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KEY LIME STUDY 2019 > DOJET GROUND SYSTEMS > Flashcards

DOJET GROUND SYSTEMS Flashcards

1
Q

BAGGAGE COMPARTMENT

A

Forward 882 lbs

Aft 771 lbs

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2
Q

Can you pressure refuel with airplane power off?

Why?

A

Yes, power supplied from RH Hot Battery Bus

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3
Q

Boarding Lights Which Battery Bus, and considerations

A

Left hot battery bus.
On timer…3-5 minutes,
If “on” or “off” selected, regular airplane power, not battery

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4
Q

Stair Lights

A

Always on hot battery bus, Left.

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5
Q

Infant Considerations

A

3 allowed, in left row. Not consecutive rows, and not in first, last or exit rows. (It’s because of the drop down mask…2 on each side and there are two seats on the right side of the plane)

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6
Q

Is galley essential power

A

Nope

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7
Q

Which doors have 2 proxy sensors?

A

3…main, galley, & baggage

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8
Q

Exit Doors are

And have how many proxy switches?

A

Type 3…you throw them out

1 proxy switch

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9
Q

Air start, and cabin air doors. What type of switches?

A

Micro switches. They are monitored on the EICAS

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10
Q

Turning radius and required pavement

A

97 (or 100) feet wing clearance…

50 feet of pavement

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11
Q

Minimum Crew

A
  1. Pilot and copilot
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12
Q

Max occupants

A

37

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13
Q

Minimum TAT

A

-52 C

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14
Q

Takeoff and Landing MSL

A

-1000 to 8000 ft

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15
Q

If ambient temperature -30 or below what must you perform?

A

The Hydraulic Leakage Test

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16
Q

What is Cold Soaked, and considerations?

A

-30 or below for 7 hrs or more.

Must perform precautions after prolonged exposure

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17
Q

G limits

A

Flaps Up. -1 to +2.65 G

Flaps down. 0 to +2.0

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18
Q

Max Ramp

A

34789

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19
Q

Max T/O Weight

A

34524

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20
Q

Max Landing Weight

A

31724

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21
Q

Max Zero Fuel Weight

A

28814

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22
Q

Max Altitude

A

31k, or 35k depending on mod

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23
Q

Max Take off altitude

A

8k, or 9200

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24
Q

Runway slope

A

2 degrees up or down

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25
Q

Max tailwind

A

10 knots

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26
Q

Maneuvering Speed Va

A

190

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27
Q

Rough Air Speed

A

200 or .50

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28
Q

VMO

A

< 8k - 270
8-10 - 300
>10k - .66
>34k - .64

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29
Q

Flights above 27k are limited to

A

Less than 3 hrs. (Ozone)

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30
Q

Flaps 12

A

205 mod 10

200 mod 0

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31
Q

Flaps 20

A

180

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32
Q

Flaps 32

A

160

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33
Q

Gear Speed

A

200, all ops

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34
Q

Tire speed

A

180 ground

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35
Q

Wiper speed

A

166

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36
Q

Emergency Light Power

A

4 six volt batteries

28 hrs to recharge!

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37
Q

Emergency lights last how long on battery?

A

10 minutes

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38
Q

Pax oxygen masks auto drop when?

A

Cabin altitude of 13,800

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39
Q

What engine, and thrust?

A

Pratt 306B.

6050 lbs

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40
Q

Vent cycle is how long?

A

60 seconds

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41
Q

Start Valve psi to start

A

Book…12

SOP…21

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42
Q

You get a FADEC minor fault that doesn’t clear….

A

150 hr limit

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43
Q

What the hell is an HMU?

A

Hydro Mechanical Unit

Well, really a fuel controller

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44
Q

Fuel Nozzles

A

24 total

2 for start

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45
Q

Engine Fire bottles

A

2 per engine, Halon

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46
Q

High pressure bleed air station is

A

3.0

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47
Q

Low pressure bleed air station is

A

2.5

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48
Q

What’s on the Accessory Gear Box

A

A bunch of crap.

3 Electric (alternator, alternator, generator)
3 Oil (pressure, scavenge breather)
Starter
Fuel pump (not really, but driven by the same shaft)
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49
Q

Max CONTINUOUS ITT

A

920, no time limit

Takeoff with both turning is also 920 but 5 minute limit

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50
Q

Max transient ITT

A

930 for 20 seconds

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51
Q

Max ITT start

A

950

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52
Q

Do you have to open cross bleed for start

A

No, FADEC does it

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53
Q

Oil Temp Before Takeoff

A

26c

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54
Q

Flight idle

Ground idle

A

65

57

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55
Q

Min oil temp

A

-40

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56
Q

Oil pressure normal

A

35-110 psi

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57
Q

Starter Limits

A 
2 within 10 then 
10 minute cool down.
However....
Motoring 2 minutes accumulated then
20 minute cool down
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58
Q

PSI to start

A

21, company

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59
Q

Ignition cuts off at

A

40% n2

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60
Q

APU master button does what?

A

Opens the APU fuel shutoff valve

Powers the ECU

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61
Q

APU START SEQUENCE

A

Start until 50%

Ready at 94.5% plus 3 to 5 seconds

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62
Q

APU use in flight requires

A

Monitoring of APU on MFD

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63
Q

APU On ground auto shutdown reasons:

A

Over over over, low high loss

Over speed
Over temp
Over current
Low OIL pressure
High OIL temp
Loss of data.  RPM OR EGT
64
Q

When can you restart APU

A

2 minutes after COMPLETE roll down, shutdown.

65
Q

APU bleed air use after start limit

A

Wait one minute

66
Q

APU Bleed Use

A

When engine running do not use APU bleed, except for takeoff if necessary

67
Q

APU Altitudes

A

Operating…30k

Start….20k

68
Q

APU Start Attempts

A

3 attempts, 1.5 minute starter time total
2 minutes in between

1 restart with no CAS MESSAGE
No restarts with a cas message

69
Q

What happens when you cross feed

A

From side turns on elec pump
Cross feed valve opens
Low side electric pump disabled
Low side motive flow valve closes

70
Q

No crossfeed when?

A

Take off approach and landing

71
Q

Max fuel imbalance

A

310

Blue warning at 260

72
Q

Fuel max

A

7800 auto

7970 manual or over wing

73
Q

Refuel de fuel max pressure

A

Auto. 50 psi
Manual 20 psi

Defuel -10 psi

74
Q

Min SAT for fuel

A

-63 C

75
Q

Main Batteries

A

24 volt, 40 amp, Nicad

76
Q

Minimum Battery Acceptance voltage

A

22…must be removed at 18

77
Q

Battery Overtemp

A

70c

78
Q

Can batteries be charged with External Power

A

No, a generator must be online

79
Q

Generator comes online when

A

55% n2

80
Q

Generator rating…Engine, APU

A

28.5 400amp

With ground idle…320amp. Must turn off one pack and recirc fan

81
Q

What is BPCU

A

Bus Power Control Unit

Runs all power

82
Q

External Power

A

Has priority and is sole source of power if selected.
28v
Note…will NOT charge batteries

83
Q

Where does essential bus get power

A

Either DC bus but only one at a time. Bus 1 is the default.
Will switch to bus 2 if power drops 3 volts below the other

OR, the TRU.

84
Q

What are change over relays?

A

They allow switching from one bus to another

85
Q

Engine Driven Alternators

A

400hz 90 amp. “Wild Power”

86
Q

TRU amp limit

A

150amps

87
Q

A/C Powers What?

A

H,H,H,H

Hydraulics and 3 heat (ice probe, windshield, and horn)

88
Q

Inverter 1 powered from

A

Essential DC bus

89
Q

Inverter 2 powered from

A

Non Essential Bus 1

90
Q

Inverter powers what consumers?

A

Talks, Points, or Listens

EGPWS
TCAS
trim pointers
FDR
CVR
91
Q

Battery Life in emergency

A

Battery only. 30 minutes

With TRU, 60, with certain CB’s pulled

92
Q

Hot Battery Bus Items

A

Lights…stair, dome, baggage
Fire…ignition, squibs for all bottles
Fuel..fuel shutoff valves
Brains…avionics memory and BPCU

Right has all above plus
Comms…comm 1 and ACARS
Fuel…Fueling panel

93
Q

What are Jet Packs

A

Back up batteries…24volt. Lead acid

94
Q

Backup Jet Pack

A

Powers the BPCU

95
Q

Emergency Jet Pack

A

Powers Standby Instruments

96
Q

GCU FUNCTIONS

A 
VORLOG
Voltage regulator
Overvoltage protection 
Reverse Current protection
Load Sharing
Over Current 
Ground Fault...,or a short to the rest of us
97
Q

Hydraulic normal pressure and flow

A

3000psi.

2. 5 gallons a minute

98
Q

Hyd. system a items

A

AOL
Alt brakes
Outboard Spoilers
Landing Gear normal

99
Q

Hyd system B items

A 
BEERFIN
Brakes
Emergency Brake
Emergency Gear
Roll Spoilers
Flaps
Inboard Spoiler
Nose wheel steering

Brake Brake, Gear Steer, flaps spoiler spoiler

100
Q

Accumulator Charge minimum

A

1740.

Or 1800 if you like

101
Q

Why two accumulators on Right?

A

One for Parking Brake

102
Q

Parking Brake how many times with no hyd. Pumps?

A

6 Times

103
Q

Hyd reservoir capacity…and what is low, for message

A

1.8 gallons

Low is .6 gallons

104
Q

How does landing gear handle operate gear

A

Electrically controlled, hydraulically actuated

105
Q

What holds gear up

A

Mechanical over center locks. But unlocked with hydraulics

106
Q

How do you select Alt Brake system

A

Manual, or it’s automatic if B system falls below 1900 psi

107
Q

How do you activate alternate auto skid

A

Just select Alt brake. It’s in the system

108
Q

Max Gear Operation Altitude, with exception

A

18k, except emergency descent from above 31k

109
Q

Brake Temp high temp

A

225c

110
Q

Emergency Gear operation, main handle consideration

A

Gear will come down with normal gear handle still up, but some systems will not function normally.

Gear down and locked still works, but…not anti skid, ground spoilers, etc

111
Q

What happens when you push Engine Fire Button

A 
BIGFMS
Bleed Air Shutoff
Ignition off
Generators offline
Fuel Shutoff Valve
Motive Flow Shutoff
Squibs Arm
112
Q

What happens when you push APU Fire Button

A

BGFS

Bleeds off
Generator Offline
Fuel shutoff valve
Squibs Arm

113
Q

Indications during Engine Fire Test

A 
Master Warning
RWP LIGHT
ENGINE FIRE BUTTON LIGHT
SQUIB LIGHT
FIRE BELL
114
Q

What indications during Fail/AGN test

A

AGN Light

Loop Fail illuminates

115
Q

Which Fault Warning Computer generates PFD and T/o config warning

A

FWC 1

116
Q

Autopilot Altitudes…

A

100 ILS
200 NP
500 climb cruise descent

117
Q

Deice cycle times

A

Fast, one cycle per minute

Slow, one cycle per 3 minutes

118
Q

Deice cycle selection fast or slow temps

A

Fast >-20c

Slow

119
Q

Ice detector probe power

A

AC BUS 2 (right side)

120
Q

Can you run deice at ground idle with one engine running?

A

No

121
Q

Bleed Air Pressure at Low and High Power settings

A

High pressure when low, (3.0)

Low pressure when high (2.5)

122
Q

Packs…when are ground cooling fans on

A

Below 120 knots.
Power from its side…right is right…nonessential 1
Left is left..nonessential 2

123
Q

What is the difference between manual temp control and auto?

A

There are no protections in manual except overheat.

124
Q

When must you use high flow mode (cabin air)

A

24 or more people onboard

125
Q

What’s the difference between the front and aft outflow valves

A

Both are pneumatically actuated…but aft is electrically controlled whereas front is pneumatically controlled and actuated.

126
Q

You press dump…cabin will drop to what max altitude.

A

14,500

127
Q

Max differential pressure

A
    1. Mod 3.10

7. 6. Mod 3.50

128
Q

Max negative pressure

A

-0.3

129
Q

When do you get cabin Alt RWP

A

9500 cabin

130
Q

Full 02

A

1825

131
Q

When do pax masks deploy?

A

13,800

02 stops flow when cabin gets to 10k

132
Q

When do you get o2 RWP

A 
45 psi crew
OR
Less than 2.5 psi at pax AND
pax deployed
AND
cabin exceeds 14k
133
Q

When do you get gear warning

A

Less than 400 AGL and less than 45 degree thrust lever angle

134
Q

What causes gear unlock warning

A

Gear position disagrees with handle position

135
Q

Gear Speed

A

200

136
Q

What speed does rudder spring tab unlock

A

160

137
Q

What speed do elevator trim motors switch between slow and fast

A

200

138
Q

Stick pusher inhibited:

A

10 seconds after takeoff and

Within 100 AGL

139
Q

Max differential pressure

A
  1. 9 mod 0

7. 6 mod 10

140
Q

Max differential for landing

A

.40

141
Q

Single Pack ops max Alt

A

25k

142
Q

Max Alt APU only bleed source

A

17k

143
Q

Max Attitude difference between PFD’s and standby attitude indicator

A

3 degrees. No takeoff if exceeds

144
Q

FADEC Minor time limit

A

150 hrs

145
Q

Takeoff inhibit logic for cautions and status

A

After 70 knots…

Waits 20 seconds or 400 AGL, whichever is first

146
Q

It’s hot, >35 c, you shut APU down…leave bleeds on how long before shutting down packs.

A

2 minutes…

147
Q

Icing…avoid what temps

A

-2 to +2

148
Q

EGPWS and wind shear inhibited above

A

1500 AGL

149
Q

PBE’s provide how much time

A

15 minutes, depending

150
Q

Pack overheat

A

220 c

151
Q

1/2 bank limits to

A

17 degrees and only in heading mode

152
Q

Stick pusher inhibited

A

ON GROUND, to 10 seconds after liftoff, also below 100 AGL

153
Q

Takeoff config checks what

A

Flaps
Spoilers
Trim (elevator)
Brake

154
Q

Landing warning when

A

Under 400 ft, thrust levers back, gear not down and locked

155
Q

To work TCAS needs

A 
One transponder
One ADC
One PFD
Radio Altimeter
One MFD

KEY LIME STUDY 2019 (22 decks)

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