Technical Flashcards
To improve your Technical and Systems Knowledge
(RF) Indication is displayed to the right of hydraulic system quantity:
When hydraulic quantity is below 76% in either system A or B // and the aircraft is on the ground with both engines shutdown or after landing with flaps up during taxi-in.
A DUCT OVERHEAT light only will cause:
The temperature mix valves to drive full cold
A fast realignment should be complete in:
30 seconds
A flight is aborted shortly after takeoff and prepares to return to the departure airfield. The OFF SCHED DESCENT light illuminates. On the pressurization panel crew must:
take no action - the auto abort capability programs cabin to land at takeoff field elevation.
A Fuel CONFIG alert is when?
- Centre tank > 726kg and Centre pumps OFF or LO PRESS
- Goes away when Centre tank quantity less than 363kg
A hot air leak is detected in the APU bleed air ducting. This is indicated on the forward overhead panel by:
left (1) WING-BODY OVERHEAT light
A leak in standby hydraulic system will cause system B fluid indication decrease, to approximately:
0.72
A leak in the No 2 engine driven hydraulic pump or associated lines can result in a total loss of hydraulic system B pressure:
Yes, but it drains to top of standpipe (both pumps feed from standpipe. Volume still remains but only PTU operation is still available’
A Mach trim system provides speed stability at airspeeds above:
Mach .615
A magenta bug on the vertical speed indicator on the PFD indicates:
Selected vertical speed on the MCP panel with V/S pitch mode selected
A TA symbol showing on the ND has, alongside it, a down arrow
and „-07v”. This means:
♦
The traffic is descending at minimum of 500fpm
A TCAS Resolution Advisory is generated when:
The conflicting aircraft is 25 seconds from point of closest approach
A valid FMC PERF INIT page Scratch Pad entry for actual FUEL is:
Actual fuel is displayed automatically and cannot be entered manually
A WING BODY OVERHEAT light indicates:
A leak in the bleed air system
Above 37,000 feet the pressurization controller maintains a pressure differential of:
8.35 psid
Activated at 14,000 feet the passenger oxygen masks drop down from the stowage. How do you activate the flow of oxygen?
Pulling one mask down will activate all masks in that unit.
After a normal take-off, what pitch command can you expect from the F/D?
15*, then
- if 2 - V2
- otherwise V2+20
After liftoff, the flight director commands pitch to maintain an airspeed of V2 + 20 knots until another pitch mode is engaged. V2 + 20 knots is the optimum climb speed with takeoff flaps. It results in the maximum altitude gain in the shortest distance from takeoff. Acceleration to higher speeds reduces the altitude gain
After completing the FMC CDU pre-flight actions, you look at the POS INIT page again. The SET IRS POS lines is missing. What is required?
Nothing, this is a normal indication once both IRSs have entered the NAV mode
After lift-off the A/T remains in THR HOLD until:
800 feet RA.
After normal engine start, what should be done if the DUAL BLEED light is illuminated:
Place the APU bleed switch to OFF
After performing the FMC/CDU preflight, the flight crew notices that the ACTIVE NAV DATA base is expired and must be changed. What will the RTE page look like after the NAV DATA base change?
Blank, requiring reloading
After the loss of all generators, full charged batteries can provide standby power for a minimum of:
60 minutes
Aircraft in flight. You have 2500 kg of fuel in No 1 main tank and 3060 kg of fuel in the No 2 main tank. You will see:
An amber IMBAL indication below main tank No 1, fuel quantity arc and digits on tank also turn amber.
All window heat is selected ON. The green window heat ON light for Right Side Window extinguishes. The likely reason is:
System is at correct temperature
When do you get an Amber Fuel IMBAL alert ?
- Fuel Quantity btw Main 1 and 2 > 453kg
- Goes away when IMBAL <91kg
When do you get an Amber Fuel LOW alert ?
- Fuel Quantity in Main tank < 453kg
- Goes away when > 567kg
An amber ALT DISAGREE in the bottom of the altimeter tape is an indication of:
The Captains and First Officers altitude indications differ more than 200 feet for more than 5 seconds.
An amber AoA DISAGREE in the bottom of the altimeter tape is an indication of:
The Captains and First Officers AoA differ more than 10* for more than 10 seconds.
An amber CDS FAULT in the left lower corner of PFD indicates:
A non-dispatchable fault has occurred on the ground before starting second engine.
An amber DSPLY SOURCE annunciation below each speed tape indicates:
A single DEU has been manually or automatically selected to drive all six display units.
An amber IAS DISAGREE alert in the bottom of the speed tape indicates:
The captains and first officer’s airspeeds disagree by more than 5 KTS for more than 5 seconds.
An Amber PACK light illumination during Master Caution recall, that extinguishes when master caution is reset, indicates:
Failure of either primary or standby pack controller.
An amber ROLL displayed in the lower portion of the attitude indicator on the PFD means:
The Captains and First Officers roll angle display differ by more than 5 degrees.
An auto relight protection is provided by EEC activating both igniters when a flameout is detected and there is a rapid uncommanded decrease in:
N2, or N2 below idle.
An engine-driven hydraulic pump supplies approximately ___ times the fluid volume of an electric motor-driven hydraulic pump?
6 times
An illuminated BLEED TRIP OFF light indicates:
Too high temperature or pressure in bleed air duct and bleed air valve has closed
AN OFFSCALE annunciation appears on the ND. To view the TA or RA an appropiate action would be:
Increase ND display range on the EFIS Control Panel.
An overheat condition in the cooling cycle:
Causes the pack valve to close and the PACK light to illuminate
Antenna switching from tail antenna to nose antenna occurs when:
LOC frequency is selected and VOR/LOC is armed or engaged.
APU cooling air:
Enters through a cooling air inlet above the APU exhaust outlet
As you push the TO/GA switch for an automatic go-around, what is the correct FMA annunciation?
(Thrust Mode : Roll Mode : Pitch Mode)
GA : : TO/GA
At 100ft above DH/MDA the GPWS callout is:
“PLUS HUNDRED”
At what altitude will both A/Ps automatically disengage if FLARE is not armed during an ILS dual channel approach:
350 feet RA
At what cabin altitude is the passenger oxygen system automatically activated?
14,000 feet
Autopilot trim and main stabiliser trim use:
Single electric trim motor
Both, ON and ALTN visible on EEC switch, indicate EEC has automatically changed to soft alternate mode, and remains in soft mode until:
Thrust lever retarded to idle or Manually selecting ALTN with EEC switch on AFT overhead panel.
Can be reset with the TRIP RESET Switch?
BLEED TRIP OFF
Cargo compartment smoke detection is powered from:
- DC bus 1 (Left side, loop A) and
- DC bus 2 (Right side, loop B)
Center fuel tank fuel is used before main tank fuel because:
Centre tank fuel pumps produce higher pressure than main tank pumps
Cruise mode is activated when the aircraft climbs to:
Within 0.25psi of selected FLT ALT
Cruising at FL370. The motorised Overboard Exhaust valve will open in flight if:
Either pack switches are in HIGH and recirculation fan is OFF.
Do not attempt to make a turn away from an obstacle on the ground within:
7.4 M of the nose
Dotted red areas on terrain display indicate:
Terrain more than 2,000 Ft. above airplane altitude.
Dual angle-airflow sensors (alpha vanes) provide angle-of-attack information to the stall warning system, autothrottle, autopilot and autoslats are anti-iced:
By switching ON the PROBE HEAT switches
Due to a malfunction you are required to return to the airport of departure. To avoid the OFF SCHED DESCENT warning you reset the FLT ALT. What can you expect?
The automatic abort capability for the departure airport is lost.
During a dual channel A/P ILS approach, at which altitude (AGL) should the FLARE mode engage?
50 feet
During a normal engine start:
Only N1, N2, oil quantity and engine vibration are available prior to placing the engine start switch to GRD
During alternate brake operation, the following protection is provided:
Skid, locked wheel, touchdown and hydroplane.
During an autopilot ILS approach:
At glideslope capture DC Bus 1 and DC Bus 2 are isolated from each other
During an ILS approach the Captain observes his BARO minimum reference/ altitude turns from green to flashing amber for three seconds, this means:
The aircraft has descended below the Captain’s selected minimum altitude (DA)
During an impending hot start the flashing white box surrounding EGT digital read out, resets:
When the start lever is moved to CUT OFF or Engine reaches idle N2.
During AUTO LAND at which radio altitude should the FLARE mode be engaged?
50 feet.
During battery start, when does the EEC start to operate?
15% N2
During cruise you note both centre tank fuel pumps have failed as indicated by the illumination of both center tank fuel pump LOW PRESSURE lights. There is still 460 kg (// 320 kg) in the centre tank, and both main tanks are full. The upper display unit will show:
There will be no indication on CDS
During cruise the FMC Alerting Message ‘VERIFY POSITION’ indicates:
Position information is contradictory
During descent from altitude you need to decrease your airspeed by using your speed brakes. What is the limit of the SPEED BRAKE LEVER position?
FLIGHT DETENT
During descent, the pressurization descent mode is activated when:
Activated when the airplane descends 0.25 psi below the selected FLT ALT
During descent, with engines at a low thrust setting:
High pressure bleed air from the 5th stage is adequate and the high stage valve remains closed // the high stage valve modulates open to maintain adequate bleed air pressure from the 9th stage.
During engine start the maximum time allowance for EGT indication after start lever is moved to idle is:
15 seconds
During engine start, the EGT exceeds the starting limit, when does the EEC automatically turn off ignition and shuts off fuel to the engine?
On the ground only
During flight with hydraulic system B inoperative (no fluid in system B):
The standby hydraulic system operates the leading edge slats and leading edge flaps to fully extended position only
During normal operation with the OVHT DET Switch in NORMAL, an alert is initiated if:
Both loop A and B is sensing a FIRE or OVHT
During normal operations, hydraulic quantity indications vary when:
Raising or lowering the landing gear or leading edge devices
During preflight procedure the trim air switch is left in the OFF position and only one pack is selected ON for airconditioning. What is the correct consequence?
With the TRIM AIR selected OFF, the pack attempts to produce an air temperature to satisfy the average temperature demands of all three zones.
During PRELIMINARY COCKPIT PREPARATION the IRS mode selector is moved from OFF to ATT instead of OFF to NAV. How can normal IRS operation be regained?
Switch to OFF, wait for Align light to extinguish then initiate a full aligment (turn to NAV).
During primary charge cycle operation, battery voltage can be as high as:
30 Volts
During taxiing out for takeoff, the amber AUTO BRAKE DISARM Light illuminates, what should you do?
Position the AUTO BRAKE select switch to OFF. Do not attempt takeoff if light remains illuminated
During the ILS approach on the radio altimeter remaining perimeter and pointer turns amber and flashes for 3 seconds. This means:
The airplane has descended below the selected radio altitude
During the PRELIMINARY COCKPIT PREPARATION, the IRS Mode Selectors are normally positioned to:
NAV
During V NAV PATH DESCENT and below the speed restriction altitude, the FMC alerting Message OVERSPEED DISCONNECT means:
VNAV has disengaged because airspeed has exceeded FMC speed restriction by more than 15 knots
During VNAV operations the Fuel Quantity Indicating System fails:
The pilots enter and periodically update manually calculated fuel weight on the FMC PERF INIT page in order to keep gross weight and performance data accurate // Position information is contradictory
Electrical power to start the APU comes from:
The No 1 transfer bus if available if AC power is not available, battery power is used.
Elevator feel system is provided by the elevator feel computer. This computer receives inputs of:
Airspeed and stabiliser position
Emergency exit light can be activated from:
Flight deck and aft cabin attendant station
Engine bleed air is obtained from:
5th and 9th stage of the compressor section
Engine Fuel Flow is measured:
After passing through the engine fuel shutoff valve
Engine oil pressure is in the yellow band at take-off thrust. Which of the following is true?
Do not take-off
Engine starter cut-out speed is:
Approximately 56% N2
Equipment cooling system comprises
4 fans
Equipment requirement for RAs to be generated is if the other airplane has a working
TXPDR with MODE C and ALT ON
Extending the airstairs using the exterior system:
Bypasses the door open requirement
Extending the airstairs using the STANDBY system:
Bypasses the handrail and lower ladder safety circuits
Fire extinguishers provide a means of extinguishing:
Only engine fire, cargo, APU fire and lavatory fires
Following an unpressurised takeoff, when is the first engine Bleed Switch positioned to ON?
At not less than 400 feet, and prior to 2000 feet above field elevation
For ground service, a ground service switch is placed:
On forward attendants panel
For landing, what is the maximum fuel imbalance between No.1 and No.2 main tanks?
453 Kgs.
For RVSM operation, the maximum allowable altitude display difference for sea level, between the Captain and F/Os on the ground is?
50 feet
From where does the Cabin Auto Controller get its inputs?
From the ADIRUs.
Fuel for the APU is normally supplied from the:
Left side of the fuel manifold. (‘No 1 main tank’)
Galley busses are powered from:
The AC transfer busses
How are the Engine Bleed Air valves powered?
They are DC activated and pneumatically operated
How can you silence the Mach/airspeed warning in flight?
Slow the aircraft speed to below Vmo/Mmo
How many fire extinguishing bottles are there totally for engine and APU fires?
3
How many fuel measuring sticks are installed?
16 (6 in each wing and 4 in the centre tank)
How many independent Flight Control Computers (FCCs) are there in the Autopilot Director System (AFDS)?
2
Hydraulic pressure from System B will be used to retract the landing gear:
After failure of the No 1 engine with the landing gear still down and the landing gear lever is positioned up
If ‘ON DC’ on left IRS Mode Selector Unit comes ON steady it means:
The related IRS is operating on DC power from the switched hot battery bus
If a cowl anti-ice valve fails to move to the selected position:
The COWL VALVE OPEN light remains illuminated bright blue
If a crossbleed start is required during in flight starting, the X-BLEED START indication will be displayed:
Above the N2 dial
If a landing is made with RTO selected:
AUTO BRAKE DISARM light illuminates 2 seconds after touchdown
If a wet start is detected, the EEC will automatically turn off ignition and shut off fuel to the engine:
15 seconds after the start lever is moved to idle during ground starts
If all TEMPERATURE ZONE SELECTORS are positioned to OFF:
Left Pack maintains a fix temperature of 24C (75F) and Right PACK will maintain 18C (65F)
If an engine fails in flight:
The ENGINE OUT CRUISE page is information only and the execution light will not illuminate.
If an outboard display unit fails, the PFD is automatically displayed:
On the inboard display unit
If during RECALL on TAXI CHECKLIST, you push and release the system annunciator, the IRS light comes ON. The GPS light is illuminated on the AFT OVERHEAD PANEL, and extinguishes when Master Caution is reset. (not A/C YE003):
A single GPS sensor unit has failed
If GROSS WT is not available from the FMC, the APPROACH REF page will be:
Box prompts
If one cargo fire detector loop loses power
The system automatically converts to a single loop detection system
If one of the two fire detection loops A or B fails, how will you notice this?
It will be noticed when performing the OVHT/FIRE test
If the airplane pitch attitude reaches the pitch limit indicator:
Stick shaker activates for existing flight condition.
If the APU GEN OFF BUS light fails to illuminate by the end of the start cycle:
The FAULT light illuminates
If the APU is the only source of electrical power:
In flight, the galley busses are automatically shed
If the autopilot ALT HOLD mode is manually overridden with control column pressure, which of the following occurs?
The autopilot changes to CWS P and returns to ALT HLD if control pressure released within 250 feet of selected altitude.
If the FAULT Light on the IRS Mode Selector Unit illuminates, it indicates:
A system fault affecting the respective IRS ATT and/or NAV mode has been detected
If the nose gear steering lockout pin is not installed for pushback or towing:
System A HYDRAULIC PUMPS must be switched off.
If the required signals are not available, the EEC will automatically change to:
Soft alternate mode.
If the spoilers become jammed:
The captain’s control wheel operates the ailerons
If the thrust lever(s) are advanced after touchdown:
After 3 seconds in the advanced position, the AUTO BRAKE DISARM Light will illuminate
If wheel spinup is not detected on landing with the speed brake ARMED the flight spoilers will deploy automatically:
When the air/ground systems senses the ground mode (any strut compresses)
Illumination of amber AUTO SLAT FAIL light that can be reset, during recall indicates:
Failure of a single stall management yaw damper (SMYD) computer.
Illumination of amber FAULT light with the overheat detector switch in NORMAL indicates:
Both detector loops for an engine have failed.
Illumination of an amber COWL ANTI ICE light indicates:
An over pressure condition.
Illumination of ELEC amber light in flight indicates:
None of the above, this light is inhibited in flight.
Illumination of the ‘APU DET INOP’ Light will cause following lights to illuminate:
Both ‘MASTER CAUTION’ and ‘OVHT/DET’
Illumination of the ‘GEN OFF BUS’ light indicates:
The IDG is not supplying power to it’s associated transfer bus
Illumination of the ‘GND POWER AVAILABLE’ light indicates:
Ground power is connected and meets aircraft power quality standards
Illumination of the amber BLEED TRIP OFF light indicates what valve has automatically closed?
Engine Bleed Air valve
Illumination of the BAT DISCHARGE light indicates:
Excessive battery discharge is detected with the battery switch ON.
Illumination of the DUAL BLEED light indicates:
Possible back pressure of the APU due positions of APU and engine bleed air valve and isolation valve.
Illumination of the PSEU fault light on the aft overhead panel will indicate:
An overwing exit flight lock fails to disengage on the ground
Illumination of the STANDBY POWER OFF lights indicates
AC standby bus unpowered
Impact fittings located in the opening of each main gear well:
Are intended to provide protection to wheel well components during gear retraction by preventing a gear with a spinning tire and loose tread from entering the wheel well.
In addition to Hydraulic System A and B, the rudder can also be powered by the Standby Hydraulic System through the…
Standby Rudder PCU
In case of an engine overheat:
Both master caution lights, the related ENGINE OVERHEAT light and the OVHT/DET system annunciator lights illuminate.
In case of cargo compartment fire
Select the FWD ARMED of AFT ARMED switch then press the DISCH button
In degraded mode, what are the combinations for transmission and reception at the degraded station?
All stations will use VHF 1. // Capt. VHF 1, F.O VHF 2, Observer VHF 1.
In flight if APU is the only source of electrical power:
All galley busses are automatically shed
//
First Galley bus 2 and main bus 2 are shed, then galley and main bus 1. If still overload; IFE busses are shed.
In flight the Predictive Windshear Warning Alert system:
Will activate for windshear up to 1.5NM ahead of the aircraft
Automatically below 1200 feet RA
In flight with both PACK switches in HIGH:
None of RECIRC fans will operate.
In flight, operating the Fire Warning BELL CUTOUT Switch extinguishes both Master Fire Warn lights, silence the fire waring bell, and …
Resets the system for additional warnings
In MANUAL pressurization mode the outflow valve is driven by?
A motor supplied from DC standby bus
In the event of an elevator jam, an override mechanism allows:
The control columns to be physically separated.
In the PACK TRIP OFF or PACK FAIL non-normal procedure, the crew selects a warmer temperature in order to:
Reduce the workload on the affected air conditioning pack
In the remote situation of total generator failure, at high altitude thrust deterioration may occur. Why?
The fuel will be suction feed only, and at high altitudes fuel vapour might release and obstruct the suction feed line
In what mode will the TCAS automatically show if a TA/RA occurs and the TFC switches are selected OFF?
In MAP, centre MAP, VOR or APP modes
In which fuel tanks are bypass valves located?
Both main tanks
In-flight, two fuel pump LOW PRESSURE Lights for the No 1 tank illuminate. What happens to the No 1 engine?
It receives fuel from the No 1 tank through the fuel tank bypass valve
Landing autobrake settings may be selected after touchdown:
Prior to decelerating through 30 knots groundspeed
LNAV will automatically disengage:
Reaching a route discontinuity.
Logo lights are installed on:
Top of both horizontal stabilizers
Manual IRS entries of present position or magnetic heading are normally accomplished on the:
POS INIT page or the ISDU
What are the Fuel Temperature Limits?
- MIN: 3 degrees above the fuel freezing point (Jet A1 -47*C) or -43*C, whichever is higher (approx -44*C)
- MAX: +49* C
Moving the battery switch to OFF automatically shuts down the APU:
On the ground or in the air
Normally, N1 limits and targets N1 values are provided to the A/T by the:
Flight Management Computer (FMC)
Number 1 DRIVE light illuminates amber. This is directly caused by:
Low oil pressure in the IDG
Of the four lights located on the APU control panel, which light will NOT cause an automatic shutdown of the APU when it illuminates?
MAINT
On new aircraft (EI- DPY, DPZ) there are new annunciators installed. Which?
OVERWING?
On takeoff the config warning sounds. What can be the cause?
Trailing edge flaps are in a skew condition
On the Audio Control Panel (ACP) the Cabin Call lights comes ON. It will illuminate until:
Remains illuminated for 40 seconds
On the FMC FIX INFO page the RAD/DIS FR indicates:
The radial and distance from the fix to the airplane, this information will update as the aircraft changes position.
On the ground, for primary ATC communication:
Always use no. 1 VHF radio
On the ground, with both pack switches set to HIGH and both RECIRC FANs selected to AUTO:
The left recirculation fan will shut down
On the ground, with the BATTERY switch OFF and STANDBY POWER Switch in BAT, the Switched Hot Battery Bus is:
Not powered
On which CDU page is the ground speed displayed?
POS REF page 2
Once activated, a PSU oxygen supply:
Flows for approximately 12 minutes
Once activated, the APU DC operated fuel pump operates automatically until:
An AC fuel pump pressurises the manifold
Once the thrust reverse auto-stow circuit is activated:
The isolation valve remains open and the control valve is held in the stow position
One basic principle of operation for the 737 electrical system is:
There is no paralleling of the AC power sources (one source at a time)
or; when connecting a new source, the excisting one is automatically disconnected.
One of the purposes of the FMC FIX INFO page is to:
Create a new waypoint at the intersection of the active route with a radial or distance from a known fix.
Operating the airstairs from the exterior panel with the NORMAL/STANDBY switch to STANDBY:
Does not require the BAT switch to be ON
Operating the Cargo Fire DISCH Switch:
Discharges the total contents of the Cargo Compartment Fire Bottle into the FWD or AFT cargo hold
Operating the EXT TEST Switch:
To position 1 or 2 test bottle discharge circuits for all three extinguisher bottles
Operation of the overwing emergency exit flight locks are dependant on:
Engine speed, thrust lever position, air/ground mode status, door status, DC power
Placing the OVHT/FIRE TEST Switch to OVHT/FIRE position:
Tests
- overheat and fire detection loops on both engines ,
- fire detection on theAPU,
- and wheel well fire detector (latter only if AC power connected)
Placing the TEST switch, on fire protection panel, to FAULT/INOP position tests:
The fault detection circuit for both engines and APU.
Positioning the ENG ANTI-ICE switch to ON in flight:
Sets stick shaker logic for icing conditions only when ENG-ANTI ICE switch is ON unless WAI has been used. Does not update the Vref speeds in the FMC.
Positioning the Engine Start Lever to CUTOFF:
Closes both spar and engine fuel shutoff valves
Positioning the WING ANTI-ICE switch to ON, in flight:
Adjusts stick shaker and minimum manoeuvring speed bars on air speed tape and remains set for the remainder of the flight.
Predictive windshear alerts are issued when:
Below 1200ft RA
Prior to returning to the oil tank, engine oil passes through:
The scavenge filter and main engine oil cooler
PROBE HEAT switches are ON. What does this indicate?
They are Heated. No lights should be visible
Pulling an engine FIRE WARNING switch up:
- Arms 1 squib on each bottle
- Closes fuel valves
- Closes HYD valvle
- Deactivates LOW PRESSURE light
- Closes bleed air valve
- Trips Generator Relay and GCB
- Disables Thrust Reverser
Pulling the No 2 ENGINE FIRE SWITCH shuts off hydraulic fluid to the:
Engine driven pump in system B
Pulling up the APU fire warning switch:
- Trips the generator control relay and breaker,
- Arms the associated extinguisher
- Closes the bleed air valve,
- Closes the fuel shutoff valve,
- Closes the APU inlet door.