What is the protection used in Windshields?

Answer 20

Rain Repellent Fluid

Question 21

What is the most important operation
rule when operating the Windshield Wiper?

Answer 21

You must never switch on the windshield wiper when the windshield is dry

Question 22

What are the Anti-Icing Systems used for Engine?

Answer 22

Hot Air Engine Anti-Icing and Hot Oil Anti-Icing