Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

AT 354 > APU and Fire > Flashcards

APU and Fire Flashcards

1
Q

what is the engine fire protection system composed of

A

two sensing elements, responders, roof panel indicators, warning bell, two engine extinguisher bottles, two test switches

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is the apu fire protection system composed of

A

four overheat indicators, warning light, warning bell, one fire extinguisher bottle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is the “fire” detection actually sensing

A

overheat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what annunciator goes off when there is a “fire”

A

ENG1/2 FIRE
MWS Lights
warning bell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

how can the fire bell be turned off

A

BELL CNCLD button

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

how many thermal switches are in the rear equipment bay – what is the protocol

A

6 – land asap!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what type of fire extinguisher is in the aft equipment bay

A

dual head, single shot
(right bottle to left engine)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are shot 1 and 2 powered by

A

Shot 1: PE bus
Shot 2: PS 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

how many overheat detectors in the APU

A

4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what happens if the APU overheat detects something

A

fire bell and automatic shut down
APU bottle discharges automatically after shutdown

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is the APU

A

Garrett GTCP36-150W Auxiliary Power System

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

purpose of APU

A

provides DC power and environmental air bleed on ground and flight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what conditions will cause APU shutdown to occur

A

fire, low oil pressure, high oil temperature, loss of power to ECU, ECU overcurrent, loss of EGT signal, high EGT, overspeed, loss of speed signal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

APU MAx RPM

A

110%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

APU max EGT

A

1350F

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

APU max transient EGT

A

1400 to 1500 for 15 seconds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

APU operation altitude

A

0 - 30,000 ft pressure altitude

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

APU starting altitude

A

0 - 20,000 pressure altitude

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

APU shutdown if READY to LOAD light not illuminated within

A

60 seconds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

if both main generators fail can you attempt an in-flight start

A

no!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

When is APU start prohibited

A

when left engine has been shut down for fire or engine failure
if automatic shutdown has occurred
max generator load .8
max transient load 1.2 for less than 10 seconds
refueling operations (but can operate just not start)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

can you have the APU on in icing conditions (ground or air)

A

NOOOOOOOOO apparently

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

how was the APU added to the hawker

A

supplemental typer certificate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

what does the APU provide

A

bleed air and DC electrical power

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

what do you always monitor on the app panel

A

RPM, heat

26
Q

how long “should” the apu run before loading it

A

2 minutes

27
Q

APU On annunciator

A

the apu switch is in the “on” position

28
Q

what is the preferred way to shut down the APU

A

stop button
then off switch
allows monitoring for engine shut down

29
Q

automatic ECU shutdown of apu will occur in flight or on ground if any:

A

apu fire
low oil pressure
high oil temperature
DC power interruption to ECU
overcurrent to ECU
Loss of EGT signal
high EGT above red line
overspeed in excess of 110%
loss of speed signal

30
Q

as a generator, the apu powers

A

Ps2 and PE bus

31
Q

how does the apu power PS1

A

manual closing of the bus tie

32
Q

aPU starter limitations

A

30 seconds on 3 minutes off
30 seconds on 3 minutes off
30 seconds on 30 minutes off

33
Q

max transient EGT

A

1,400 to 1,5000 EGT for 15 seconds

34
Q

do not attempt in-flight start of APU if

A

both main generators have failed
(attempting to start will drain battery)

35
Q

do not attempt start of APU if ____ engine has been shut down due to _____

A

left engine, engine fire or failure

36
Q

max generator load APU

A

.8

37
Q

max transient generator load

A

1.2 for less than 10 seconds

38
Q

simultaneous operation of APU and engine bleed air

A

limited to 1 minutes

39
Q

in flight operation of apu is prohibited in:

A

icing conditons

40
Q

with main air valves and apu bleed operations running simultaneously

A

1 minute

41
Q

no load before placing bleed air load on apu

A

2 minutes

42
Q

between start attempts

A

3 minutes

43
Q

how many lights of fire indication

A

6 or 7
it will be 7 if engine instruments are one Copilot’s PFD

44
Q

fire condition is indicated by

A

ENG 1 or ENG 2 FIRE look up
ENG FIRE annunciator on FIRE panel
FIRE message on N1 gauge
REd MWS lights
Associated HP cock warning lights
fire bell

45
Q

fire bell can be canceled by

A

pressing appropriate BELL CANCEL switch light

locks switch into cancel position - white annunciator

46
Q

where are the fire extinguishers

A

located in rear equipment bay

47
Q

what is a dual head single use fire extinguisher

A

each bottle is capable of discharging its total contents into the ozone one of either engine
both bottles can be discharge into a single engine, or one bottle into each engine

48
Q

SHOT 1 is powered by

A

PE bus

49
Q

SHOT 2 is powered by

A

PS2

recommended to push this one first in event of loss of generator power

50
Q

warning circuits powered by

A

PE

51
Q

fire system:
what does it tell us

A

2 sensing elements, 2 responders, 2 zones

something is hot - NOT that there is a fire

52
Q

fire extinguisher pressure relief indicator

A

located under left pylon

53
Q

if apu detects fire

A

automatically discharges within5 seconds after apu auto shutdown due to overheat

54
Q

Engine fire extinguisher bottles are in the

A

rear equipment bay

55
Q

the exterior preflight check of the fire extinguishers includes

A

checking the condition of two engine discharge indicators

56
Q

the engine fire bell can be silenced

A

by pressing the BELL CANCEL switch

57
Q

which statement is true regarding discharge of the fire bottles

A

when a visual fire warning appears, discharge SHOT 1 first then SHOT 2 if neccessary (Purdue recommends shot 2 before shot 1)

58
Q

the following bus bars provide DC power for engine fire extinguisher operation

A

PE and PS2

59
Q

a portable handheld fire extinguisher is stowed in the

A

cockpit and baggage compartment

60
Q

for a fire in the apu

A

a switch on the apu control panel controls the firing of a separate fire extinguisher

61
Q

the apu fire extinguisher automatically discharges _____ seconds after detection of the apu fire alarm

A

5 seconds

AT 354 (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions