Exam Review: PNEUMATIC Surface De-Ice

Question 1

What ATA chapter is DE-ICE systems?

Answer 1

ATA 30

Question 2

Where are the BOOTS usually used?

Answer 2

General Aviation

Turbo prop

Question 3

Where do are the boots located on the aircraft?

Answer 3

Leading Edge

Stabilizers

Question 4

On PISTON engines how is air for the BOOTS provided?

Answer 4

VANE TYPE VACUUM PUMP

TURBO CHARGER

Question 5

On TURBINE engines how is the air for the boots provided?

Answer 5

COMPRESSOR BLEED AIR

Question 6

What are the 2 types of VACUUM pumps?

Answer 6

Dry

Wet

Question 7

Dry pumps are used for?

Answer 7

MODERN aircraft

Question 8

What do WET pumps need and why?

Answer 8

Air/Oil separator to prevent oil from contaminating the boots

Question 9

This valve is solenoid operated and dumps pressure overboard when not in use

Answer 9

Dump/Control valve

Question 10

What does the SHUTTLE/DISTRIBUTOR valve do?

Answer 10

Directs pressure/vacuum to boots and is controlled by TIMER

Question 11

This valve controls the shuttle/distributor and ensures proper inflation sequence and duration

Answer 11

TIMER/CONTROL unit

Question 12

What is the AIR INFLATION pressure?

Answer 12

15-20 psi

Question 13

The vacuum sides pressure?

Answer 13

4.5-5.5” Hg

Question 14

What is the inflation time?

Answer 14

36s

Question 15

What is the total cycle time if it is fast? What bout slow?

Answer 15

1min

3min

Question 16

How are the boots kept on the leading edges?

Answer 16

Bonded
Glued
Screwed