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2206 final
Peters
| Question | Answer |
|---|---|
| 13-1 AM.II.F.K1 The purpose of the torque links attached to the cylinder and piston of a landing gear oleo strut is to | maintain correct wheel alignment |
| 13-2 AM.II.F.K1 When an air/oil type of landing gear shock strut is used, the initial shock of landing is cushioned by the | fluid being forced through a metered opening. |
| 13-3 AM.II.F.K1 The purpose of a locking/disconnect pin on a nose gear strut is to | disconnect steering when the aircraft is being towed. |
| 13-4 AM.II.F.K3 What is the purpose of a hydraulic restrictor on the piston end of a landing gear shock strut? | Restricts the speed of the extension stroke |
| 13-5 AM.II.F.K8 The metering pins in hydraulic shock struts serve to | retard the flow of oil as the struts are compressed. |
| 13-6 AM.II.F.K8 A sleeve, spacer, or bumper ring is incorporated in a landing gear hydraulic shock strut to | limit the extension stroke |
| 13-7 AM.II.F.K1 When servicing an air/oil shock strut with fluid, the strut should be | collapsed and fluid added at the filler opening. |
| 13-8 AM.II.F.K10 Extension of a shock strut is measured to determine the | proper operating position of the strut. |
| 13-9 AM.II.F.K11 When filling a shock strut with hydraulic fluid, fluid is added when the strut is in its position? | fully compressed |
| 13-10 AM.II.F.K1 Within an hydraulic landing gear retraction system on a small aircraft at what point in the circuit is an emergency freefall valve located? | Between the shuttle valve and each actuator. |
| 13-11 AM.II.E.K2 What is the purpose of hydraulic restrictors as used in a small aircraft nose gear retraction actuator? | slow the downward motion of the gear leg. |
| 13-12 AM.II.F.K2 The purpose of a sequence valve in a hydraulic retractable landing gear system is to | ensure operation of the landing gear and gear doors in the proper order. |
| 13-13 AM.II.F.K11 On all aircraft equipped with retractable landing gear, some means must be provided to | extend the landing gear if the normal operating mechanism fails. |
| 13-14 AM.II.F.K3 On a large aircraft which uses proximity sensors to indicate the position of the landing gear, which is the primary task of a mechanic during inspection of this components? | To check the spacing between the target and inductor. |
| 13-15 AM.II.F.K2 On an aircraft which is equipped with a squat switch to prevent inadvertent gear retraction, when the aircraft is on the ground, the squat switch circuit is | closed; inserting a lock pin. |
| 13-16 AM.II.F.K1 What typically controls the engagement of the centering cam on a light aircraft nose-wheel? | Weight on wheels. |
| 13-17 AM.II.F.K1 Nose gear centering cams are used in many retractable landing gear systems. The primary purpose of the centering device is to | center the nose-wheel before it enters the wheel well. |
| 13-18 AM.II.F.K1 When inspecting retractable landing gear rigging, always check the cylinder piston for over travel. Over travel is | a design feature to accommodate the landing gear latching mechanism. |
| 13-19 ΑΜ.ΙΙ.Ε.Κ11 What action should be taken whenever maintenance is performed that will affect the landing gear system performance? | The aircraft should be placed on jacks and a retraction test should be performed. |
| 13-20 AM.II.F.K10 Which repair would require a landing gear retraction test? | Gear lockdown microswitch. |
| 13-21 AM.II.F.K10 When inspecting wheel bearings, which condition is caused by friction heat from the movement between the bearing and its mating surface | galling |
| 3-22 AM.II.F.K10 Why is dye penetrant inspection typically ineffective when checking wheel halves for cracks? | Wheel cracks tend to close up tightly after being formed. |
| 13-23 AM.II.F.K9 When a properly operating fusible plug has allowed a tire to deflate | it and all additional fusible plugs in that assembly should be replaced. |
| 3-24 AM.II.F.K10 The fusible plugs installed in some aircraft wheels will | melt at a specified elevated temperature. |
| 13-25 AM.II.F.K10 The greatest risk to an aircraft wheel assembly is due to | heat from excessive braking. |
| 13-26 AM.II.F.K10 The braking action of a Cleveland disk brake is accomplished by compressing a rotating brake disk between two opposite brake linings. Equal pressure on both sides of the rotating disk is assured by allowing the | caliper to float to automatically equalize as pressure is applied to the rotor. |
| 13-27 AM.II.F.K10 Why are segmented disc brakes typically used on large high performance aircraft? | For better heat dissipation. |
| 13-28 AM.II.F.K10 What mostly limits the amount of heat, which can be dissipated by carbon brakes? | The melting point of adjacent system components. |
| 13-29 AM.II.F.K7 What brake component builds up all the pressure required for braking? | Master Cylinder |
| 13-30 AM.II.F.K2 What is the purpose of a compensating port or valve in a brake master cylinder of an independent brake system? | Permits the fluid to flow toward or away from the reservoir as temperature changes. |
| 13-31 AM.II.F.K7 A pilot reports that the right brake on an aircraft is spongy when the brake pedal is depressed in a normal manner. The probable cause is | air in the brake hydraulic system. |
| 13-32 AM.II.F.K7. What type of valve is used in the brake actuating line to isolate the emergency brake system from the normal po brake control valve system? | Shuttle Valve |
| 13-33 AM.II.F.K12 In large aircraft, what method of redundancy provides emergency braking in case of a partial system failure? | inboard and outboard wheels on each assembly a served separately. |
| 13-34 AM.II.F.K7 If a brake debooster is used in a hydraulic brake system, its position in the system will be | between the brake control valve and the brake actuating cylinder. |
| 13-35 AM.II.F.K1 Lockout deboosters are primarily pressure reducing valves that | allow full debooster piston travel without fluid from the high pressure side entering the low pressure chamber. |
| 13-36 AM.II.F.K1 Debooster cylinders are used in brake systems primarily to | reduce the pressure to the brake and increase the volume of fluid flow. |
| 13-37 AM.II.F.K1 In a brake anti-skid system, when an approaching skid is sensed, an electrical signal is sent to the skid control valve which | relieves the hydraulic pressure on the brake. |
| 13-38 AM.II.F.K2 At what point in the landing operation does normal skid control perform its function | when wheel rotation deceleration indicates an impending skid. |
| 13-39 AM.II.F.K8 1. An anti-skid system is designed to apply enough force to operate just below the skid point. 2. To operate the anti-skid system, flight deck switches must be placed in the ON position. Regarding the above statements, | Both No. 1 and No. 2 are true. |
| 13-40 AM.II.F.K8 In an anti-skid system, wheel skid is detected by | an electrical sensor. |
| 13-41 AM.II.F.K8 Anti-skid braking systems are generally armed by | a switch in the cockpit. |
| 13-42 ΑΜ.ΙΙ.Ε.Κ5 What serves as the nose gear steering shimmy damper on a large airplane? | Steering Actuator Cylinders |
| 13-43 AM.II.F.K8 In the air with the anti-skid armed, current cannot flow to the anti-skid control box because | landing gear squat switch is open. |
| 13-44 AM.II.F.K8 When a landing gear safety switch on a main gear strut closes at liftoff, which system is deactivated? | Anti-skid System |
| 13-45 AM.II.F.K5 Brake linings may remain in service until | it exceeds the individual manufacturer's wear specifications. |
| 13-46 AM.II.F.K5 In brake service work, the term "bleeding brakes" is the process of | withdrawing fluid from the system for the purpose of removing air that has entered the system. |
| 13-47 AM.II.F.K5 How can it be determined that all air has been purged from a master cylinder brake system? | By noting whether the brake is firm or spongy. |
| 13-48 AM.II.F.K5 The pressure source for power brakes is | A. the main hydraulic system. |
| 13-49 AM.II.F.K5 If it is determined that poor brake action is not caused by air in the brake system, what is the next most likely cause when hydraulic fluid is found on the floor away from the landing gear? | Loose or leaky brake system fittings. |
| 13-50 AM.II.F.K6 The left brake is dragging excessively on an airplane on which no recent brake service work has been performed. The most probable cause is | a weak return mechanism. |
| 13-51 ΑΜ.ΙΙ.Ε.Κ7 A pilot reports that the brakes squeal when applied. What is the likely cause? | A brake disk is misaligned or warped. |
| 13-52 AM.II.F.K4 What is the purpose of chines on an aircraft tire? | To deflect water away the fuselage. |
| 13-53 AM.II.F.K4 How long should you wait after a flight before checking tire pressure? | 3 hours after a typical landing. |
| 13-54 AM.II.F.K3 The best safeguards against heat buildup in aircraft tires are | short ground rolls, slow taxi speeds, minimum braking, and proper tire inflation |
| 13-55 AM.II.F.K5 Excessive wear in the center of the tread of an aircraft tire is an indication of | over inflation. |
| 13-56 AM.II.F.K1 Excessive wear in the shoulder area of an aircraft tire is an indication of | under inflation. |
| 13-57 AM.II.F.K2 When inspecting an aircraft tire you notice multiple small chevron shaped cuts throughout its tread area. You should | do nothing; this is an acceptable condition |
| 13-58 AM.II.F.K2 A high speed aircraft tire with a sound cord body and bead may be retread | an indefinite number of times. |
| 13-59 AM.II.F.K1 A stripe or mark applied to a wheel rim and extending onto the sidewall of a tube type tire is a | slippage mark. |
| 13-60 AM.II.F.K2 The primary purpose for balancing aircraft wheel assemblies is to | prevent heavy spots and reduce vibration. |
| 12-1 AM.II.I.K1 Phosphate ester base hydraulic fluid is very susceptible contamination from | water in the atmosphere. |
| 12-2 AM.II.F.K1 Which statement about fluids is correct? | All fluids readily transmit pressure. |
| 1. When servicing aircraft hydraulic systems, use the type fluid specified in the aircraft manufacturer's maintenance manual or instruction plate on the reservoir or unit. 2. Hydraulic fluids for aircraft are dyed a specific color for each type of fluid. | Both No. 1 and No. 2 are true. |
| 12-5 AM.II.F.K8 If a hydraulic brake system uses neoprene rubber packing materials, the correct hydraulic fluid to service the system is | mineral based oil |
| 12-6 AM.II.F.K8 If an aircraft hydraulic system requires mineral base hydraulic fluid, but phosphate ester based hydraulic fluid is used, what will be the effect on the system? | System will be contaminated, fluids will not blend, and the seals will fail. |
| 12-7 AM.II.I.K1 How can the proper hydraulic fluid to be used in an airplane be determined? | By consulting the alrcraft's Type Certificate Data Sheet |
| 12-8 AM.II.F.K10 One of the distinguishing characteristics of an open center selector valve used in a hydraulic system is that | fluid flows through the valve in the off position. |
| 12-9 AM.II.F.K11 Unless specifically stated by the manufacturer, which of these hydraulic system filter types typically has the longest service life? | Pressure Filters |
| 12-10 AM.II.F.K1 A hydraulic system referred to as a "power pack" system will | have all hydraulic power components located in one unit. |
| 12-11 AM.II.F.K2 Hydraulic fluid reservoirs are sometimes designed with a standpipe in one of the outlet ports in order to assure emergency supply of fluid. The outlet post with the standpipe in it furnishes fluid to the | normal system power pump. |
| 2-12 AM.II.F.K2 What is the main purpose of a pressurized reservoir in a hydraulic system? | Prevent hydraulic pump cavitation. |
| 12-13 AM.II.F.K11 Hydraulic fluid filtering elements constructed of porous paper are normally. | discarded at regular intervals and replaced with new filtering elements. |
| 12-14 AM.II.F.K3 Before removing the filter cap of a pressurized hydraulic reservoir | relieve the air pressure. |
| 12-15 AM.II.F.K2 What happens to the output of a constant displacement hydraulic pump when the hydraulic system pressure regulator diverts the fluid from the system to the reservoir? | The output pressure reduces, but the volume remains the same. |
| 12-16 AM.II.F.K1 A hydraulic pump is a constant-displacement type if it | delivers a uniform rate of fluid flow. |
| 12-17 AM.II.F.K1 What safety device is usually located between the driving unit and hydraulic pump drive shaft? | Pump Drive Coupling Shear Section |
| 12-18 AM.II.F.K1 Most variable displacement hydraulic pumps of current design | contain a built in means of system pressure regulation. |
| 12-19 AM.II.F.K2 With a hydraulic variable displacement pump in its normal pumping mode, what holds the pressure compensator in its closed position? | A spring. |
| 12-20 AM.II.F.K10 A sequence valve which is designed to activate a secondary function after a set pressure has been reached in a primary function may be found in some aircraft | landing gear systems. |
| 12-21 AM.II.F.K10 The purpose of an orifice check valve is to | restrict flow in one direction and allow free flow in the other. |
| 12-22 AM.II.F.K10 The unit which causes one hydraulic operation to follow another in a definite order is called a | sequence valve. |
| 12-23 AM.II.F.K9 Quick disconnect couplings in hydraulic systems provide a means of | quickly connecting and disconnecting hydraulic lines without loss of fluid or entrance of air into the system. |
| 2-24 AM.II.F.K10 Some hydraulic systems incorporate a device which is esigned to remain open to allow a normal fluid flow in me line, but closed if the fluid flow increases above an stablished rate. This device is generally referred to as | hydraulic fuse. |
| 12-25 AM.II.F.K10 What device in a hydraulic system with a constant delivery pump allows circulation of the fluid when no demands are on the system? | Pressure Regulator |
| 12-26 AM.II.F.K10 The purpose of the pressure regulator in a hydraulic system is to | maintain system operating pressure within a predetermined range and to unload the pump. |
| 12-27 AM.II.F.K10 Unloading valves are used with many engine driven hydraulic pumps to | relieve the pump pressure. |
| 12-28 AM.II.F.K10 The hydraulic component that automatically directs fluid from either the normal source or an emergency source to an actuating cylinder is called a | shuttle valve. |
| 12-29 AM.II.F.K7 A fully charged hydraulic accumulator provides | a source for additional hydraulic power when heavy demands are placed on the system. |
| Hydraulic system accumulators serve which of the following functions? 1. Dampen pressure surges. 2. Supplement the system pump when demand is beyond the pump's capacity. 3. Store power for limited operation of components if the pump is not operating. | 1, 2, and 3 |
| 12-32 AM.II.F.K7 If hydraulic fluid is released when the air valve core of the accumulator is depressed, it is evidence of | a ruptured diaphragm or leaking seals. |
| 12-33 AM.II.F.K7 After a hydraulic accumulator has been installed and air chamber charged, the main system hydraulic pressure gauge will not show a hydraulic pressure reading until | the fluid side of the accumulator has been charged. |
| 12-34 AM.II.F.K7 A hydraulic accumulator is charged with an air preload of 1,000 PSI. When a hydraulic system pressure of 3,000 PSI is developed, the pressure on the air side of the accumulator will be | 3,000 PSI. |
| 2-35 AM.II.F.K1 unit which transforms hydraulic pressure into linear motion is called | an actuating cylinder. |
| 2-36 AM.II.F.K1 Heat exchanger cooling units are required in some aircraft hydraulic systems to | extend service life of the fluid and components. |
| 12-38 AM.II.F.K2 A hydraulic motor converts fluid pressure to | rotary motion. |
| 12-39 AM.II.I.K8 Which of the following is the most commonly used seal to prevent internal and external leakage in both directions of a hydraulic unit? | U-ring |
| 12-40 AM.II.F.K8 An O-ring intended for use in a hydraulic system using MIL-H-5606 (mineral base) fluid will be marked with | a blue stripe or dot. |
| 12-41 AM.II.F.K8 What type of packings should be used in hydraulic components to be installed in a system containing Skydrol®? | Packing materials made for ester base fluids. |
| 12-42 AM.II.F.K8 What is the purpose of using backup rings with O-rings in high-pressure hydraulic systems? | To prevent high pressure sure from extruding the seal between the moving and stationary part. |
| 12-44 AM.II.F.K8 To protect packing rings or seals from damage when it is necessary to install them over or inside threaded sections, the | threaded section should be covered with a suitable sleeve. |
| 12-45 AM.II.F.K5 A pneumatic braking system on an aircraft derives its air from which source? | Ground-filled pressure bottles. |
| 12-47 AM.II.F.K5 Relief valves are used in pneumatic systems. | as damage preventing units. |
| 12-48 AM.II.F.K5 What function does a restrictor perform in the pneumatic power system? | Regulates the inlet air to provide a stabilized source of airflow and pressure. |
| 12-49 AM.II.F.K5 An aircraft pneumatic system, which incorporates an engine-driven, multistage reciprocating compressor, also requires | a moisture separator. |
| 12-50 AM.II.F.K6 What aspect of an aircraft pneumatic system must be considered on a daily basis? | both A. Removal of moisture. and B. Compressor oil - but mostly B |
| 12-51 AM.II.F.K5 What is done with expended air when an actuating unit operated in a pneumatic system? | It is exhausted overboard. |
| 12-52 AM.II.F.K4 A hydraulic system operational check during ground run-up of an aircraft indicates that the wing flaps cannot be lowered using the main hydraulic system, but can be lowered by using | The fluid level in the reservoir is low. |
| 12-53 AM.II.F.K4 A pilot reports that when the hydraulic pump is running, the pressure is normal. However, when the pump is stopped, no hydraulic pressure is available. This is an indication of a | leaking accumulator air valve. |
| 12-54 AM.II.F.K3 When flushing a hydraulic system thought to be contaminated, should be used. | clean hydraulic fluid that is the same as specified for the system |
| 12-55 AM.II.F.K5 Which of the following systems would be powered by a medium pressure pneumatic system? | Engine Starts |
| 12-56 AM.II.F.K1 Which type of pump is most commonly use in aircraft hydraulic systems? | Positive Displacement |
| 12-59 AM.II.F.K1 A common type of rotary actuator often used on nose wheel steering.is | rack and pinion. |
| 12-60 AM.II.F.K2 Power transfer units on transport category aircraft | use an operating EDP to drive components in a system with an inoperative EDP. |
Created by:
Lucas1999