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B 737 Oral Questions Flashcards

1
Q

After landing what would cause the illumination of either amber REVERSER light?

A

“There is a disagreement between the actual reverser and the position of the lever.”

This light only lights when you stow the reverser, not when you open the reverser. If the reverser is in the stowing position for more 12 or more seconds the light will illuminate.

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2
Q

What does the amber “ENGINE CONTROL” light meant?

A

“There is a fault with the engine control systems which warrants a NO GO item.”

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3
Q

What are the modes of failure of the EEC? What are the differences between them?

A

Soft and Hard Alternate mode

“A soft failure is when the engine fails to the ALTERNATE mode. Hard failure is when we manually put the EEC into the ALTERNATE mode.”

Soft failure locks the last sensed flight conditions are locked into the EEC so a thrust shortfall or exceedence could be possible.

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4
Q

How does the PASSENGER OXYGEN switch work in normal?

A

“The oxygen masks will automatically deploy at a cabin altitude reaches 14,000 feet. The PASSENGER OXYGEN light will also illuminate”

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5
Q

What does the amber PASSENGER OXYGEN light mean?

A

“It means that the PSU doors have opened and the masks are deployed”

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6
Q

What would cause the IRS ALIGN light to flash?

A

(NO) No Position Entry
(BAD) Bad Position Entry
(MOVE) A/C has been Moved

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7
Q

What does the amber “ON DC” Light mean?

A

“The respected IRS is operating on Battery Power. This light will come on normally when you switch the IRS to NAV. It will illuminate for 5 seconds as a self test using DC power from the battery bus”

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8
Q

When does the amber “FAULT” light illuminate?

A

“There is a fault or failure with the respected IRS”

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9
Q

When does the amber “DC FAIL” light illuminate?

A

“DC Power to the IRS has failed.”

This commonly illuminates if the Switched Hot Bat Bus is not powered or the battery is drained and close to dead

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10
Q

What does the amber “PSEU” light mean?

A

“There is a Proximity Switch Issue that warrants a NO GO condition.”

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11
Q

What makes the “LOW PRESSURE” light come on for flight control system A or B? How can we fix this problem?

A

“There is a Low Pressure Condition in the hydraulic system. You can fix this problem by turning the STBY RUDDER on”

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12
Q

What happens when you put the A system in the STBY Rudder position?

A

Standby Pump On
Opens SRSOV (Standby Rudder Shut off Valve)
Arms Low Pressure Light
Position Indicating Light

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13
Q

What happens when you put the B system in the STBY Rudder position?

A 
Standby Pump On
Opens SRSOV (Standby Rudder Shut off Valve)
Arms Low Pressure Light
Position Indicating Light
Yaw Damper
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14
Q

When do we use the Guarded Spoiler Switches?

A

“We do not use them, they are for MX only.”

If asked for detail, they are for spoiler rigging.

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15
Q

What happens when we put the ALTERNATE FLAP SWITCH to arm?

A
  1. Arms the Up/Down flap switch
  2. Activates the Standby Pump
  3. Closes the Trailing Edge Flap Bypass Valve
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16
Q

What is the main purpose of the ALTERNATE FLAP SYSTEM?

A

“To electrically operate the Trailing Edge Flaps if hydraulic system B is lost.”

  • Trailing Edge Devices are extended and retracted using an electric motor.
  • Leading Edge Devices are extended and retracted using Standby Hydraulic Pressure and may not be retracted
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17
Q

When does the amber “FEEL DIFF PRESS” light illuminate?

A

“Excessive differential pressure in the Elevator Feel Computer.”

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18
Q

When does the amber “SPEED TRIM FAIL” light illuminate?

A

“If you have a Dual Channel failure of the FCC Computer system. Upon dual channel failure you will get a MASTER CAUTION and the SPEED TRIM FAIL light. If only a single channel fails you will only get a recall annunciation.”

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19
Q

When does the amber “MACH TRIM FAIL” light illuminate?

A

“If you have a Dual Channel failure of the FCC Computer system. Upon dual channel failure you will get a MASTER CAUTION and the MACH TRIM FAIL light. If only a single channel fails you will only get a recall annunciation.”

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20
Q

What does an amber “AUTO SLATS FAIL” light mean?

A

“Dual channel failure of the SMYD (Stall Management Yaw Damper) Computer. If only one channel fails it would only show on the recall switch”

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21
Q

How can we control the ENG fuel valve and the Spar fuel valve?

A

The Engine Fire Switch and the Engine Start Levers

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22
Q

What does a Bright Blue ENG VALVE CLOSED light mean?

A

“There is a disagreement between the Start Lever and the Valve Position”

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23
Q

What powers the Crossfeed Valve?

A

DC Power from the Battery Bus

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24
Q

What powers the ENG fuel Valve?

A

DC Power from the Hot Battery Bus

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25
What does the FILTER BYPASS amber light mean?
"There is an impending Fuel Filter Bypass due to contamination"
26
When will you get an amber fuel "LOW PRESSURE" light?
"When the output fuel pressure is low."
27
When will the APU automatically shut down?
1. APU Fire 2. Fault (High Oil Temperature) 3. Overspeed 4. Low Oil Pressure 5. Battery Switch OFF
28
Does the MAINT light shut the APU off?
No, the APU will run with Low Oil Quantity. Limited to 10 hours of use in this condition.
29
When will you get an amber fuel "LOW PRESSURE" light?
"When the output fuel pressure is low."
30
How long do you have to wait to open the APU Bleed Valve?
60 Seconds
31
Does the MAINT light shut the APU off?
No, the APU will run with Low Oil Quantity. Limited to 10 hours of use in this condition.
32
What does the "GEN OFF BUS" light mean?
The Generator Breaker is Open
33
What does a blue "APU GEN OFF BUS" light mean?
APU is up to speed, available, and power quality is good
34
What does a blue "GND POWER AVAILABLE" light mean?
Power is connected and power quality is good (-400 does not check power quality)
35
When does the amber "SOURCE OFF" light illuminate?
"Normal Source of power for the transfer bus is not powering that transfer bus"
36
How does the BUS TRANSFER switch work the the AUTO position?
In the event of a generator failure, power will be transferred through the bus tie breaker
37
When does the amber "TRANSFER BUS OFF" light illuminate?
The respected Transfer Bus is not powered
38
What happens when we put the BUS TRANSFER switch in the OFF position?
We will lose the Bus Tie Breaker Relay, and lose the auto transfer of power in case of a failure
39
What happens when we put the IDG DISCONNECT Switch to Disconnect?
"We are disconnecting the IDG. We cannot reset this inflight" We can check that it has disconnected by checking the voltage and frequency
40
What does the amber DRIVE light mean?
"There is a fault with the IDG." High Oil Temperature Low Oil Pressure Engine Could be off IDG Could have Automatically or Manually Disconnected
41
How does the STANDBY POWER Switch work in the auto position?
"If we have a loss of both generators the battery will power the DC Standby Bus and the inverter will power the AC Standby Bus"
42
How does the STBY POWER Switch work in the BATT Position?
You are forcing the Battery to power the DC Standby bus and AC Standby Bus through the inverter.
43
What does an amber "STANDBY POWER OFF" light mean?
"There is a fault with the Standby System, so the AC Standby Bus, DC Standby Bus, or the Battery Bus is not powered."
44
How many batteries do we have installed? What voltage is the system?
2 24 volt Batteries
45
What is the voltage of the Transformer Rectifier Unit?
TRU Output voltage is 28 Volts
46
What is the minimum voltage for APU Start?
23 Volts
47
When would we get an amber BAT DISCHARGE light?
"There is an excessive discharge of the battery. It can be a normal condition if you are starting the APU off of the battery."
48
What does a TR UNIT amber light indicate?
"On the ground it means that there is a Fault with TR 1 2 or 3. Inflight it means that TR 1 or TR 2 and 3 have failed."
49
What does an amber ELEC light mean?
"There is a problem with the DC System or STANDBY System"
50
What does the MAINT switch do?
It is for maintenance only, it is used to check residual voltage with the IDG or CSD
51
What does the amber OFF light of the equipment cooling system mean?
"There is not enough airflow in the avionics compartment"
52
How many fans do we have in the equipment cooling system?
4 Fans. Two Normal, Two Alternate. They are Supply and Exhaust fans
53
When would the Emergency Exit Lights come on automatically?
"The loss of DC Bus 1"
54
What is the difference between Windshield Wiper OFF and PARK?
In Park the Wipers will be stowed and out of view
55
What could cause the Window Heat Overheat lights to illuminate?
"The Window Heat has Overheated"
56
Is it normal to get two Window Heat "OFF" illuminated instead of all four?
Yes, it works like a thermostat so they might be at temperature and therefore not calling for heat.
57
When you put the Pitot switch to the ON Position on the ground are all sensors heated?
NO, the TAT sensor is only heated in the air
58
What do the amber probe heat lights mean?
It means the associated probe is not receiving heat
59
What does an amber "COWL ANTI ICE" mean?
- 800 A duct overpressure has occurred | - 400 A duct overpressure or overtemperature has occurred
60
What color light intensity for the Wing Anti Ice lights during taxi/takeoff with the WAI switch on?
Upon application of T/O thurst the Wing Anti Ice Valve will close causing a disagreement light with the switch therefore a BRIGHT Illumination. Upon takeoff WAI switch will automatically switch to OFF when weight on wheels switch senses lift off.
61
What does an illumination of an amber Hydraulic "OVERHEAT" light mean?
"Overheat condition in the pump housing or the case drain. This could be due to low fuel quantity, low hydraulic fluid quantity."
62
What does a Hydraulic "LOW PRESSURE" light mean?
"The output of the pump pressure is low"
63
What is the normal hydraulic operating psi?
3000 psi
64
How many hydraulic pumps are installed?
5 pumps. 2 Engine Driven, 2 Electric, 1 Standby
65
How is the STBY HYDRAULIC PUMP activated?
1. FLT CONTROL A switch to STBY RUDDER 2. FLT CONTROL B switch to STBY RUDDER 3. ARM ALTERNATE FLAPS 4. Auto Operation
66
When does the PTU (Power Transfer Unit) operate?
"Low output pressure from hydraulic system B engine driven pump"
67
What is the PTU used for?
"Retraction of Leading edge devices and Autoslats"
68
What Cabin Altitude will the "ALT WARNING HORN" sound?
10,000 feet Cabin Altitude
69
What does illumination of the pressurization of the "AUTO FAIL" light mean?
Outflow Valve Control Fault Controller not responding properly Loss of DC Power Excessive Differential Pressure (<8.75 psi) Excessive rate of cabin pressure change (+/- 2000 sea level ft/min) Controller Fault High Cabin Altitude (above 15,800 feet)
70
When does an amber "OFF SCHED DESCENT" light illuminate?
"A descent is began prior to reaching 1000 feet of the scheduled cruise altitude"
71
What does the green "ALTN" mean?
"The pressurization controller is operating in the Alternate mode" Will trip to this position during and AUTO FAIL
72
What does an amber "BLEED TRIP OFF" light mean?
Bleed air overtemp or overpressure has occurred
73
Can we reset a "BLEED TRIP OFF" light?
Yes with the TRIP RESET switch
74
What lights do the TRIP RESET switch reset?
1. BLEED TRIP OFF 2. PACK TRIP OFF 3. ZONE TEMP
75
What does an amber "WING BODY OVERHEAT" light mean? What does each system monitor?
There is a Bleed Air Leak Left system monitors the 1. Air Conditioning Bay 2. Leading Edge Wing inboard of the engine 3. Engine Pylon 4. Keel Beam 5. APU Duct Right System Monitors 1. Air Conditioning Bay 2. Leading Edge Wing inboard of the engine 3. Engine Pylon
76
Can you reset the WING BODY OVERHEAT light?
No
77
When does the amber "PACK TRIP OFF" light illuminate?
A Pack Overheat has occurred and the Pack valve has closed
78
How does the ISOLATION VALVE work in the AUTO position?
It is normally in the closed position. It will open when any of the four corner switches is in the OFF position. (Any pack or bleed switch).
79
What does the DUAL BLEED light mean?
There is a risk of back pressure to the APU Duct. The light monitors the position of the engine bleed switches, the isolation valve, and the APU valve. (Remember the Triangle....Isolation valve, and the bottom row of switches)
80
When does the blue "RAM DOOR FULL OPEN" light illuminate?
On the ground (due to the air ground sensor in the main gear and nose gear). Inflight when the flaps are extended
81
When does the amber "ZONE TEMP" light illuminate?
When there is an overheat of a specific zone, the respected TRIM AIR valve will close. Can be reset with the TRIP RESET switch -400 these are called "DUCT OVERHEAT" lights
82
What happens in the ENG START GRD position?
It opens the Start Valve
83
What is the difference between GRD and CONT?
The GRD position the Start Valve is opened, in CONT the Start Valve is bypassed.
84
What is the difference between the CONT valve and the FLT position?
"In CONT you will have CONT ignition depending on which ignitor you select. In FLT you will get BOTH ignitors reguardless of the switch position"
85
What is the power source for the Right Ignitor?
The AC Standby Bus
86
What is the power source for the Left Ignitor?
The Respective Transfer Bus
87
If you lose both generators in flight which Ignitor will be availible?
The Right Ignitor because of the AC Standby Bus
88
What are the items on the throttle quadrant that would give you a Takeoff CONFIG warning horn?
1. Speed Break not in the down position 2. Stabilizer Trim not in the green band 3. Parking Break ON 4. Flaps not set in the Takeoff Position
89
If a Fire Test is done without AC Power would we get a WHEEL WELL light illumination?
No because the WHEEL WELL light is powered by AC Transfer Bus Number 1
90
What is the difference between testing fire bottle squibs 1 and 2 with the switch vs pressing the bulb?
"The switch will check the circuitry for the Squib system, vs pressing the bulb will just check the if the bulb will light"
91
What happen when the ENGINE FIRE SWITCH is pulled?
1. Silence the Bell 2. Arm Squibs 3. Fuel/Spar Shutoff Closes 4. Electric Generator Trips Off 5. Hydraulic Shutoff Valve Closes 6. Inhibits Hydraulic Low Pressure Light 7. Disables Thrust Reverser 8. Engine Bleed Valve Closes
92
How does the Cargo Suppression System work?
The first bottle will discharge immediately upon pressing the discharge switch. The second bottle will discharge 60 minutes later into the selected compartment. If you land prior to the 60 minutes the weight on wheels switch closing will inhibit discharge of the second bottle.
93
What does the STAB TRIM OVERRIDE switch in the override position do?
"It overrides the Control Column Cutout Switches. This will allow you to trim in an opposite direction of the control column."
94
What does the STAB OUT OF TRIM light mean?
"The autopilot is not trimming properly. Autopilot must be connected for this light to illuminate"
95
What does the SPEEDBRAKE DO NOT ARM light mean?
"There is a problem with the Speed Break System, do not arm in flight"
96
If you have an amber SPEEDBRAKE DO NOT ARM light can you use the Speedbrake on the ground after landing?
Yes you can use it manually on the ground
97
What condition is needed to arm the RTO system?
1. Airplane must be on the ground 2. Throttle must be at Idle 3. Airspeed below 60 Knots 4. Antiski must be operational 5. RTO must be selected
98
What makes the SPEEDBRAKE EXTENDED light comes on?
"Speedbrake is beyond the arm detent with either the flaps beyond 10 degrees or below 800 feet RA."
99
How many Pitot tubes are on the airplane?
5 (3 in the front, 2 in the back on the elevator)
100
How many Alpha Vanes?
2
101
How many TAT probes?
1
102
How many Static Ports are there? Are they heated?
6, No

B-737 Oral (8 decks)

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