Airbus A320 – Landing Gear - SmartCockpit - Airline training guides, Aviation, Operations, Safety

The parking brake accumulator is designed to maintain the parking pressure for at least _____.

6 hours.

24 hours.

18 hours.

12 hours.

Correct! Wrong!

Wheel page on ECAM - if a Green arc becomes amber, and an ECAM caution appears, it means that the corresponding brake temperature exceeds:

350 deg.C.

300 deg.C.

250 deg.C.

400 deg.C.

Correct! Wrong!

If the BSCU (Braking Steering Control Unit) detects a brake system malfunction in flight with the A/SKID and N/W STRG switch in the ON position:

All statements are correct.

The flight crew will be notified with an ECAM message.

The flight crew must manually select alternate brakes.

The flight crew will be notified with an ECAM message after touchdown if the brake system does malfunction.

Correct! Wrong!

Maximum speed for landing gear retraction is:

200 kt.

220 kt.

250 kt.

235 kt.

Correct! Wrong!

Nose wheel steering is available when:

The Push button on either steering hand wheel is depressed.

Nose gear doors are closed.

All gear doors are closed.

Gear doors are open.

Correct! Wrong!

Nose wheel steering by rudder pedals is limited to:

Plus or minus 90 degrees.

Maximum plus or minus 6 degrees depending on aircraft speed.

Plus or minus 6 degrees under all conditions.

Plus or minus 75 degrees.

Correct! Wrong!

Landing gear operation is inhibited at speeds:

Below 100 knots and above 260 knots.

Below 100 knots.

Above 250 knots.

Above 260 knots plus or minus 5 knots.

Correct! Wrong!

What is required to arm the auto brakes?

At least one ADIRU in NAV mode and no failures in the braking system.

Green hydraulic pressure available, anti-skid electrically powered, no failures in the braking system, one ADIRU available.

Green hydraulic pressure available, antiskid available, at least one ADIRU in NAV mode.

Yellow hydraulic pressure above 2500 psi, at least one ADIRU in NAV mode and no failures in the braking system.

Correct! Wrong!

Can normal landing gear operation be restored after a gravity extension if green hydraulic pressure is available?

No, only maintenance can restore normal operation.

It may be possible if the gravity extension was not caused by a failure of the landing gear mechanism.

Restoration is always possible.

Correct! Wrong!

The braking modes are:

Green with anti-skid, Yellow without anti-skid, Parking brake.

Green or Yellow with anti-skid, Yellow without anti-skid, parking brake.

Green with or without anti-skid, Blue without anti-skid.

Correct! Wrong!

If the brake system automatically transitions to alternate brakes with the A/SKID and N/W STRG switch in the ON position, which of the following will be available?

Auto brakes and anti-skid.

Anti-skid.

Only auto brakes.

Brakes, auto brakes, anti-skid.

Correct! Wrong!

The Hot light on the brake fan pushbutton illuminates when brake temperature reaches:

400 deg C.

250 deg C.

300 deg C.

350 deg C.

Correct! Wrong!

When the aircraft is flying faster than _____, a safety valve automatically cuts off hydraulic supply to the landing gear system.

265 kt.

260 kt

255 kt.

250 kt

Correct! Wrong!

Below 260 kt, the hydraulic supply remains cut off as long as the landing gear lever is up.

The LGCIUs (Landing Gear Control Interface Units) control the sequencing of gear and doors hydraulically.

False.

True.

Correct! Wrong!

The LGCIUs control the sequencing of gear and doors electrically.

There are two triangles for each gear on the ECAM WHEEL page. What do they represent?

The front triangle indicates the position of that gear, and the back triangle indicates the status of the brakes for that gear.

Each triangle represents one of the braking systems available for that gear.

Each triangle represents one wheel on the gear.

Each triangle represents the position detected by one of the two computers systems.

Correct! Wrong!

The antiskid system gets its reference speed from:

The BSCU’s.

The ADIRS.

The LGCIU’s.

A wheel tachometer.

Correct! Wrong!

Max braking has been selected. Takeoff being aborted, engines in reverse, you have forgotten to arm the ground spoilers. Is autobrake activated?

No because spoilers will not deploy if not armed.

Yes, provided speed is less than 72 knots.

Yes, because spoilers will still deploy.

Yes, but only if Yellow hydraulic pressure is available.

Correct! Wrong!

The green DECEL light on the autobrake pushbutton illuminates when the actual airplane deceleration corresponds to what percentage of the selected rate?

95%.

80%.

92%.

90%.

Correct! Wrong!

You have just set the parking brake handle to ON. Is it still possible to check the main brake system using the toe brakes?

No. It is not possible to press hard enough to obtain an accurate reading.

No. When the PARK BRK is set, the other braking modes are deactivated.

Yes. As soon as you press the brake pedals the BRAKES indicator will read main system pressure.

Correct! Wrong!

The steering system centers the nose wheel automatically:

When the landing gear lever is set to UP.

When the hydraulic pressure is released after takeoff.

After liftoff.

Correct! Wrong!

If the landing gear was gravity extended using the hand crank on the center pedestal, landing gear position must be verified through:

The landing gear viewers.

The landing gear indications depicted on the ECAM and, if available, the center panel LDG GEAR indicator panel lights.

All statements are correct.

Correct! Wrong!

If a tire damage is suspected, an inspection of the tires is required before taxi. If the tire is deflated but not damaged, the aircraft can be taxied at low speed with one tire is deflated on one or more gears, then the speed should be limited to _____.

7 kt when turning.

3 kt.

7 kt.

7 kt and 3 kt when turning.

Correct! Wrong!

If the accumulator on the alternate brake system is your only source pressure, which of the following will be available?

Three applications of the brake pedals.

Auto brakes and antiskid.

Seven applications of the brake pedals.

Antiskid.

Correct! Wrong!

System page WHEEL - L/G position indicators (triangles), first line shows green triangles, second line behind shows amber crosses. Is the landing gear down?

No.

Left hand gear only is down.

Yes.

Right hand gear only is down.

Correct! Wrong!

Wheel page on ECAM - if you see a green arc shown over a wheel indication:

It marks the hottest brake with a temperature of more than 100 deg.C.

The L/G control system has detected a low tire profile.

The A/SKID system is automatically releasing the pressure of that brake.

It indicates an abnormal high temperature.

Correct! Wrong!

AUTO/BRK panel - The springloaded MAX, MED, and LO pushbutton switches arm the appropriate deceleration rate. MED mode sends progressive pressure to the brakes _____ after the ground spoilers deploy.

Between two and four seconds.

Between three and four seconds.

Two seconds.

Correct! Wrong!

LO mode sends progressive pressure to the brakes 4 seconds after the ground spoilers deploy.

The brake and accumulator pressure gauge shows pressure from:

The Green hydraulic system.

Both Yellow brake system and the Brake Accumulator.

The Accumulator only.

The Yellow hydraulic system.

Correct! Wrong!

Each main wheel has an antiskid brake.

False.

True.

Correct! Wrong!

What happens to the other brake modes when parking brakes are applied?

There is no change.

Antiskid mode only is deactivated.

All other braking modes and antiskid are deactivated.

Correct! Wrong!

During the approach you get master warning and ECAM "GEAR NOT DOWN". What is the true statement?

All statements are correct.

Landing gear is not down locked and flaps 3 or full and both radio altimeters failed

Landing gear is not down locked, flaps at 3 and radio height lower than 750 ft

Correct! Wrong!

For autobrake to activate, at least two SEC’s (Spoiler Elevator Computers) must be operative.

False.

True.

Correct! Wrong!

ALTERNATE BRAKING WITHOUT ANTI-SKID - Autobrake and antiskid are inoperative. To avoid wheel locking and limit the risk of tire burst, brake pressure is automatically limited to:

1 600 PSI.

800 PSI.

1 000 PSI.

2 000 PSI.

Correct! Wrong!

What does each turn of the gravity gear extension handle do?

Open gear doors, unlock gear, drop gear.

Shutoff hydraulic pressure, open doors, unlock gear.

Open gear doors, drop gear, shut doors.

Open gear doors, shutoffs hydraulics, unlock gear, drop gear.

Correct! Wrong!

Which hydraulic system(s) supply pressure to the landing gear system?

Green.

Blue.

Yellow and Blue.

Green and Blue.

Correct! Wrong!

Automatic braking is activated when the command for ground spoilers extension is detected for LO and MED mode, or the command for ground spoilers extension is detected, and the aircraft speed is _____, for MAX mode.

Above 30 kt.

Above 55 kt.

Above 40 kt.

Above 50 kt.

Correct! Wrong!

The red arrow, near the landing gear lever illuminates when:

Landing gear is in transit.

Landing gear is not up locked after retraction.

Landing gear is in abnormal position.

Landing gear is not down locked in approach configuration.

Correct! Wrong!

Auto brake may be armed with the parking brake on.

True.

False.

Correct! Wrong!

To put the landing gear down by gravity, the flight crew must pull the gear crank out, then turn it clockwise for _____ turns.

Four.

Three.

Five.

Six.

Correct! Wrong!

A hand crank on the center pedestal allows the flight crew to extend the landing gear if the aircraft loses hydraulic systems or electrical power.

What system pressure does the ACCU PRESS and BRAKES pressure indicator indicate?

Yellow brake accumulator and green or yellow brake system pressure to the left and right brakes.

Blue brake accumulator and green brake system pressure to the left and right brakes.

Yellow brake accumulator and green brake system pressure to the left and right brakes.

Yellow brake accumulator and yellow brake system pressure to the left and right brakes.

Correct! Wrong!

The gear doors remain open after a manual extension.

False.

True.

Correct! Wrong!

Following failure of all 3 ADIRS, is antiskid available?

Only with Yellow hydraulics.

Only with Green hydraulics.

No.

Yes, the speed for the fastest wheel becomes the reference in this case.

Correct! Wrong!

The normal brake system uses _ hydraulic pressure and the alternate brake system uses _ hydraulic pressure backed up by the hydraulic brake accumulator.

Green - Yellow.

Yellow - Green

Yellow - Blue

Green - Blue

Correct! Wrong!

Hand wheel and pedals are operated simultaneously:

Hand wheel input will not be affected by pedals.

Pedals have priority (depending on speed).

Hand wheel has priority.

BSCU transforms these orders into nose wheel steering angle (signals are mathematically added).

Correct! Wrong!

The alternate brake system uses:

The Blue electric pump.

The Yellow hydraulic system and the hydraulic accumulator.

The hydraulic accumulator.

The Yellow hydraulic system.

Correct! Wrong!

What is the maximum tire speed?

195 kt.

225 kt.

205 kt.

185 kt.

Correct! Wrong!

On the E/WD, during pushback the NW STRG DISC memo is displayed. What does it mean?

There is a discrepancy between the two nose wheel steering handwheel position transducers.

The nose wheel steering has been disconnected by ground personnel.

A failure in the nose wheel steering system has been detected.

The nose wheel steering computer has finished its self test.

Correct! Wrong!

If the parking brake is activated and no yellow hydraulic or accumulator brake pressure is available, then the normal braking system can be applied via the brake pedals.

True.

False.

Correct! Wrong!

On the ramp with APU running, parking brake is set on, message on ECAM memo shows PARK BRAKE.

In Yellow.

In Green.

In White.

In White or Yellow.

Correct! Wrong!

What is indicated by the autobrake DECEL lights?

Airplane deceleration is 25% of selected rate.

Airplane deceleration is 80% of selected rate.

Airplane deceleration is 90% of selected rate.

Airplane deceleration is 50% of selected rate.

Correct! Wrong!

Brake pressure is only indicated when the yellow hydraulic system controls the brake pressure. This is when the:

Parking brake is applied.

Alternate braking system is activated.

Alternate braking system is activated, or Parking brake is applied.

Correct! Wrong!

Nose wheel steering is controlled by:

LGCIU 1 or 2 (Landing Gear Control Interface Unit).

LGCIU 1 (Landing Gear Control Interface Unit).

BSCU (Braking Steering Control Unit).

LGCIU 2 (Landing Gear Control Interface Unit).

Correct! Wrong!

MAX autobrake mode can be armed in flight.

False.

True.

Correct! Wrong!

MAX autobrake mode cannot be armed in flight.

The antiskid deactivates when ground speed is less than _____.

20 kt.

10 kt.

30 kt.

25 kt.

Correct! Wrong!

The braking system is designed to hold the aircraft in a stationary position when a high thrust level is applied on at least one engine. It is not designed to hold the aircraft when high thrust level is applied on both engines. During ground procedures that require a thrust increase with braking, the flight crew must ensure that the aircraft remains stationary.

True.

False.

Correct! Wrong!

The braking system is not designed to hold the aircraft in a stationary position when a high thrust level is applied on at least one engine.

Autobraking is initiated by:

Nose gear oleo compression.

Main gear oleo compression.

Ground spoilers extension.

Reverse thrust selection.

Correct! Wrong!

The maximum speed with landing gear extended (VLE) is:

260 kt / M.65

320 kt / M.72

300 kt / M.70

280 kt / M.67

Correct! Wrong!

The steering handwheels, which are interconnected, can steer the nose wheel up to _____ in either direction.

55 degrees.

75 degrees.

90 degrees.

65 degrees.

Correct! Wrong!

If a tire damage is suspected, an inspection of the tires is required before taxi. If the tire is deflated but not damaged, the aircraft can be taxied at low speed. If two tires are deflated on the same main gear (the other main gear tires not being deflated), speed should be limited to _____ and the nose wheel steering angle limited to 30 degrees.

3 kt.

2 kt.

5 kt.

6 kt.

Correct! Wrong!

Landing gear indicator panel UNLK light illuminates red if:

Gear is not locked in selected position.

Gear is extended normally and doors are not closed.

Gear is not selected down by 1,000 ft RA.

Gear is extended by gravity and doors are not closed.

Correct! Wrong!

Which ADIRS close the safety valve of the green hydraulic supply when speed is above 260 kt.

ADIRS 2 or 3.

ADIRS 1 and 2.

ADIRS 1 and 3.

ADIRS 2 and 3.

Correct! Wrong!

The antiskid system provides maximum braking efficiency by maintaining the wheels at the limit of an impending skid. The antiskid system is deactivated _____

At or below 20 kt IAS.

At or below 10 kt (ground speed).

Below 15 kt IAS.

Below 20 kt (ground speed).

Correct! Wrong!

For towing and pushback, the nosewheel steering angle is limited to _____.

95 degrees.

85 degrees.

75 degrees.

90 degrees.

Correct! Wrong!

During pushback, the engine 2 has been started and the NW STRG DISC memo has changed to amber. What does it mean?

The nose wheel steering is being reconnected by ground personnel. It is amber because the pin is removed.

The memo has become amber because one engine is running.

The yellow hydraulic system is now pressurized and the amber caption is a warning not to move the handwheel.

The NW STRG disconnect mechanism has failed.

Correct! Wrong!

Auto brakes, if selected, will only be activated by:

The brake pedals being depressed.

The wheels spinning up.

The ground spoiler extension command.

The struts being compressed.

Correct! Wrong!

After takeoff the left main landing gear shock absorber is stuck in the compressed position.

The gear can be retracted provided the nose gear is centered.

The gear cannot be retracted, gear lever is blocked (interlock mechanism).

The gear can be retracted once the nose wheel steering is centered.

The gear can be retracted under all circumstances.

Correct! Wrong!

The landing gear indicator panel receives the information from micro switches and proximity detectors connected to:

LGCIU 1 (Landing Gear Control and Interface Unit).

LGCIU 2 (Landing Gear Control and Interface Unit).

BSCU (Braking Steering Control Unit) and LGCIU 2.

BSCU (Braking Steering Control Unit).

Correct! Wrong!

Landing Gear position is indicated by:

One panel on center instrument panel, one panel on overhead panel.

One panel on center instrument panel and ECAM.

ECAM only.

One panel on center instrument panel, ECAM, visual means on the wing.

Correct! Wrong!

Nose wheel steering is available:

Aircraft speed below 70 kt, both engines (required to be) running, Towing lever in normal position, aircraft on ground.

Aircraft speed below 70 kt, both engines (required to be) running), Towing lever in standby position, aircraft on ground.

Aircraft speed below 70 kt, one engine (required to be) running, Towing lever in normal position, aircraft on ground.

Aircraft speed below 70 kt, both engines (required to be) running, Towing lever in normal position, aircraft on ground or in the air.

Correct! Wrong!

The autobrake will arm if at least one ADIRU is functioning.

False.

True.

Correct! Wrong!

Braking modes - There are _____ modes of operation:

Four: Normal braking, Alternate braking, Emergency braking, and Parking brake.

Three: Normal braking, Alternate, Alternate braking and Parking brake.

Three: Normal braking, Alternate braking with antiskid, Parking brake.

Four: Normal braking, Alternate braking with antiskid, Alternate braking without antiskid and Parking brake.

Correct! Wrong!

If a tire damage is suspected, an inspection of the tires is required before taxi. If the tire is deflated but not damaged, the aircraft can be taxied at low speed with one tire is deflated on one or more gears, ie. a maximum of _____.

Two tires.

Three tires.

Four tires.

Correct! Wrong!

WHEEL SD PAGE - The landing gear positions are indicated by 2 triangles for each gear. Only one green triangle on each landing gear strut is sufficient to confirm that the landing gear is downlocked.

True.

False.

Correct! Wrong!

Nose wheels and main wheels have fusible plugs that prevent the tires from bursting if they overheat.

False.

True.

Correct! Wrong!

Only main wheels have fusible plugs.

In normal operation, the reference speed is determined by the BSCU from the horizontal acceleration of ADIRU 1, or ADIRU 2, or ADIRU 3. In case all ADIRUs fail, reference speed equals the minimum of either main landing gear wheel speeds.

True.

False.

Correct! Wrong!

Alternate braking using the Yellow system. Autobrake is:

Still available without anti-skid.

Still available provided Yellow system hydraulic pressure is available.

Lost.

Still available with anti-skid.

Correct! Wrong!

When the flight crew operates the crank handle, the cutout valve shuts off hydraulic pressure to the landing gear system and depressurizes it.

False.

True.

Correct! Wrong!

If the aircraft makes an acceleration stop and begins to decelerate when its speed is under _____, the automatic braking will not activate because the ground spoilers will not extend.

78 kt.

82kt.

72 kt.

92 kt.

Correct! Wrong!

When both hand wheels are operated simultaneously, the signals are algebraically added.

True.

False.

Correct! Wrong!

On wheel page of ECAM, Autobrake is flashing green. What does it mean?

Autobrake failure.

Anti-skid failure.

Autobrake in operation.

Autobrake is disengaged.

Correct! Wrong!

WHEEL SD PAGE - The landing gear positions are indicated by 2 triangles for each gear. A red triangle indicates that:

One LGCIU (Landing Gear Control and Interface Unit) detects a landing gear in transit.

One LGCIU (Landing Gear Control and Interface Unit) detects a landing gear uplocked.

LGCIU 1 (Landing Gear Control and Interface Unit) or LGCIU 2 has failed.

Correct! Wrong!

Two Landing Gear Control and Interface Units (LGCIUs) control the extension and retraction of the gear and the operation of the doors. They also supply information about the landing gear to ECAM for display, and send signals indicating whether the aircraft is in flight or on the ground to other aircraft systems.

True.

False.

Correct! Wrong!

When is pressure in the nose wheel steering system shut off?

With towing lever in towing position or both engines are shut down or the A/SKID and N/W STRG switch is OFF.

During ground towing with one engine shut down or when aircraft speed is above 60 kt.

When the aircraft is on the ground with speed above 100 kt.

Correct! Wrong!

Airbus A320 – Landing Gear

Airbus A320 – Landing Gear

The parking brake accumulator is designed to maintain the parking pressure for at least _____.

Wheel page on ECAM - if a Green arc becomes amber, and an ECAM caution appears, it means that the corresponding brake temperature exceeds:

If the BSCU (Braking Steering Control Unit) detects a brake system malfunction in flight with the A/SKID and N/W STRG switch in the ON position:

Maximum speed for landing gear retraction is:

Nose wheel steering is available when:

Nose wheel steering by rudder pedals is limited to:

Landing gear operation is inhibited at speeds:

What is required to arm the auto brakes?

Can normal landing gear operation be restored after a gravity extension if green hydraulic pressure is available?

The braking modes are:

If the brake system automatically transitions to alternate brakes with the A/SKID and N/W STRG switch in the ON position, which of the following will be available?

The Hot light on the brake fan pushbutton illuminates when brake temperature reaches:

When the aircraft is flying faster than _____, a safety valve automatically cuts off hydraulic supply to the landing gear system.

The LGCIUs (Landing Gear Control Interface Units) control the sequencing of gear and doors hydraulically.

There are two triangles for each gear on the ECAM WHEEL page. What do they represent?

The antiskid system gets its reference speed from:

Max braking has been selected. Takeoff being aborted, engines in reverse, you have forgotten to arm the ground spoilers. Is autobrake activated?

The green DECEL light on the autobrake pushbutton illuminates when the actual airplane deceleration corresponds to what percentage of the selected rate?

You have just set the parking brake handle to ON. Is it still possible to check the main brake system using the toe brakes?

The steering system centers the nose wheel automatically:

If the landing gear was gravity extended using the hand crank on the center pedestal, landing gear position must be verified through:

If a tire damage is suspected, an inspection of the tires is required before taxi. If the tire is deflated but not damaged, the aircraft can be taxied at low speed with one tire is deflated on one or more gears, then the speed should be limited to _____.

If the accumulator on the alternate brake system is your only source pressure, which of the following will be available?

System page WHEEL - L/G position indicators (triangles), first line shows green triangles, second line behind shows amber crosses. Is the landing gear down?

Wheel page on ECAM - if you see a green arc shown over a wheel indication:

AUTO/BRK panel - The springloaded MAX, MED, and LO pushbutton switches arm the appropriate deceleration rate. MED mode sends progressive pressure to the brakes _____ after the ground spoilers deploy.

The brake and accumulator pressure gauge shows pressure from:

Each main wheel has an antiskid brake.

What happens to the other brake modes when parking brakes are applied?

During the approach you get master warning and ECAM "GEAR NOT DOWN". What is the true statement?

For autobrake to activate, at least two SEC’s (Spoiler Elevator Computers) must be operative.

ALTERNATE BRAKING WITHOUT ANTI-SKID - Autobrake and antiskid are inoperative. To avoid wheel locking and limit the risk of tire burst, brake pressure is automatically limited to:

What does each turn of the gravity gear extension handle do?

Which hydraulic system(s) supply pressure to the landing gear system?

Automatic braking is activated when the command for ground spoilers extension is detected for LO and MED mode, or the command for ground spoilers extension is detected, and the aircraft speed is _____, for MAX mode.

The red arrow, near the landing gear lever illuminates when:

Auto brake may be armed with the parking brake on.

To put the landing gear down by gravity, the flight crew must pull the gear crank out, then turn it clockwise for _____ turns.

What system pressure does the ACCU PRESS and BRAKES pressure indicator indicate?

The gear doors remain open after a manual extension.

Following failure of all 3 ADIRS, is antiskid available?

The normal brake system uses _____ hydraulic pressure and the alternate brake system uses _____ hydraulic pressure backed up by the hydraulic brake accumulator.

Hand wheel and pedals are operated simultaneously:

The alternate brake system uses:

What is the maximum tire speed?

On the E/WD, during pushback the NW STRG DISC memo is displayed. What does it mean?

If the parking brake is activated and no yellow hydraulic or accumulator brake pressure is available, then the normal braking system can be applied via the brake pedals.

On the ramp with APU running, parking brake is set on, message on ECAM memo shows PARK BRAKE.

What is indicated by the autobrake DECEL lights?

Brake pressure is only indicated when the yellow hydraulic system controls the brake pressure. This is when the:

Nose wheel steering is controlled by:

MAX autobrake mode can be armed in flight.

The antiskid deactivates when ground speed is less than _____.

Autobraking is initiated by:

The maximum speed with landing gear extended (VLE) is:

The steering handwheels, which are interconnected, can steer the nose wheel up to _____ in either direction.

Landing gear indicator panel UNLK light illuminates red if:

Which ADIRS close the safety valve of the green hydraulic supply when speed is above 260 kt.

The antiskid system provides maximum braking efficiency by maintaining the wheels at the limit of an impending skid. The antiskid system is deactivated _____

For towing and pushback, the nosewheel steering angle is limited to _____.

During pushback, the engine 2 has been started and the NW STRG DISC memo has changed to amber. What does it mean?

Auto brakes, if selected, will only be activated by:

After takeoff the left main landing gear shock absorber is stuck in the compressed position.

The landing gear indicator panel receives the information from micro switches and proximity detectors connected to:

Landing Gear position is indicated by:

Nose wheel steering is available:

The autobrake will arm if at least one ADIRU is functioning.

Braking modes - There are _____ modes of operation:

If a tire damage is suspected, an inspection of the tires is required before taxi. If the tire is deflated but not damaged, the aircraft can be taxied at low speed with one tire is deflated on one or more gears, ie. a maximum of _____.

WHEEL SD PAGE - The landing gear positions are indicated by 2 triangles for each gear. Only one green triangle on each landing gear strut is sufficient to confirm that the landing gear is downlocked.

Nose wheels and main wheels have fusible plugs that prevent the tires from bursting if they overheat.

In normal operation, the reference speed is determined by the BSCU from the horizontal acceleration of ADIRU 1, or ADIRU 2, or ADIRU 3. In case all ADIRUs fail, reference speed equals the minimum of either main landing gear wheel speeds.

Alternate braking using the Yellow system. Autobrake is:

When the flight crew operates the crank handle, the cutout valve shuts off hydraulic pressure to the landing gear system and depressurizes it.

If the aircraft makes an acceleration stop and begins to decelerate when its speed is under _____, the automatic braking will not activate because the ground spoilers will not extend.

When both hand wheels are operated simultaneously, the signals are algebraically added.

On wheel page of ECAM, Autobrake is flashing green. What does it mean?

WHEEL SD PAGE - The landing gear positions are indicated by 2 triangles for each gear. A red triangle indicates that:

When is pressure in the nose wheel steering system shut off?

The normal brake system uses _ hydraulic pressure and the alternate brake system uses _ hydraulic pressure backed up by the hydraulic brake accumulator.