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B737 Type Rating (LVFA) > Oral GK > Flashcards

Oral GK Flashcards

1
Q

When do the Emergency EXIT LIGHTS automatically illuminate?

A

When DC Bus 1 fails or AC power is turned off

This ensures emergency lighting is available during power failures.

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2
Q

Which systems use engine bleed air during operation?

A
  • Engine starting
  • Air conditioning
  • Cabin pressurization
  • Engine and wing anti-icing
  • Hydraulic reservoir
  • Water

Engine bleed air is essential for various aircraft systems to function properly.

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3
Q

The APU is capable of supplying bleed air for how many packs on the ground?

A

Two packs

In flight, it can supply for one pack.

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4
Q

What is the primary function of the recirculation fans?

A

Reduce engine bleed air demand and load on the packs

This helps maintain efficiency in the aircraft’s environmental control system.

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5
Q

True or False: The packs produce the coolest temperature selected in any of the zones.

A

TRUE

Other zones are controlled by adding hot trim air to achieve required temperatures.

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6
Q

From which stages is bleed air taken in the compressor?

A

Stage 5 from the low pressure compressor and stage 9 of the high pressure compressor

This configuration is typical for efficient engine operation.

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7
Q

What is the result of one pack failing in flight?

A

The remaining pack maintains pressurization and acceptable cabin temperatures up to 41,000 ft

This ensures passenger comfort and safety at high altitudes.

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8
Q

What does the dual bleed light indicate?

A

Illuminates when engine is running and APU bleed air valve, engine bleed air valve, and isolation valve permit possible backpressure of the APU

This is crucial for monitoring bleed air system integrity.

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9
Q

What indication occurs if a cowl anti-ice valve fails to move to the selected position?

A

The cowl valve open light remains on bright blue

This alert is critical for ensuring anti-icing systems function properly.

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10
Q

What effect does positioning the ENG ANTI ICE switch to on have?

A

Stall warning logic adjusts stick shaker and minimum maneuver speed bars on airspeed indicator

This adjustment is vital for maintaining safe flight operations.

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11
Q

What occurs when the window heat Test Switch is put into the OVHT position?

A

Simulates an overheat condition to test the system

This helps ensure window heating systems are operational.

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12
Q

What is the result when the ALT NORM switch on the Audio Control Panel (ACP) is selected to ALT?

A

ACP operates in a degraded mode, VHF-1 for Captain and Observer, VHF-2 for First Officer

This ensures communication remains functional even in reduced capability.

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13
Q

If all AC generated power fails, how long can the batteries supply standby power?

A

A min of 60 minutes. 30 with one battery.

This indicates the backup power duration based on battery configuration.

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14
Q

What does the illuminated amber TR UNIT light indicate while in flight?

A

TR1 has failed, or TR2 and TR3 have failed.

This alerts the crew to a potential transformer rectifier issue.

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15
Q

What does an illuminated amber ELEC light on the AC and DC Metering Panel indicate?

A

A fault exists in the DC power system or the Standby power system.

Will only illuminate on the ground

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16
Q

What does it indicate if both the ON and ALTN lights in the EEC switch are illuminated?

A

The EEC has automatically switched to the soft alternated mode.

This is a safety feature for engine control.

17
Q

Which ENGINE START switch position provides ignition to both igniters regardless of igniter switch position when the engine start lever is IDLE?

A

FLT.

Ensures engine ignition under specific conditions
Such as turbulence or emergencies

18
Q

How many fire extinguisher bottles are in the cargo compartment?

A

1 fire extinguisher bottle, that can be selected to be discharged into either cargo hold.

Provides fire suppression in cargo areas.

19
Q

What is the effect of pulling up the Number 1 Eng Fire DISCH switch?

A
  • Arms the squib on each engine fire extinguisher
  • Closes fuel, Hydraulic, and engine bleed valves
  • Disables thrust reverser
  • Trips generator control relay and breaker
  • Deactivates engine driven HYD pump LOW PRESSURE light
  • Allows engine fire switch to rotate right or left

This is part of the emergency procedures for engine fire management.

20
Q

What does the yaw damper provide inputs to, and what is its effect on the rudder pedals?

A
  • Provides Gust Dampening
  • Dutch roll prevention
  • Turn coordination
  • The rudder pedals are not affected by yaw damper operation.

Enhances aircraft stability and handling.

21
Q

What is the maximum flap extension altitude?

A

20,000.

The maximum flap extension altitude on a Boeing 737 is 20,000 feet because at higher altitudes, the thinner air combined with the increased camber created by extended flaps can lead to excessive airflow disruption, potentially causing localized supersonic airflow (Mach effects) on the wing, which could result in instability and loss of control of the aircraft; essentially, the flaps become too efficient at high altitudes, creating undesirable aerodynamic conditions.

22
Q

What does the amber FLT CONTROL (LOW PRESSURE) light mean?

A

Related Hydraulic system pressure to ailerons, elevator and rudder is low.

Indicates a potential issue with hydraulic pressure affecting control surfaces.

23
Q

What is the purpose of the ALTERNATE FLAPS master switch, and why is the cover red?

A
  • Closes the trailing edge flap bypass valve (when flap asymmetry is detected, a bypass valve opens to stop hydraulic pressure)
  • Activates standby pump
  • Arms ALTERNATE FLAPS position switch
  • Its RED because the action of extending the leading edge devices cannot be reversed in flight.

The red cover signifies the critical nature of the switch and the irreversibility of the operation.

If the TE flaps do not stay in alignment, the FSEU operates the bypass valve. This stops the hydraulic operation of the TE flaps. In the mean time, the FSEU sends an input to the Flaps Position Indication control to set the pointers 15° apart.

24
Q

What operates the spar fuel shutoff valve?

A

DC motor from HOT BATTERY BUS

25
Q

What may occur during total generator failure at high altitude?

A

Thrust deterioration

26
Q

Why does thrust deterioration occur at high altitude during total generator failure?

A

Fuel will be suction fed, causing dissolved air to restrict fuel flow

27
Q

When does the center tank fuel scavenge jet pump operate?

A

When the Number 1 main fuel tank is about ½ full

28
Q

What components does Hydraulic System A power?

A
  • Landing gear
  • Normal nose wheel steering
  • Power transfer unit (PTU)
29
Q

Which pump(s) will have hydraulic fluid available if a leak develops in the hydraulic System A reservoir?

A

The AC electric motor driven pump because it gets hydraulic fluid from below the standpipe.

30
Q

What is the purpose of the landing gear transfer unit?

A

Automatically use hydraulic system B for gear retraction if No. 1 engine is lost

31
Q

Which conditions must exist for the landing gear transfer unit to operate when airborne?

A
  • No. 1 engine RPM drops below a limit value
  • Landing gear lever is positioned up
  • Either main landing gear is not up and locked
32
Q

What does the Power Transfer Unit (PTU) supply pressure to if system B Engine Driven Pump (EDP) pressure drops below limits?

A
  • Autoslat system
  • All leading edge devices
33
Q

What is true when the landing gear Manual Extension Access Door is open?

A
  • Normal landing gear extension is possible if Hydraulic system A is operational
  • The landing gear cannot be retracted
  • The landing gear can be manually lowered with the landing gear lever in any position
34
Q

What does it indicate if the landing gear lights on the main center panel are all green?

A

The gear is down and locked

One green light on either panel for each landing gear confirms this.

35
Q

True or False: You can ignore a situation where the aft overhead panel shows the LEFT GEAR is not locked and down if the main center panel indicates green.

A

TRUE

36
Q

Under what situations will the PSEU light illuminate?

A

Illuminates 30 seconds after the ground/air systems sense ground mode if:
* An emergency exit flight lock has failed locked
* A fault is detected

37
Q

Which systems does the Proximity Switch Electronic Unit (PSEU) monitor?

A

Takeoff/landing configuration warnings, Landing Gear, and Air/Ground sensing.

B737 Type Rating (LVFA) (6 decks)

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