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ATR type Rating > skyblue CBT ice and rain protection > Flashcards

skyblue CBT ice and rain protection Flashcards

1
Q

what does pneumatic air provide air to?

A
  1. wing leading edges
  2. stabiliser leading edge
  3. engine intake
  4. gas paths
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2
Q

where are chordwise boots used?

A

wing leading edges and gas paths

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3
Q

what is used for the engine intakes?

A

annular boot which inflates at the inlets

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4
Q

how is a deflated boot held to the surface?

A

`bleed air venturi effect

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5
Q

what controls inflation of the boots?

A

associated distribution valve

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6
Q

how many dual distribution valves are there?

A

7.

  • 1 each for the intakes
  • 2 on each wing
  • 1 for horizontal stabliser
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7
Q

what gets heated electrically?

A
  • prop
  • windshields
  • probes
  • static ports
  • flight control horns
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8
Q

what powers the prop heat?

A

ACW BUS 1 and 2

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9
Q

What powers the de icing on the TAT, pitot and alpha probes?

A

ACW BUS 1 and 2

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10
Q

what powers the standby pitot tube de icing?

A

STBY 115V ACW

ACW BUS 1

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11
Q

what powers heating for the 2 forward windshields?

A

ACW BUS 1 and 2

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12
Q

what powers heating for the 2 side windshields?

A

DC BUS 1 and 2

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13
Q

what powers de icing for the control horns?

A

ACW BUS 1 and 2

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14
Q

where is the icing evidence probe?

A

under the captains windshield

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15
Q

what controls the icing probe light?

A

nav light switch

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16
Q

where is the ice detector probe located?

A

in between the boots underneatth the left wing

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17
Q

what powers the ice detector probe?

A

ACW BUS 2

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18
Q

What will we get when ice is acrueing on the detector probe?

A

master caution and icing annunciation

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19
Q

when is the aural alert chime for the icing probe inhibited?

A

when the de ice boots are activated

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20
Q

when will the ICING light illuminate?

A

when 0.5mm of has have accrued on the probe. at this point a heat cycle will be started to remove the ice and start the process again

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21
Q

will the icing probe detect supercooled droplets

A

not reliably

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22
Q

what provides air for the engine and wing antic icing?

A

high pressure bleed system

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23
Q

where is HP bleed air tapped for the icing system?

A

before the bleed valve

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24
Q

can low pressure air be used for de icing?

A

no

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25
Q

what opens de ice valves?

A

pushing the AFR AIR BLEED valve to on

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26
Q

what delivery pressure do the icing valves deliver through modulation?

A

20.3psi

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27
Q

does the position of the bleeed valves affect position of te icing valves?

A

no

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28
Q

where does air travel after the icing valve?

A

dual distribution valves which are electrically powered and pneumatically operated

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29
Q

what powers the left dual distribution valves?

A

DC EMER BUS

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30
Q

what powers the right dual distribution valves?

A

DC BUS 2

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31
Q

where to the dual distribution valves for the inlet split air to?

A

engine intake boot

engine throat boots

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32
Q

what does the S flow gas path system do?

A

ejects inlet ice overboard

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33
Q

what do shutoff valves isolation downstream of the dual distribution valves do?

A

prevent air from entering the de icing system if there is a leak downstream

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34
Q

what do the isolation valves connect?

A

connect pneumatic air supply from each engine to a common manifold. this allows rhe system to remain operative when OEI

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35
Q

what powers the isolation valves?

A

DC ESS BUS

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36
Q

when are the isolation and de ice valves open?

A

AFR AIR BLEED button pushed to on

37
Q

what does the common manifold supply air to?

A

wing and stabiliser distribution valves

38
Q

what determines icing cycles with the mode selector in auto?

A

ADCs

MFCs

39
Q

what are the wing and stabiliser de icing systems controlled by?

A

AIRFRAME pushbutton and MODE SEL AUTO pushbutton

40
Q

in what order do the boots cycle?

A
  1. intake boots A
  2. intake boots B
  3. outer boots A
  4. outer boots B
  5. inner boots A
  6. Inner boots B

7 stabiliser boots A

8 stabiliser boots B

41
Q

what controls the A boots

A

MFC 1

42
Q

what controls the B boots?

A

MFC 2

43
Q

in auto, how often will the boots cycle if temperature is greater than -20?

A

60 seconds

with a 20 second dwell period between each inflation

44
Q

in auto, how often will the boots cycle if temperature is less than -20?

A

180 seconds

140 second dwell period between each inflation

45
Q

when is horn anti icing inhibited?

A

on the ground

46
Q

what powers the anti icing control panel?

A

DC EMER BUS

47
Q

What does green ICING AOA on the FMA and on he ice detector panel mean?

A

staling AOA threshold has been lowered by selection of horn anti icing

48
Q

how can the green ICING AOA light be extinguished?

A

manually by pressing the HORNS button when clear of icing

49
Q

what blade heating elements are electrically connected?

A

every other blade

50
Q

in normal operation how are the props heated?

A

in a similar fashion to the engine and wing de icing

51
Q

how do we select high power prop anti icing?

A

MODE SEL SAT less than -10C button

52
Q

what is the prop heating cycle in the low power cycle?

A

Prop 1 blade: 1/3/5

prop 1 blade 2/4/6

and then repeated on the other prop.

10 second cycles

53
Q

wha is the interval between prop heating cycles in the low power cycle?

A

10 seconds

54
Q

when is the low power prop heating cycle used?

A

between 0 and -10C

55
Q

when can we manually control the prop heating cycle with the MODE SEL SAT -10 button?

A

MODE SEL button in manual

56
Q

how does the high heating cycle for the props vary from the low?

A

20 seconds of heat and no pause between cycles

57
Q

when is the high heating cycle for the props used?

A

between -10 and -30

58
Q

below what temp do supercooled droplets cease to be a problem?

A

-30

59
Q

what does the temperature controller on the windshield maintain on the inside and outside plies of the windshield?

A

outside: above 2C

inside: above 21C

60
Q

what are the side windows heated to?

A

above 20C

61
Q

what powers the side window heat?

A

DC BUS 1/2

62
Q

What are static ports powered by?

A

DC BUS 1 and DC BUS 2

63
Q

when is TAT probe heating inhibited and not monitored?

A

on the ground

64
Q

when does the FWS not monitor static port heating?

A

in flight

65
Q

what is the captains windshield wiper powered by?

A

DC ESS BUS

66
Q

what is the FO’s windshield wiper powered by?

A

DC BUS 2

67
Q

what is max windshield wiper speed?

A

above 160 knots

68
Q

when will the icing label flash?

A

whe ice is detected with horn or airframe anti ice selected off

69
Q

what does an amber A-icing detect caution mean?

A

ice detector probe has failed

70
Q

what signifys a fault detected during anti icing test?

A

A ICING DETECT, master caution and single chime

71
Q

when will the cyan AIRFRAME on the mfd flash?

A

when the system is still on 5 minutes after 0 ice accretion detected

72
Q

when does a fault illuminate on a de icing push button?

A
  1. incorrect inflation sequence of boots A and B
  2. no or low bleed pressure downstream of the vale with the system selected on
  3. airbleed push button off with temperature greater than 230C
73
Q

when will airframe de icing not be available?

A

with AFR AIR BLEED pushbutton selected off

74
Q

when will an AFR AIR BLEED fault illuminate?

A
  1. air pressure downstream of de ice valve is less than 14psi for more than 10 seconds
  2. temp greater than 230C
75
Q

what does pressing the AIRFRAME push button do?

A

signals the MFC to start a de icing cycle

76
Q

what does a FAULT ON THE AIRFRAME push button mean with a master caution?

A

when a distribution valve is commanded closed but pressure still exists downstream

when the valve is open but commanded closed

77
Q

what is automatically activated if the MODE SEL button displays a fault?

A

FAST mode. button is also disabled

78
Q

when does a FAULT show on the MODE SEL button?

A

MFC 1B or 2B failure

CPM failure

IOM failure

79
Q

what does the emergency mode do throught the de icing override push button?

A

sets a timing cycle of 60 seconds and OVRD displays in blue

80
Q

what does a fault on the DE ICING OVERRIDE button mean?

A

failure of both MFC resulting in incorrect boot inflation

81
Q

when will a FAULT show on the horn buttons?

A

when a horn is not powered when it should be

82
Q

when does a FAULT show on a prop anti icing button show?

A

when there is a failure of one of the heating elements

83
Q

what does aircraft performance monitoring (APM) monitor?

A
  • aircraft drag when in icing conditions
  • aircraft cruise speed
  • minimum severe icing speed is respected
84
Q

when is apm activated?

A
  • airframe icing on
  • icing AOA light on
  • ice accretion detected
  • less than 10C
  • clean config
  • both engines operating
85
Q

where does the APM get weight info in order to compare actual drag with theoretical drag?

A

FMS or an estimation

86
Q

how will the APM signal an abnormal drag increase?

A

DGD PERF and master caution

87
Q

when will the APM generate an amber INCREASE SPEED caution?

A

when lower than minimum severe icing speed +2

88
Q

when will the APM generate a cyan CRZ SPD LO?

A

cruise speed is less than 10 below max cruise speed, and there is a small drag increase

89
Q

how is APM controlled?

A

APM push button

ATR type Rating (22 decks)

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