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Mesa > CRJ Oral study guide > Flashcards

CRJ Oral study guide Flashcards

1
Q

What does the AVAIL illumination on the AC switchlight indicate?

A

External power is available on the AC system

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2
Q

Where does the DC service switch get power from?

A

APU battery direct bus

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3
Q

Why do we not leave the airplane in the service configuration using the DC service switch?

A

To prevent battery run down

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4
Q
  1. With the battery master switch on (No AC power established) which screens come online?
  2. What is the limitation?
A
  1. ED 1 & 2

2. 5 min

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5
Q

What does the FAULT illumination on the IDG switchlight indicate?

A

High overtemperature (186°C) condition or low oil pressure

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6
Q

What does the DISC illumination on the IDG switchlight?

A

Solenoid separation of the drive shaft in the IDG

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7
Q

How can an IDG be disconnected?

A

Automatic or Manual

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8
Q

Explain the auto disconnect of an IDG

A

Over torque (shear shaft break) or over temperature condition

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9
Q

What does the illumination of the AC ESS XFER switchlight indicate?

A

Not powered by AC bus 1

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10
Q

What does the illumination of the FAIL on the AUTO XFER switchlight indicate?

A

Generator control unit (GCU) —
detected over current condition
One generator off line
Auto XFER inhibit

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11
Q

What does the illumination of the OFF on the AUTO XFER switchlight indicate?

A

Manual inhibit

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12
Q

How many generators are installed on the airplane?

A

4

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13
Q

What are the main generators rated at?

A

40 KVA up to FL410

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14
Q

What would cause the ADG to deploy in flight?

A

Loss of A/C power

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15
Q

If the ADG is deployed in, what does it power?

A

AC ESS bus, HYD system 3B pump, slats/flaps, STAB ch 2

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16
Q

What is the purpose of the L and R HYD SOV guarded switchlight?

A

Stop the flow of hydraulic fluid

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17
Q

With the hydraulic switches in AUTO/ON, when will the B pumps operate?

A

With the loss of the primary hydraulic pumps

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18
Q

With the hydraulic switches in AUTO/ON, when will the B pumps operate?

A

Flaps out of 0 position and 1 generator online, respective bus powered

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19
Q
  1. Taxiing on the left engine (right engine off) flaps up, APU running (first flight of the day) switches AUTO/ON, which hydraulic pumps are running?
  2. How much braking is available?
A
  1. 1A & 3A

2. 50%

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20
Q

During normal takeoffs and landings, which hydraulic pumps are operating (AUTO/ON)?

A

All 6 pumps

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21
Q

If there is a failure of an A pump in flight, will a B pump automatically come online?

A

No, flaps must be out of 0 position

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22
Q

How many ways can we transfer fuel?

A

3 - manual, gravity, and auto

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23
Q

What does the INOP on the boost pump switchlight indicate? The ON?

A
  1. Low pressure or inoperative pump

2. Pump is on and partner is also operating

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24
Q

When do the boost pumps operate?

A

When main ejector has low pressure

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25
Q

When will the fuel system auto transfer fuel?

A

200 lbs imbalance

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26
Q

What does the illumination of the FAIL on the gravity switchlight indicate?

A

Not in commanded position

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27
Q

What does the illumination of the FAIL XFLOW switchlight indicate?

A

Bidirectional pump failure/valve failure

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28
Q

What happens if you move the WING A/I CROSS BLEED switch from the normal position to FROM LEFT or RIGHT?

A

Isolation valve closes and cross flow valve opens to allow bleed air from opposite side engine

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29
Q

If you select the BLEED VALVES knob from AUTO to CLSD, which valves will you close?

A

APU LCV and both engine bleed valves

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30
Q

If you want to use the APU as your primary bleed source, how would you do that?

A

Bleed source - APU
ISO - Open
Bleed Valves - Manual

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31
Q

First flight of the day - before you start the APU, what must be done?

A
  1. Cockpit safety check
  2. Battery ON and wait 30 seconds
  3. Fire test (11 lights and FIRE SYS OK advisory message)
  4. Battery voltage check
  5. Fuel pump - ON
  6. Start switch press in
  7. (DIGS) Door open, APU IN BITE, gauges (RPM & EGT), SOV Open
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32
Q

What is the minimum battery voltage to start the APU? Where would you verify that?

A

22 volts

Electric page

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33
Q

What are the APU starter limitations?

A

3 start attempts in an hour, 2 min wait between start attempts

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34
Q

What does the illumination of the PUMP FAIL on the PWR FUEL switchlight indicate?

A

APU fuel pump failure

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35
Q

What does the illumination of the SOV FAIL on the PWR FUEL switchlight indicate?

A

In uncommanded position

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36
Q

What are the APU priorities?

A

Primary - electrical

Secondary - pneumatic

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37
Q

What is the top altitude we can use the APU for electrical loading?

A

FL410

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38
Q

What is the top altitude for APU bleed air extraction?

A

Depends on passenger loading (FL310 or 250)

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39
Q

Where is the APU fuel supplied from?

A

Left fuel collector tank

40
Q

If the APU fuel pump fails, will the APU shut down?

A

No (bypass fuel)

41
Q

For an unattended APU fire on the ground, what will happen? In flight?

A
  1. APU ECU shuts down the APU, 5 seconds later - fire bottle discharges
  2. Fire bell, Master warning, APU FIRE PUSH switchlight illuminates, APU fire bottle illuminates (green switchlight)
42
Q

List the steps for normal engine start.

A

And

43
Q

During normal engine starts, what kind of protection does FADEC provide?

A

Hot and hung start protection

44
Q

During a normal engine start, the starter should cutout at? If it does not?

A
  1. 50% N2

2. Press stop switch

45
Q

For a normal engine start, what is the starter limitation?

A

1-2 — 90 sec ON, 10 seconds OFF

3-5 — 90 sec ON, 5 min OFF

46
Q

EPC for HOT START

A

Affected thrust lever — SHUT OFF
Dry motor — UNTILL ITT IS REDUCED BELOW 120ºC OR STARTER LIMIT, WHICHEVER COMES FIRST
Affected engine, ENG STOP switch — STOP

47
Q

What is the top altitude we can start an engine?

A

FL210

48
Q

When are we required to select the CONT IGNITION? When does it come on automatically?

A
  1. Contaminated runways, flight in the vicinity of TS, moderate or greater precipitation, moderate or greater turbulence
  2. High angle of attack
49
Q

How is pressurization normal set?

A

Set field elevation (landing)

50
Q

What does the EMER DEPRESS switchlight do?

A

Ground - open ground valve

Flight - depressurization of cabin to 14,500’ (CPAM)

51
Q

What does the illumination of the FAULT on the PRESS CONT switchlight indicate?

A

Both CPCs have failed

52
Q

In the AUTO mode, what does the illumination of the FAULT on a PACK switchlight indicate?

A

Over pressure or over temperature condition

53
Q

In manual mode, what will usually trigger the FAULT on a PACK switchlight?

A

<5ºC or >85ºC

54
Q

What is a PACK?

A

P - Pressurization
A - Air
C - Conditioning
K - Kit

55
Q

What is the limitation for single PACK operation?

A

FL310

56
Q

What is the limitation on the RAM AIR switchlight? When would we use it?

A
  1. 15,000’

2. Unpressurized flight & when the checklist calls for it.

57
Q

What are the three different positions of the CARGO toggle, and what do the different positions do?

A

OFF - self explanatory
AIR - unheated air circulation
COND AIR - heating and cooling of the aft cargo compartment

58
Q

What does the illumination of the ICE switchlight indicate?

A

You are in icing conditions and the wing & cowl A/I switches are off

59
Q

What is the definition of icing conditions on the ground? In the air?

A
  1. 10ºC or less OAT, visible moisture

2. 10º C or less TAT, visible moisture

60
Q

During taxi operations, when are we required to turn on the cowl A/I? Wing A/I?

A

Cowl - 10ºC or less OAT in visible moisture or contaminated taxiways/runways
Wing - 5ºC or less OAT in visible moisture — EXCEPT - when type II, III, or IV A/I fluids are used.

61
Q

When the WSHLD HEAT switches are in LOW, what temps are the windshields heated?

A

24ºC

62
Q

When the WSHLD HEAT switches are in HIGH, what temps are the windshields heated?

A

Forward 2 panels - 43ºC

Side 2 panels - 24ºC

63
Q

When must we leave the WSHLD HEAT off?

A

OAT 30ºC or more

64
Q

Oral question - On the ground, with an engine generator online and the probe switches off, what is heated and what is not?

A

3 pitot heads are heated to 50%
Masts are not heated
AOA and static ports are heated fully
TAT probe is not heated

65
Q

Oral question - what would happen if we forget to turn the probe switches on and we take off?

A

At WOW, everything comes on.

66
Q

How many fuel pumps are there?

A

6

67
Q

What temperature are the wings and cowls heated to for A/I?

A

39ºC

68
Q

When does the anti-skid operate?

A

35 knots or WOW +5 seconds

69
Q

IRS system configuration time?

A

7-16 min

70
Q

How many fuel probes per fuel system?

A

6 probes per wing

3 probes per center tank

71
Q

Emergency flap inhibit speed?

A

220 it’s

72
Q

How many hydraulic accumulators are there?

A

5

73
Q

How many locking pins on each door?

A

4 on each side

2 cams on top

74
Q

Minimum fuel for go around?

A

600 lbs/side

75
Q

First flight of the day - which engine to start? Shutdown? Why?

A

Left engine - to check for cross flow fuel system

76
Q

What is a DCU?

A

Data concentrator unit

77
Q

How many GCUs are there?

A

Generator control unit - 3
Monitors output of generators for fault protection, over/under voltage, over/under frequency, and generator or bus over current

78
Q

What emergency equipment must be on board?

A 
Crash ax
PBE - personal breathing equipment 
Flashlights (2)
First aid kits
AEDs
More?
79
Q

How many passengers on the main door?

A

4 or 1,000 lbs

80
Q

How many brake wear pins are there?

A

4

81
Q

Mach trim vs autopilot?

A

Describe

82
Q

How is the nose wheel steered?

A

Hydraulic system 3

83
Q

How many ways to shut off the APU?

A

5

84
Q

Fuel panel power source? What message on EICAS?

A

APU battery bus

AUTO XFLOW INHIBIT

85
Q

How many fan blades? What material are they made of?

A

28

titanium

86
Q

What does the T2 probe talk to?

A

FADEC system

87
Q

How are the hydraulic systems cooled?

A

Systems #1 and #2 are cooled by the air/oil heat exchanger

System #3 is cooled by ambient conditions

88
Q

If the fuel filter to the engine gets clogged, will the engine run? If so, how?

A

Yes, unfiltered bypass fuel system

89
Q

How is the FADEC system powered?

A

Above 50% - FADEC alternator on the N2 accessory

Below 50% - Aircraft power system

90
Q

APR one engine only limitation

A

10 minutes

91
Q

Normal take off power limit?

A

5 minutes

92
Q

Max power (2 engine) limit?

A

5 minutes

93
Q

Where is max continuous thrust (MCT) on the power quadrant?

A

Climb detent

94
Q

Which engine is the master with FADEC?

A

Left engine

95
Q

When the aircraft is initially powered, what power setting is the engine set to?

A

Take off power (TO)

96
Q

Cold soaked aircraft (OAT -30° C) that have sat for 8 hrs must have what done before the first start of the day?

A
  1. Dry motored for 60 seconds
  2. Fan rotation must be verified before start
  3. Thrust reversers must be actuated until the deploy and stow cycle is less than 2 seconds

Mesa (4 decks)

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