Term
| What type of landing gear does the C–5 and C–130 use? |
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Definition
| Modified tricycle landing gear. |
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Term
| Which type of landing gear consists of four main gears mounted in the fuselage in the form of a rectangle and two outriggers or wing tip protection gears? |
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Definition
| Quadricycle landing gear. |
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Term
| On tab-type indicator systems, what is displayed when the gear is in transit or until the gear reaches the full up or down and locked position? |
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Definition
| Diagonal stripes or barber poles. |
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Term
| How is the landing gear warning horn operated? |
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Definition
| By switches installed on the throttle quadrant. |
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Term
| What is the purpose of the shock strut? |
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Definition
| Carry the burden of supporting the aircraft and absorb the shock of landing. |
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Term
| What two telescoping cylinders are assembled to form the shock strut? |
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Definition
| Inner cylinder and outer cylinder. |
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Term
| What component connects the inner and outer cylinder to maintain correct alignment? |
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Definition
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Term
| What component is installed on the truck assembly to prevent the truck from porpoising? |
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Definition
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Term
| What is the function of the shimmy damper? |
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Definition
| Provide tracking of the aircraft during turns and prevent oscillation or shimmy during landing, takeoff, and taxiing |
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Term
| What are the two types of steer damper units presently used? |
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Definition
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Term
| What is used to ensure the sliding spool returns to the neutral position? |
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Definition
| By movement of the compensating piston and spring. |
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Term
| How is fluid in the steering metering control valve maintained in the dampening mode? |
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Definition
|
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Term
| How is the sliding spool of the steering metering valve positioned? |
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Definition
| By mechanical inputs into the valve. |
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Term
| In the steering mode of operation, how is system pressure blocked off? |
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Definition
| By the position of the sliding spool. |
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Term
| When is maximum braking action obtained? |
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Definition
| Just before the friction between the braking surfaces causes the wheel to lock. |
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Term
| What is the heart of the integral brake system? |
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Definition
| Power brake control valve (PBCV). |
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Term
| What ensures rapid application and release of brakes? |
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Definition
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Term
| What brake system consists of a slave-metering valve remotely controlled by a master cylinder? |
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Definition
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Term
| How is emergency hydraulic pressure supplied to the brake system? |
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Definition
| By the aircraft emergency hydraulic system or accumulator. |
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Term
| In the antiskid system, when does the shaft speed decrease in relation to flywheel speed? |
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Definition
| When enough excessive braking is applied to create a skidding tendency. |
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Term
| What term is used to describe a gradual loss of braking action due to overheating? |
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Definition
|
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Term
| What causes the multiple disc brake’s piston to move inward? |
|
Definition
|
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Term
|
Definition
| The space between the discs when the brakes are not applied. |
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Term
| What metals are used to make aircraft wheels? |
|
Definition
| Aluminum and/or magnesium alloy. |
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Term
| How is the removable flange held in place? |
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Definition
|
|
Term
| What is the purpose of the alignment marks on split wheels? |
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Definition
| To ensure the wheel halves are put together in their proper relationship. |
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Term
| At what temperature will the fusible metal core of the thermal plugs melt? |
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Definition
|
|
Term
| What type of wheel bearings are used on aircraft? |
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Definition
|
|
Term
| What makes up a complete bearing set? |
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Definition
| Bearing cone, tapered rollers, and a retaining cage. |
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Term
| What part of the bearing holds the assembly together? |
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Definition
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Term
| When cleaning a bearing with air, why should the bearing never be spun? |
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Definition
| Spinning can result in serious damage to the bearing. |
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Term
| What condition produces false brinelling? |
|
Definition
| Continued shaft oscillation due to vibration. |
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Term
| Which technical manual provides information concerning aircraft tires and tubes? |
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Definition
| 4T–1–3, Inspection, Maintenance Instructions—Storage and Disposition of Aircraft Tires and Inner Tubes. |
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Term
| What are the three main parts of an aircraft tire? |
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Definition
| Tread and sidewall, cord body, and beads. |
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Term
| Describe aircraft tire tread. |
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Definition
| A layer of rubber (or wire, fabric and rubber combination) on the outer circumference of a tire, which serves as the wearing surface |
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Term
| What part of an aircraft tire gives the tire its structural strength? |
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Definition
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Term
| The ply rating of a tire is an index of what factor? |
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Definition
| The tire strength (not necessarily the number of cord plies in a tire). |
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Term
| Why are vent holes or venting devices installed in tires? |
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Definition
| To prevent pressure buildup and separation of the cord plies or tread rubber. |
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Term
| How is a tubeless tire identified? |
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Definition
| By the word “tubeless” on the tire sidewall. |
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Term
| List the two methods used to determine allowable tire wear. |
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Definition
| Colored wear indicators and tread groove method. |
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Term
| What are the wear criteria on a retreadable aircraft tire less than 24 inches outside diameter? |
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Definition
| For tires less than 24 inches outside diameter, the tire shall be removed when wear reaches the bottom of any tread groove for a continuous length of four inches or when wear exposes top fabric layer. |
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Term
| Where might you find the allowable cut limits of a given tire? |
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Definition
| Embossed on the sidewall of the tire |
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Term
| On landing gear with dual tires, what action should be taken when one tire fails? |
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Definition
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|
Term
| If you suspect wheel or tire damage, from which direction should you approach the tire to deflate it? |
|
Definition
|
|
Term
| How does direct sunlight affect tire pressure? |
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Definition
| Tires in direct sunlight experience a somewhat higher pressure than those in shaded areas. |
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