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Dash 8 Q400 MILM > Fire Protection & Ice and Rain Protection > Flashcards

Fire Protection & Ice and Rain Protection Flashcards

1
Q

How do the engine fire detection loops work?

A

sensor tubes are filled with helium gas; as temperature increases the gas expands activating an alarm switch

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2
Q

Name the engine fire detection loop zones.

A

Leading Edge Zone (LEZ), Primary Engine Zone (PEZ), Main Wheel Well Zone (MWW)

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3
Q

What indicates the PEZ or LEZ loop failed?

A

FAULT A, CHECK FIRE DETECT, MASTER WARNING

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4
Q

What indicates the MWW loop failed?

A

FAULT B, CHECK FIRE DETECT, MASTER WARNING

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5
Q

If the LEZ loops fails and the PEZ detects a fire will a fire indication result?

A

no, will indicate a fault only

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6
Q

What indicates the APU loop failed?

A

FAULT, CHECK FIRE DETECT, MASTER WARNING

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7
Q

What indicates an engine fire is detected?

A 
PULL/FUEL HYD OFF handle light
MASTER WARNING
CHECK FIRE DETECT
ENGINE FIRE PRESS TO RESET light
Fire bell
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8
Q

Number and location of engine fire bottles

A

two spherical, dual port bottles located in the left wing root

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9
Q

What indicates an engine fire bottle has been depleted or has low pressure?

A

MASTER WARNING
CHECK FIRE DETECT
BTL LOW

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10
Q

Pulling the PULL FUEL/HYD OFF T handle results in:

A

fuel shutoff valve closes
hydraulic shutoff valve closes
FWD and AFT fire bottles arm

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11
Q

Engine fire detection system test lights

A 
PULL FUEL/HYD OFF handle 
MASTER WARNING 
CHECK FIRE DETECT
ENGINE FIRE PRESS TO RESET
FAULT A and FAULT B
Fire bell
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12
Q

Number and location of smoke detectors

A

4, one located above door in fwd baggage compartment, two located on the ceiling of the aft baggage compartment, one located in lavatory

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13
Q

Forward baggage compartment smoke and test indication

A

MASTER WARNING
SMOKE
baggage fwd SMOKE/EXTG switchlight
FIRE BOTTLE FWD BOTTLE ARM

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14
Q

Describe the forward baggage compartment fire extinguishing system.

A

one high rate discharge fire extinguisher bottle installed above fwd baggage compartment, one shared low rate discharge fire extinguisher bottle located in tail section, discharge simultaneously and provide 45 minutes of suppression

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15
Q

Aft baggage compartment smoke and test indication

A 
MASTER WARNING
SMOKE 
baggage aft SMOKE/EXTG switchlight
FIRE BOTTLE AFT BOTTLE ARM
VENT INLT and VELT OTLT CLOSED
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16
Q

Describe the aft baggage compartment fire extinguishing system.

A

one high rate discharge fire extinguisher bottle installed above the aft baggage compartment discharges, one shared low rate discharge fire extinguisher bottle located in tail section discharges approximately seven minutes later and provides 45 minutes of suppression

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17
Q

Describe the lavatory fire protection.

A

lavatory waste bin is equipped with a thermally-activated fire extinguisher bottle mounted in the roof of the waste bin, end caps melt off during fire to discharge into bin

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18
Q

SMOKE warning light

A

smoke in baggage area

19
Q

CHECK FIRE DETECT warning light

A

engine or APU fire or detector loop malfunction

20
Q

Heated components include:

A

leading edges of propeller blades
left, right, and standby pitot/static probes
left and right Angle of Attack (AOA) vanes
left and right engine intake flanges
left and right windshield panels and Captain’s side window

21
Q

How do the ice detection probes work?

A

via the “piezoelectric” principle, probes continuously vibrate at a natural resonant frequency and when ice accumulates the frequency increases

22
Q

Airframe deice system pressure is regulated to:

A

18 psi

23
Q

What controls the inflation and deflation of the deice boot sets?

A

6 Dual Distribution Valves (DDVs)

24
Q

When are the DDVs heated?

A

automatically whenever the SAT is below 5C or the airframe mode selector is in MANUAL

25
Q

What is the purpose of the BOOT AIR ISO switch?

A

checking the integrity of each side of the system individually, or to isolate the left and right sides of the airframe deicing system in the even of a system pressure leak

26
Q

How long is the deicing boot cycle in SLOW?

A

144 seconds (3 minutes); 6 seconds per combination of boots; 36 second on, 108 second dwell time

27
Q

How long is the deicing boot cycle in FAST?

A

60 seconds (one minute); 6 seconds per combination of boots; 36 seconds on, 24 second dwell time

28
Q

What is “adequate” pressure for boot inflation?

A

approximately 15.5 psi

29
Q

Identical left and right Timer Monitor Control Units (TMCU) perform the following functions for their respective propellers:

A

monitor propeller speed
monitor SAT
monitor the propeller deicing system for faults
control the timing and distribution of heating power to respective propeller (to provide adequate ice shedding under varying atmospheric conditions)

30
Q

PROP Select Switch ON

A

will activate the propeller deicing system provided that SAT is at or below 5C and propeller speed is greater than 400 rpm

31
Q

PROPS Select Switch TEST

A

will activate an automatic test sequence during which the propeller heaters are cycled through a sequence for a period of 7 seconds a piece given that the prop speed is greater than 400 rpm (30 second cooling period must be observed between tests)

32
Q

PROP DEICE caution light

A

failure of the left or right propeller TMCU or a malfunction in the left or right propeller heating system

33
Q

Which pitot/static probe uses DC power for heat?

A

standby

34
Q

The engine intake heaters are automatically activated under the following conditions:

A

engine intake bypass door is open AND
engine is running (oil pressure sensor) AND
SAT is below approximately 15C AND
115 volt variable AC power is available

35
Q

Windshield heat ambient temperature limit

A

> 20C

36
Q

DEICE PRESS caution light

A

airframe deice system pressure is too low for deicer boot operation

37
Q

DEICE TIMER caution light

A

timer and monitor unit malfunction

38
Q

ENG ADPT HEAT 1 or 2 caution light

A

malfunction of both engine heating elements

39
Q

PITOT HEAT 1 or 2 caution light

A

PITOT/STATIC PORT heater toggle switch set to OFF or pitot/static port heater malfunction

40
Q

ICE DETECT FAIL caution light

A

ice detectors have malfunctioned

41
Q

SIDE WDO HOT caution light

A

pilot’s side window temperature is more than 52C

42
Q

WSHLD HOT caution light

A

windshield temperature is more than 50C

43
Q

WSHLD CTRL caution light

A

preset threshold temperature is not reached within five minutes of selecting windshield heat ON

44
Q

PITOT HEAT STBY caution light

A

PITOT/STATIC PORTS STBY toggle switch set to OFF or pitot/static port heater malfunction

Dash 8 Q400 MILM (17 decks)

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