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ADX Practical > Boeing 737 Systems > Flashcards

Boeing 737 Systems Flashcards

1
Q

What is the max takeoff weight for the 737?

A

174,200 lbs.

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2
Q

Is it possible to always take off at the max weight?

A

No, it depends on multiple factors.

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3
Q

What are some factors that affect takeoff performance? (RAFTCAME)

A
  • R – Runway length and slope
  • A – Airport elevation
  • F – Flap setting
  • T – Temperature
  • C – Contaminated Runway
  • A – Air conditioning packs off
  • M – MEL/CDL items
  • E – Engine anti-ice on
  • (Wind)
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4
Q

What is a runway analysis?

A

A document used to determine the maximum takeoff weight for a flight.

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5
Q

What is the standard flap setting for takeoff in the 737?

A

15 degrees.

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6
Q

What other flap settings are available on the 737?

A
  • A degrees
  • 25 degrees.
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7
Q

What effect does snow, ice, or slush on a runway have on takeoff performance?

A

Decreases performance and increases takeoff distance.

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8
Q

Are the AC packs normally on for takeoff?

A

Yes, but they can be turned off to achieve a higher max takeoff weight.

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9
Q

If the air temperature increases, how does it affect takeoff?

A

Performance worsens and there is a penalty to the max takeoff weight.

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10
Q

What is Center of Gravity?

A

The point at which all of the weight of an object is considered to be concentrated.

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11
Q

What is MAC?

A

Mean Aerodynamic Chord, an imaginary chord from the nose to tail of the aircraft.

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12
Q

Where can you find the CG of a 737?

A

Between the wings within the CG envelope.

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13
Q

What is STAB Trim?

A

Adjusts the stabilizer for the best nose up setting for takeoff.

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14
Q

Why do we need to calculate CG?

A

To ensure the aircraft is balanced for takeoff.

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15
Q

How many emergency exits are on the 737?

A

10 total.

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16
Q

How many crash axes are on the 737?

A

1 – in the cockpit.

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17
Q

How many passengers can the 737 normally carry?

A

189 economy seats.

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18
Q

How many cargo areas are there on the 737?

A

4 – 2 forward and 2 aft.

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19
Q

How many oxygen systems are on the 737?

A

2 – one cockpit system and one passenger system.

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20
Q

What are the primary flight controls on a 737?

A
  • Elevators
  • Ailerons
  • Rudder.
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21
Q

What do elevators control?

A

Pitch.

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22
Q

What do the ailerons control?

A

Roll.

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23
Q

What do the rudders control?

A

Yaw.

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24
Q

What are the secondary flight controls on the 737?

A
  • Flaps
  • Leading Edge Devices (LEDs)
  • Spoilers.
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25
Q

What do flaps and LEDs do?

A

Create lift during takeoff or landing.

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26
Q

Are spoilers used during takeoff?

A

No, they destroy lift.

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27
Q

What do spoilers do in flight?

A

Destroy lift, enabling descent.

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28
Q

What are the functions of yaw dampers?

A

Prevent ‘dutch roll’ while in flight.

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29
Q

What is the Maximum Mach # of the 737?

A

.82 Mach.

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30
Q

What is the Maximum Operating Altitude of the 737?

A

41,000 ft.

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31
Q

What is the max tail wind component for takeoff and landing?

A

10 kts.

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32
Q

What is the max field elevation for takeoff and landing?

A

8,400 ft.

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33
Q

What are the minimum and maximum temperatures the 737 can operate in?

A
  • Min temp: -54C
  • Max temp: 54C.
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34
Q

What is the max crosswind component for the 737?

A
  • With winglets: 33 kts
  • Without winglets: 36 kts.
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35
Q

What is an APU?

A

Auxiliary Power Unit.

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36
Q

Can the APU be used during flight?

A

Yes.

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37
Q

What is the runway slope limitation for the 737?

A

+/- 2%.

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38
Q

What is the Basic Operating Weight for the 737?

A

96,100 lbs.

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39
Q

What is the max Zero Fuel Weight of the 737?

A

136,000 lbs.

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40
Q

What is the max Landing Weight of the 737?

A

144,000 lbs.

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41
Q

What is the max Taxi Weight of the 737?

A

174,700 lbs.

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42
Q

How many hydraulic systems are there on the 737?

A

3 total: A, B, and Standby.

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43
Q

Which engines have hydraulic pumps?

A

Engines 1 and 2.

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44
Q

How many and what type of pumps does the A hydraulic system use?

A

2 pumps: 1 engine and 1 electrical.

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45
Q

How many and what type of pumps does the B hydraulic system use?

A

2 pumps: 1 engine and 1 electrical.

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46
Q

How many and what type of pumps does the Standby hydraulic system use?

A

1 electric pump.

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47
Q

What equipment is on the A hydraulic system?

A
  • Ailerons
  • Landing Gear
  • Elevators
  • Alternate (Manual) Brakes
  • Rudders
  • Nose Wheel Steering
  • Inboard Flight Spoilers
  • Number 1 Thrust Reverser
  • Ground Spoilers.
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48
Q

What equipment is on the B hydraulic system?

A
  • Yaw Dampers
  • Elevators
  • Ailerons
  • Rudder
  • Outboard Spoilers
  • Flaps
  • Brakes
  • Autoslats
  • LEDs
  • Landing Gear (retract only)
  • Alternate Nose Wheel Steering
  • Number 2 Thrust Reverser.
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49
Q

What equipment is on the Standby hydraulic system?

A
  • Rudders
  • LEDs
  • Standby Yaw Damper
  • Number 1 and 2 Thrust Reverser.
50
Q

Is there a backup to nose-wheel steering?

A

Yes, the main is on system A and an alternate is on system B.

51
Q

If the A hydraulic system is lost, how can the landing gear be lowered?

A

Crank until the locking mechanism releases.

52
Q

If the A hydraulic system is lost, how can the landing gear be raised?

A

The B hydraulic system can retract the landing gear.

53
Q

If both the A and B hydraulic systems are lost, is there a backup for the Ailerons and Rudders?

A

Yes, through manual reversion.

54
Q

Is there a backup for the Rudder if the A hydraulic system fails?

A

Yes, the rudders can be operated by all three systems.

55
Q

Which system supplies hydraulic power to the brakes?

A

The B system.

56
Q

What is the normal operating pressure for the hydraulic systems?

A

3,000 psi.

57
Q

What is the most common cause of a hydraulic system failure?

A

A leak in the reservoir or a ruptured hydraulic line.

58
Q

How many electrical generators are there on the 737?

59
Q

How many power sources may be available to an aircraft parked at its gate?

60
Q

What kind of battery does the 737 have?

A

24-volt nickel cadmium battery.

61
Q

What is an IDG?

A

Integrated Drive Generator.

62
Q

If both generators are lost in flight, how long will the battery work for?

A

60 minutes total.

63
Q

How many fuel tanks are on the 737?

64
Q

How much fuel does each tank hold?

A
  • Wing tanks: 9,100 lbs each
  • Center tank: 30,500 lbs.
65
Q

What is the maximum planned imbalance between the wing tanks?

A
  • None on the ground
  • 1,000 lbs. in flight.
66
Q

In what order are the tanks filled when fueling?

A

Wing tanks must be filled before the center tank.

67
Q

How many electrical fuel boost pumps are on the 737?

68
Q

Can the 737 dump fuel?

A

No, there is no fuel dump system.

69
Q

Can fuel be transferred from tank to tank while in flight?

A

No, but you can cross feed.

70
Q

How is the 737 pressurized?

A

Using AC Packs that mix outside air with hot bleed air.

71
Q

How many Air Conditioning Packs are on the 737?

A

2 – left and right.

72
Q

How many outflow valves are on the 737?

73
Q

Which outflow valve can be manually closed on the 737?

A

The main outflow valve.

74
Q

What is the maximum altitude the 737 may be dispatched to with both AC packs inop?

A

10,000 ft.

75
Q

Which engines provide bleed air to the AC packs?

A

Both main engines.

76
Q

What is the altitude at which the 737 can operate if both AC packs are inoperative?

A

14,000 ft

Check the AFM for confirmation.

77
Q

Can a flight be dispatched with 1 or both AC packs inoperative?

A

Yes, but always check the MEL!!

78
Q

Which engines provide bleed air to the AC packs on the 737?

A

Both main engines.

79
Q

Where are the AC packs located on the 737?

A

Located in the belly (underside) of the aircraft, just forward of the main landing gear.

80
Q

How many anti-ice systems does the 737 have?

A

2 – Bleed Air and Electrical.

81
Q

What equipment is electrically anti-iced on the 737?

A
  • Pitot Tubes
  • Temperature Probes
  • Alpha Vane
  • Engine Intake
  • Windows, Windshield, Doors
  • Water and Toilet Drain
82
Q

What is Hot Bleed Air?

A

Hot air that is siphoned off each engine.

83
Q

What equipment is pneumatically anti-iced on the 737?

A
  • Engine Cowlings
  • Inlet Guide Vanes
  • Wing Thermal Anti-Icing System
84
Q

Which engines provide hot bleed air to the wing anti-ice system on the 737?

A

Both Engines.

85
Q

Can the 737 be dispatched into known or forecasted icing conditions?

A

Yes, but only light or moderate.

86
Q

When do icing conditions exist according to Boeing?

A

When the temperature is 10C and below and there is visible moisture.

87
Q

Why are the antennas anti-iced?

A

To prevent ice build up and the possibility of the antennas breaking off and flying into the engines or fuselage during flight.

88
Q

Where is the wing anti-iced on the 737?

A

Around the leading edge (LEDs).

89
Q

What is a major function of windshield heat?

A

Protection from Bird Strikes.

90
Q

Does the 737 have de-icing capabilities?

91
Q

How can you de-ice an aircraft?

A

De-icing is done on the ground by spraying chemicals on the aircraft.

92
Q

How many engines are on the 737?

A

2 engines + 1 APU.

93
Q

How much thrust does each engine produce?

A

26,400 lbs of thrust.

94
Q

What model engines are on the 737?

A

General Electric – CFM56.

95
Q

What is an APU?

A

APU – Auxiliary Power Unit; provides Bleed Air for the AC packs, electrical power, and engine start.

96
Q

Which fuel tank normally fuels the APU on the 737?

A

Tank 1 (the Left Tank).

97
Q

Where is the APU located?

A

In the tail section of the aircraft.

98
Q

How can pilots monitor the amount of thrust produced by an engine?

A

Using the EPR (Engine Pressure Ratio) in the cockpit.

99
Q

How is the APU started?

A

Via electrical power from the battery or an outside electrical source.

100
Q

How do jet engines work?

A

Suck, Squeeze, Bang, Blow.

101
Q

What areas on the 737 are equipped with fire detectors?

A
  • Engines
  • Lavatories
  • Landing Gear Wheel-Wells
  • APU
  • Cargo Areas
102
Q

What areas on the 737 have fire extinguishers?

A
  • Both engines
  • Cargo hold (shares 1 bottle)
  • APU
  • All 3 Lavatories
103
Q

If a fire were to develop in the wheel-well, how could it be extinguished?

A

By lowering the landing gear to allow airflow to blow the fire out.

104
Q

How many fire extinguisher bottles are there for the 2 engines?

A

2 total – one for each engine.

105
Q

Does the APU have its own fire extinguisher?

106
Q

How many hand-held fire extinguishers are in the passenger cabin?

107
Q

How many passenger exits does the 737 have?

108
Q

What is the function of the Tail Skid?

A

To protect the tail section of the aircraft during takeoff and landing.

109
Q

What is the function of the Anti Skid system?

A

To prevent or minimize skidding during landing by adjusting brake pressure.

110
Q

How many pitot-static systems are there on the 737?

111
Q

What are the 3 pitot-static instruments on the 737?

A
  • Airspeed Indicator
  • Vertical Speed Indicator (VSI)
  • Altimeter
112
Q

What are the 2 gyroscopic instruments on the 737?

A
  • Directional Gyro (DG)
  • Attitude Indicator
113
Q

What is a radar altimeter?

A

Provides the altitude of the aircraft above the ground (AGL).

114
Q

What is a CDI?

A

CDI – Course Deviation Indicator.

115
Q

What is a DG?

A

DG – Directional Gyro.

116
Q

What is the HSI?

A

HSI – Horizontal Situation Indicator.

117
Q

What is the RMI?

A

RMI – Radio Magnetic Indicator.

118
Q

What is the HDI?

A

HDI – Horizontal Deviation Indicator.

119
Q

What is an EFIS?

A

EFIS – Electronic Flight Instrument System.

120
Q

What is the purpose of weather radar?

A

To show areas of precipitation, clouds, storms, and other weather phenomena.

121
Q

What is the FMS?

A

FMS – Flight Management System.

ADX Practical (7 decks)

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