Airbus A320 - Landing gear

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

Each triangle represents one wheel on the gear.

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 the position detected by one of the two computers systems.

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.

92 kt.

78 kt.

82kt.

72 kt.

Correct! Wrong!

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

Shutoff hydraulic pressure, open doors, unlock gear.

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

Open gear doors, drop gear, shut doors.

Open gear doors, unlock gear, drop gear.

Correct! Wrong!

The steering system centers the nose wheel automatically:

When the hydraulic pressure is released after takeoff.

After liftoff.

When the landing gear lever is set to UP.

Correct! Wrong!

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

55 degrees.

75 degrees.

65 degrees.

90 degrees.

Correct! Wrong!

What is required to arm the auto brakes?

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

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.

Correct! Wrong!

The braking modes are:

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

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

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

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?

Brakes, auto brakes, anti-skid.

Only auto brakes.

Anti-skid.

Auto brakes and anti-skid.

Correct! Wrong!

Hand wheel and pedals are operated simultaneously:

Hand wheel input will not be affected by pedals.

Hand wheel has priority.

Pedals have priority (depending on speed).

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

Correct! Wrong!

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

75 degrees.

85 degrees.

95 degrees.

90 degrees.

Correct! Wrong!

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

Antiskid mode only is deactivated.

All other braking modes and antiskid are deactivated.

There is no change.

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!

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

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

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

All statements are correct.

Correct! Wrong!

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

ADIRS 1 and 3.

ADIRS 1 and 2.

ADIRS 2 or 3.

ADIRS 2 and 3.

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!

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

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

The gear can be retracted under all circumstances.

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

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

Correct! Wrong!

Maximum speed for landing gear retraction is:

235 kt.

250 kt.

220 kt.

200 kt.

Correct! Wrong!

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

80%.

90%.

95%.

92%.

Correct! Wrong!

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

It indicates an abnormal high temperature.

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.

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.

2 kt.

5 kt.

6 kt.

3 kt.

Correct! Wrong!

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

Blue.

Yellow and Blue.

Green.

Green and Blue.

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.

False.

True.

Correct! Wrong!

Following failure of all 3 ADIRS, is antiskid available?

Only with Green hydraulics.

Only with Yellow hydraulics.

No.

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

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 _____.

Three tires.

Two tires.

Four tires.

Correct! Wrong!

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

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

Restoration is always possible.

No, only maintenance can restore normal operation.

Correct! Wrong!

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

Yes, provided speed is less than 72 knots.

No because spoilers will not deploy if not armed.

Yes, but only if Yellow hydraulic pressure is available.

Yes, because spoilers will still deploy.

Correct! Wrong!

The brake and accumulator pressure gauge shows pressure from:

The Yellow hydraulic system.

The Green hydraulic system.

Both Yellow brake system and the Brake Accumulator.

The Accumulator only.

Correct! Wrong!

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

Landing gear is in abnormal position.

Landing gear is not up locked after retraction.

Landing gear is in transit.

Landing gear is not down locked in approach configuration.

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.

False.

True.

Correct! Wrong!

Each main wheel has an antiskid brake.

False.

True.

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. When the PARK BRK is set, the other braking modes are deactivated.

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

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

Correct! Wrong!

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

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

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.

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:

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.

All statements are correct.

The flight crew will be notified with an ECAM message.

Correct! Wrong!

The alternate brake system uses:

The Yellow hydraulic system and the hydraulic accumulator.

The Blue electric pump.

The hydraulic accumulator.

The Yellow hydraulic system.

Correct! Wrong!

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

In Yellow.

In White or Yellow.

In White.

In Green.

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 40 kt.

Above 30 kt.

Above 50 kt.

Above 55 kt.

Correct! Wrong!

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

18 hours.

24 hours.

12 hours.

6 hours.

Correct! Wrong!

What is indicated by the autobrake DECEL lights?

Airplane deceleration is 25% of selected rate.

Airplane deceleration is 50% of selected rate.

Airplane deceleration is 80% of selected rate.

Airplane deceleration is 90% of selected rate.

Correct! Wrong!

Nose wheel steering by rudder pedals is limited to:

Plus or minus 6 degrees under all conditions.

Plus or minus 75 degrees.

Maximum plus or minus 6 degrees depending on aircraft speed.

Plus or minus 90 degrees.

Correct! Wrong!

Nose wheel steering is controlled by:

BSCU (Braking Steering Control Unit).

LGCIU 1 (Landing Gear Control Interface Unit).

LGCIU 2 (Landing Gear Control Interface Unit).

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

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:

800 PSI.

1 600 PSI.

2 000 PSI.

1 000 PSI.

Correct! Wrong!

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

False.

True.

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.

All statements are correct.

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

Correct! Wrong!

Nose wheel steering is available when:

Gear doors are open.

The Push button on either steering hand wheel is depressed.

All gear doors are closed.

Nose gear doors are closed.

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 - Blue

Green - Yellow.

Yellow - Blue

Yellow - Green

Correct! Wrong!

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

The struts being compressed.

The brake pedals being depressed.

The ground spoiler extension command.

The wheels spinning up.

Correct! Wrong!

MAX autobrake mode can be armed in flight.

True.

False.

Correct! Wrong!

MAX autobrake mode cannot be armed in flight.

Autobraking is initiated by:

Main gear oleo compression.

Reverse thrust selection.

Nose gear oleo compression.

Ground spoilers extension.

Correct! Wrong!

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

Auto brakes and antiskid.

Three applications of the brake pedals.

Antiskid.

Seven applications of the brake pedals.

Correct! Wrong!

Landing Gear position is indicated by:

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

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

ECAM only.

One panel on center instrument panel and ECAM.

Correct! Wrong!

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

255 kt.

260 kt

250 kt

265 kt.

Correct! Wrong!

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

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

250 deg C.

300 deg C.

400 deg C.

350 deg C.

Correct! Wrong!

Braking modes - There are _____ modes of operation:

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

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

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

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

Correct! Wrong!

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.

False.

True.

Correct! Wrong!

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

False.

True.

Correct! Wrong!

Landing gear indicator panel UNLK light illuminates red if:

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

Gear is not locked in selected position.

Gear is extended normally and doors are not closed.

Gear is extended by gravity and doors are not closed.

Correct! Wrong!

Alternate braking using the Yellow system. Autobrake is:

Still available provided Yellow system hydraulic pressure is available.

Lost.

Still available without anti-skid.

Still available with anti-skid.

Correct! Wrong!

Auto brake may be armed with the parking brake on.

False.

True.

Correct! Wrong!

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

Autobrake failure.

Anti-skid failure.

Autobrake is disengaged.

Autobrake in operation.

Correct! Wrong!

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

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

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!

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

Three.

Four.

Six.

Five.

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 is the maximum tire speed?

205 kt.

195 kt.

185 kt.

225 kt.

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 NW STRG disconnect mechanism has failed.

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

The memo has become amber because one engine is running.

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.

3 kt.

7 kt when turning.

7 kt and 3 kt when turning.

Correct! Wrong!

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

True.

False.

Correct! Wrong!

Only main wheels have fusible plugs.

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

True.

False.

Correct! Wrong!

The LGCIUs control the sequencing of gear and doors electrically.

Landing gear operation is inhibited at speeds:

Below 100 knots.

Above 260 knots plus or minus 5 knots.

Below 100 knots and above 260 knots.

Above 250 knots.

Correct! Wrong!

The gear doors remain open after a manual extension.

True.

False.

Correct! Wrong!

The antiskid deactivates when ground speed is less than _____.

10 kt.

20 kt.

25 kt.

30 kt.

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.

False.

True.

Correct! Wrong!

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

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

Alternate braking system is activated.

Parking brake is applied.

Correct! Wrong!

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

True.

False.

Correct! Wrong!

The antiskid system gets its reference speed from:

The BSCU’s.

The ADIRS.

The LGCIU’s.

A wheel tachometer.

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 _____

Below 20 kt (ground speed).

Below 15 kt IAS.

At or below 20 kt IAS.

At or below 10 kt (ground speed).

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?

Right hand gear only is down.

No.

Left hand gear only is down.

Yes.

Correct! Wrong!

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

BSCU (Braking Steering Control Unit) and LGCIU 2.

LGCIU 2 (Landing Gear Control and Interface Unit).

LGCIU 1 (Landing Gear Control and Interface Unit).

BSCU (Braking Steering Control Unit).

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.

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

The nose wheel steering has been disconnected by ground personnel.

The nose wheel steering computer has finished its self test.

Correct! Wrong!

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

320 kt / M.72

260 kt / M.65

280 kt / M.67

300 kt / M.70

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.

Nose wheel steering is available:

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

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.

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.

Two seconds.

Between three and four seconds.

Between two and four seconds.

Correct! Wrong!

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

Airbus A320 – Landing Gear

Quiz

Airbus A320 - Landing gear

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

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.

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

The steering system centers the nose wheel automatically:

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

What is required to arm the auto brakes?

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?

Hand wheel and pedals are operated simultaneously:

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

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

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

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

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

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

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

Maximum speed for landing gear retraction is:

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

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

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

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.

Following failure of all 3 ADIRS, is antiskid available?

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 _____.

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

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

The brake and accumulator pressure gauge shows pressure from:

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

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.

Each main wheel has an antiskid brake.

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

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

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:

The alternate brake system uses:

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

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

What is indicated by the autobrake DECEL lights?

Nose wheel steering by rudder pedals is limited to:

Nose wheel steering is controlled by:

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:

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

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

Nose wheel steering is available when:

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

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

MAX autobrake mode can be armed in flight.

Autobraking is initiated by:

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

Landing Gear position is indicated by:

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

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

Braking modes - There are _____ modes of operation:

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.

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

Landing gear indicator panel UNLK light illuminates red if:

Alternate braking using the Yellow system. Autobrake is:

Auto brake may be armed with the parking brake on.

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

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

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

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

What is the maximum tire speed?

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

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 _____.

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

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

Landing gear operation is inhibited at speeds:

The gear doors remain open after a manual extension.

The antiskid deactivates when ground speed is less than _____.

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

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

The antiskid system gets its reference speed from:

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

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

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

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

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

Nose wheel steering is available:

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