Ice And Rain Protection

Question 1

What is normal de-ice system pressure?

Answer 1

18PSI

Question 2

DE ICE PRESS

Answer 2

<5.5PSI. use ISO function to isolate the side thats leaking. Use Manual mode and exit icing.

Question 3

What does the ISO function do?

Answer 3

splits the 1 and 2 systems to isolate the side with a leak

Question 4

What flap setting must you use when holding in icing?

Answer 4

flap up (0deg)

Question 5

What is the total inflation time of the wing anf tail boots?

Answer 5

6 sets x 6sec each = 36sec.

Question 6

What is the cycle time of the SLOW airframe setting?

Answer 6

4mins

Question 7

What is total cycle time of the FAST airframe setting?

Answer 7

1min

Question 8

How long will the boot inflate for in manual mode

Answer 8

Still secs to inflate, but will stay inflated until switch is moved.

Question 9

How would you know if a boot was not inflating?

Answer 9

No green indicator light (pressure switch at 15psi)

Question 10

What should you do if a boot doesnt inflate?

Answer 10

consult QRH - check advisory lights and either continue if bulb is blown or if bulb functions, exit icing conditions. Max flap for LDG 15deg.

Question 11

how many prop timers are there?

Answer 11

2

Question 12

What is the power source for the prop heat?

Answer 12

115VAC

Question 13

What are the durations for above -10deg and below -10deg settings? (prop heat)

Answer 13

above -10: on duration 10secs, rest 1min (70sec cycle)

below -10: on duration 20sec, rest 1 min (80sec cycle)

Question 14

How would you know a prop heater was inop? QRH?

Answer 14

Light not on.

test the light (advisories) + swap timers, then C/L max + exit icing conditions or continue.

Question 15

What are the power sources for the pitot heats?

Answer 15

L ess(1), R Main(2)

Question 16

what are the power sources for the static heat?

Answer 16

L/R main respectively

Question 17

If the pitot heat switches are left on after shutdown with GPU connected will the heaters still be on? what about on battery power only?

Answer 17

yes, also yes.

Question 18

Will the static ports be heated if the main battery switch and batt master is on?

Answer 18

R YES, L no (unless tied)

Question 19

If pitot switch is OFF will the caution light be on?

Answer 19

Yes

Question 20

how would you know if a static heat has failed?

Answer 20

check on the walkaround

Question 21

ELEV HORN HEAT

Answer 21

the primary heat element in the elevator horn has failed - exit icing
also on during icing test

Question 22

How can you change the elevator horn heat to the second element?

Answer 22

manually in the tail hatch on the ground only

Question 23

WSHLD HOT

Answer 23

Front window(s) over 42degrees, auto off. Cycle to warm and back to norm to reactivate.

Question 24

What is valve heat for?

Answer 24

to prevent icing of the distributor valves and venting valves (auto on when deice on + below 10deg)

Question 25

what powers the valve heat?

Answer 25

L/R SEC buses

Question 26

How are the AOA vanes heated? when will they have power?

Answer 26

115VAC, when props unfx

Question 27

if an AOA vane is unheated what caution will illuminate>

Answer 27

STALL SYST FAIL + PUSHR SYST FAIL

Question 28

what wont work if one AOA vane fails?

Answer 28

One shaker, Stick pusher, F/Slow indicator.

Question 29

What should you do if you encounter severe icing in flight?

Answer 29

QRH -(AP off, C/L max, P/L as req to maintain minimum 160kts, exit severe icing)

Question 30

INCR REF SPEED flashing

Answer 30

When prop heat on but incr ref speed switch not on + above 400ft rad.

Question 31

SIDE WDO HOT

Answer 31

Lh side window overheat. no action - auto reset

Question 32

prop heat and window heat 115vac phases?

Answer 32

A/B prop pairs
C window
all L/R on respective sides

Question 33

When can we use the window wipers?

Answer 33

On the ground only

Question 34

what powers the window wipers?

Answer 34

L/R SEC bus

Question 35

When do we need to check the de-ice system?

Answer 35

first flight of the day, in climb pref.

Question 36

Speeds when operating in ice? climb, holding/level/descent and for severe icing

Answer 36

Vclimb +15
V climb+20
Minimum 160 - no AP, exit severe icing immediately