Landing Gear 2

Small aircraft use a hydraulic pack containing the _________ and reversible ________ motor to extend & retract the gear.

How many gear retraction actuators are required on an aircraft equipped with fully retractable tricycle gear?

What component stops the pump when the gear is retracted?

What component ensures the gear will remain retracted after the pump stops and restart the pump as required thereafter?

On small aircraft, emergency cockpit release of the gear can be accomplished by pulling a red handle to open the ____-____ _____.

On large aircraft, what component will prevent gear retraction while on the ground?

These components are normally mechanically latched and hydraulically released.

How are the gear and doors coordinated for operation?

The retraction actuator will break the over-center of the ____ ____.

The retraction actuator extends to retract the gear and folds the ____ ____.

When the gear is selected down and extends, the over-center position of the lock stay prevents the ____ ____ from folding

With typical nose gear on larger airplanes, the ____ _____ folds to allow the gear to retract _______ into the wheel-well.

The Airbus A340-500 utilizes a modern "fly by wire" system which receives and transmits signals to all the components of each landing gear for precise operation. How is this control achieved? 

Lever selection on the gear control panel will provide a mechanical or electrical input to the ________ valve.

The purpose of this valve is to direct hydraulic fluid to the extend or retract side of the actuator.

Many actuators contain a __________ valve to decrease the rate of speed during extension.

For precision operation, up-locks contain special components. What are they known as?

What safety feature is available to lock-out hydraulically operated landing gear doors?

To ensure a smooth faired surface, landing gear doors are __________ and require _______ by you the maintainer!

This system is specifically used to interface with other aircraft systems, including brakes, ground spoilers and thrust reversers. What is it called?

What system will provide both gear door positions and configuration warnings to the crew?

Down & locked indication is provided by a _____ light for each gear.

An alternate method for confirming the gear is down and locked is by a visual indication on the gear itself. How is this indicated?

A typical proximity sensor may have to be adjusted precisely to very small values measured in _________ of an inch.

When would a gear retraction test be carried out on an aircraft?

Modern aircraft tires are too stiff to be forced over the rims. Consequently, most wheels are now ___ _____ units.

Due to high tensile loads applied by the tire, the ____ ____ area is crucial in design. 

Two piece wheels include split-hub-type and ______ type. 

Cast or forged aluminum alloy is popular in construction of aircraft wheels as well as this type material.

Inner and outer halves of the split hub design can hold the cones and receive these tapered components. 

What is installed between the wheel halves to ensure the pressure doesn't leak out?

What is one component that is found on the outer halve of the wheel?

The tire is always placed on the _____ half of the wheel before installing the _____ half of the wheel. 

The inboard half of the wheel holds the inner _______ and accommodates the _____.

As well as an inflation valve, the outer half of the wheel may have a tire pressure _________.

Steel ____ around the inside circumference of the wheel with a multi-disc-brake mate with the _____ in the brake discs that turn with the wheel.

A Cleveland brake is comprised of how many discs?

What helps prevent heat transfer from the brake to the tire?

What component is found at the center of the wheel and located on both halves?

This component will deflate the tire in the event of an overheat condition caused by heavy braking.

When assembling a wheel unit, the ______ sequence is ________!!

When replacing a wheel on an aircraft, the _____ and ________ should be replaced.

What component holds the flange to the main hub assembly?

What component may be behind the inner portion of the wheel assembly when you remove it from the axle?

Before removing the axle nut, what should you do for safety?              Release the ____ pressure.

For ease of removal and installation of the wheel assembly and to protect the axle from damage. What two components would you use to help with this job?

When you remove the wheel from the axle you must _____, _______ and reapply grease.

Always torque the axle nut in accordance with the __ specifications.

What is the final step when installing an aircraft wheel?

Never remove two wheels from the same axle at the same time in the event the ____ collapses.

The first step in disassembling an aircraft wheel assembly is to _____ the ____ on the tire.

A common place for corrosion to form is the ___ area,  where moisture could get trapped between the ____ and wheel.  

What methods are used to detect fine cracks on wheel units?

The ____ ____ area is the most critical area to inspect because of the high stress _____.

During wheel inspection, you locate a fusible plug that appears to be damaged. What should you do?

Where would you find the information pertaining to suitable grease for the bearings?

Aircraft wheels having a diameter in excess of 10 inches are __________ balanced during manufacture.

If weight is to be added to the wheel for fine balancing, it can placed at the rim or at the wheel ____ circle.

Balancing is accomplished by installing weight ________ the heavy point.

Wheel alignment can involve "toe" __ or ___ and ______.

Toe adjustments on large aircraft with shock absorbing struts would be accomplished by placing _______ at the ________.

What are split-hub and flange-type referencing?

Can the tire be balanced?

How would you clean a dirty bearing?

Dark symmetrical lines on bearings are indication of what?

A “conventional” landing gear consists of:

Identify the component that accommodates the gear pin

What is a common practice when towing an aircraft

When towing an aircraft with oleo struts, the nose gear scissors should be disconnected and:

What is the purpose of the baulk on the landing gear lever?

What must be accomplished after a main gear actuator change?

What are the two common types of aircraft wheels?

What must be accomplished before loosening the axle nut

When towing an aircraft with oleo struts, the nose gear scissors should be disconnected and:

To service an oleo:

The aircraft is in-flight and the L/G system does not have any position lights illuminated in the cockpit, what answer best describes this condition?

Which procedure would you use to lock out a L/G Door on a typical airliner to work safely in the hangar?