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Mesa > CRJ Oral study guide > Flashcards

CRJ Oral study guide Flashcards

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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
When will the fuel system auto transfer fuel?
200 lbs imbalance
26
What does the illumination of the FAIL on the gravity switchlight indicate?
Not in commanded position
27
What does the illumination of the FAIL XFLOW switchlight indicate?
Bidirectional pump failure/valve failure
28
What happens if you move the WING A/I CROSS BLEED switch from the normal position to FROM LEFT or RIGHT?
Isolation valve closes and cross flow valve opens to allow bleed air from opposite side engine
29
If you select the BLEED VALVES knob from AUTO to CLSD, which valves will you close?
APU LCV and both engine bleed valves
30
If you want to use the APU as your primary bleed source, how would you do that?
Bleed source - APU ISO - Open Bleed Valves - Manual
31
First flight of the day - before you start the APU, what must be done?
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
32
What is the minimum battery voltage to start the APU? Where would you verify that?
22 volts | Electric page
33
What are the APU starter limitations?
3 start attempts in an hour, 2 min wait between start attempts
34
What does the illumination of the PUMP FAIL on the PWR FUEL switchlight indicate?
APU fuel pump failure
35
What does the illumination of the SOV FAIL on the PWR FUEL switchlight indicate?
In uncommanded position
36
What are the APU priorities?
Primary - electrical | Secondary - pneumatic
37
What is the top altitude we can use the APU for electrical loading?
FL410
38
What is the top altitude for APU bleed air extraction?
Depends on passenger loading (FL310 or 250)
39
Where is the APU fuel supplied from?
Left fuel collector tank
40
If the APU fuel pump fails, will the APU shut down?
No (bypass fuel)
41
For an unattended APU fire on the ground, what will happen? In flight?
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
List the steps for normal engine start.
And
43
During normal engine starts, what kind of protection does FADEC provide?
Hot and hung start protection
44
During a normal engine start, the starter should cutout at? If it does not?
1. 50% N2 | 2. Press stop switch
45
For a normal engine start, what is the starter limitation?
1-2 — 90 sec ON, 10 seconds OFF | 3-5 — 90 sec ON, 5 min OFF
46
EPC for HOT START
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
What is the top altitude we can start an engine?
FL210
48
When are we required to select the CONT IGNITION? When does it come on automatically?
1. Contaminated runways, flight in the vicinity of TS, moderate or greater precipitation, moderate or greater turbulence 2. High angle of attack
49
How is pressurization normal set?
Set field elevation (landing)
50
What does the EMER DEPRESS switchlight do?
Ground - open ground valve | Flight - depressurization of cabin to 14,500’ (CPAM)
51
What does the illumination of the FAULT on the PRESS CONT switchlight indicate?
Both CPCs have failed
52
In the AUTO mode, what does the illumination of the FAULT on a PACK switchlight indicate?
Over pressure or over temperature condition
53
In manual mode, what will usually trigger the FAULT on a PACK switchlight?
<5ºC or >85ºC
54
What is a PACK?
P - Pressurization A - Air C - Conditioning K - Kit
55
What is the limitation for single PACK operation?
FL310
56
What is the limitation on the RAM AIR switchlight? When would we use it?
1. 15,000’ | 2. Unpressurized flight & when the checklist calls for it.
57
What are the three different positions of the CARGO toggle, and what do the different positions do?
OFF - self explanatory AIR - unheated air circulation COND AIR - heating and cooling of the aft cargo compartment
58
What does the illumination of the ICE switchlight indicate?
You are in icing conditions and the wing & cowl A/I switches are off
59
What is the definition of icing conditions on the ground? In the air?
1. 10ºC or less OAT, visible moisture | 2. 10º C or less TAT, visible moisture
60
During taxi operations, when are we required to turn on the cowl A/I? Wing A/I?
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
When the WSHLD HEAT switches are in LOW, what temps are the windshields heated?
24ºC
62
When the WSHLD HEAT switches are in HIGH, what temps are the windshields heated?
Forward 2 panels - 43ºC | Side 2 panels - 24ºC
63
When must we leave the WSHLD HEAT off?
OAT 30ºC or more
64
Oral question - On the ground, with an engine generator online and the probe switches off, what is heated and what is not?
3 pitot heads are heated to 50% Masts are not heated AOA and static ports are heated fully TAT probe is not heated
65
Oral question - what would happen if we forget to turn the probe switches on and we take off?
At WOW, everything comes on.
66
How many fuel pumps are there?
6
67
What temperature are the wings and cowls heated to for A/I?
39ºC
68
When does the anti-skid operate?
35 knots or WOW +5 seconds
69
IRS system configuration time?
7-16 min
70
How many fuel probes per fuel system?
6 probes per wing | 3 probes per center tank
71
Emergency flap inhibit speed?
220 it’s
72
How many hydraulic accumulators are there?
5
73
How many locking pins on each door?
4 on each side | 2 cams on top
74
Minimum fuel for go around?
600 lbs/side
75
First flight of the day - which engine to start? Shutdown? Why?
Left engine - to check for cross flow fuel system
76
What is a DCU?
Data concentrator unit
77
How many GCUs are there?
Generator control unit - 3 Monitors output of generators for fault protection, over/under voltage, over/under frequency, and generator or bus over current
78
What emergency equipment must be on board?
``` Crash ax PBE - personal breathing equipment Flashlights (2) First aid kits AEDs More? ```
79
How many passengers on the main door?
4 or 1,000 lbs
80
How many brake wear pins are there?
4
81
Mach trim vs autopilot?
Describe
82
How is the nose wheel steered?
Hydraulic system 3
83
How many ways to shut off the APU?
5
84
Fuel panel power source? What message on EICAS?
APU battery bus | AUTO XFLOW INHIBIT
85
How many fan blades? What material are they made of?
28 | titanium
86
What does the T2 probe talk to?
FADEC system
87
How are the hydraulic systems cooled?
Systems #1 and #2 are cooled by the air/oil heat exchanger | System #3 is cooled by ambient conditions
88
If the fuel filter to the engine gets clogged, will the engine run? If so, how?
Yes, unfiltered bypass fuel system
89
How is the FADEC system powered?
Above 50% - FADEC alternator on the N2 accessory | Below 50% - Aircraft power system
90
APR one engine only limitation
10 minutes
91
Normal take off power limit?
5 minutes
92
Max power (2 engine) limit?
5 minutes
93
Where is max continuous thrust (MCT) on the power quadrant?
Climb detent
94
Which engine is the master with FADEC?
Left engine
95
When the aircraft is initially powered, what power setting is the engine set to?
Take off power (TO)
96
Cold soaked aircraft (OAT -30° C) that have sat for 8 hrs must have what done before the first start of the day?
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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