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87 Cards in this Set
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AIRCRAFT LANDING GEAR SYSTEMS.1.what is the purpose of main landing gear torque links? |
They keep the land gear pointed in a straight ahead direction. |
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2.what is used to inflate landing gear shock strut? |
Dry air or nitrogen |
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3.what power source are normally used to retract landing gear system? |
Hydraulic or electric |
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4. what prevents nose landing gear from being retracted with the nosewheel out the centerposition? |
Nose wheel centering internal cams or external track |
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5. When should a landing gear retraction check be accomplished |
During an annual inspection (or other inspection ) when landing gear components have been ?replaced ,and after hard landings. |
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6.what methods are used for transmitting cockpit control movements to a steering control unit inlarge aircraft? |
Mechanical, electrical, or hydraulic |
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7. what type of nosewheel steering is provided on small aircraft? |
A simple system consisting of mechanical linkage hooked to the rudder pedals. |
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8.what unit prevents nose wheel vibration? |
A shimmy damper. |
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9. what prevents a split wheel from leaking air through the inner and outer mating surface, or thewheel assembly.? |
A rubber packing between the two assemblies |
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10. what is the indication of excessive heating of a wheel bearing? |
Discoloration,bluish tint to the metal surface. |
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11.what is the purpose of wheel fusible plug? |
To relive air pressure to prevent tire blowout |
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12. what are some types of brake actuating systems? |
Independent ,booster and power control. |
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13.what is the purpose of power brake debooster |
They reduce the pressure to the brakes and increase the volume of fluid flow |
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14.what is the purpose of an anti-skid system? |
To bring a fast moving aircraft to stop during ground roll without tire skidding. |
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15. what are some methods of bleeding brakes? |
Gravity and pressure methods |
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16. what must be accomplished before inspecting a wheel brake system for hydraulic leaks? |
Pressure the system |
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17. what is the most necessary maintenance function for safe,long aircraft tire service? |
Proper inflation |
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18. what are the effects of under inflation in tires? |
Rapid or uneven wear near the edge of tread and creep or slip when the brakes are applied |
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HYDRAULIC AND PNEUMATIC 1. what is three types of hydraulic fluids? |
Minerals,polyalphaolefins,and phosphate esters |
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2. what color is mineral base hydraulic fluid? |
Red.
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3. what happens to plastic resins vinyl composition lacquers and oil base paints if exposed to aphosphate ester base hydraulic fluid such as skydrol? |
The material will be damaged ,softened and or peeled |
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4. what precaution should be taken to minimize contamination during replacement of hydraulicunit? |
All lines should be plugge or capped after disconnecting |
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5. L6 what would cause a hydraulic filter to go in to open by pas allowing unfiltered fluid in tothe system? |
A clogged filter |
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6. what are two types of engine drive hydraulic pumps? |
Constant delivery and variable delivery |
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7. how does a gear type power pump operate? |
Two meshed gears revolve in a housing and are driven by power unit fluid is trapped andpressurized as the gears turn. |
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8. what feature is built in to hydraulic pump drive system to prevent engine damage in the eventof pump seizure or overload? |
A shear section in the pump drive shaft. |
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9. what is the purpose of a pressure relief valve? |
To limit the amount of pressure thereby preventing failure of the system components |
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11. what is used in some hydraulic systems to supplement the power pump when several unitsare operated at the same time? |
An accumulator. |
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12. what are the different types of accumulator? |
Spherical and cylindrical. |
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13.what must be accomplished with any accumulator prior to disassembling? |
Make sure the air or pre load has been discharge. |
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14. fo what purpose are pneumatic systems used in some aircraft? |
To operate brakes ,doors,drive,pumps,and engine starting |
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15. what are sources of pneumatic power? |
Storage bottles,van-type pumps and turbine engine compressors |
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16. what happens to excessive pressure in a pneumatic system? |
Relief valve will bleed it to the atmosphere. |
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17. what is the purpose of restrictors that are used in aircraft pneumatic systems? |
To control the rate of airflow |
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18. why should a pneumatic system be purged periodically? |
To remove contamination |
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CABIN ATMOSPHERE CONTROL 1.how does a continuous flow oxygen system operate? |
Oxygen flows from a charged cylinder through a high pressure line to reducing valve and tomask outlets |
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2. how dose a basic pressure demand oxygen system operate? |
Oxygen flows from charged cylinder to a pressure demand regulator ,adjustable by eachcrewmember. |
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3. what type of oxygen must be used in aircraft? |
Aviators breathing oxygen |
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4. what must be accomplished if an oxygen system has been open to atmosphere for 2 hours ormore? |
The system must be purged to remove ,moisture |
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5.what is used to purge oxygen lines of moisture? |
Dry nitrogen ,dryair,or oxygen. |
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6. what safety precaution should be observed when servicing oxygen systems? |
Clean,grease free tools,clothing,hands,no smoking ,or open flames within 50 feet do not useadhesive tape of any kind. |
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7. what are the two groups of independent cabin compressors? |
Positive displacement and centrifugal |
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8 what is roots blower ? |
An engine compressor. |
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9. what method is used by some turbine powered aircraft pressurization? |
Bleed air from the turbine engine compressor. |
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10. what pressurization control unit will change the position of an outflow? |
The cabin pressure controller |
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11. what is the principal control of pressurization system? |
An outflow valve |
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12. what components are used in an air cycle cooling system? |
An expansion turbine ,air to air heat exchange and various valves. |
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13. what components a temperature drop in an air cycle cooling system? |
The compressed air performs the work of turning a turbine and it undergoes a pressure andtemperature drop. |
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14. how does a water separator remove moisture from the air? |
The moisture air passes through vanes that swirl the air and the droplets are collected anddrain |
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15. what is vapor cycle cooling? |
A closed system in which a refrigerant is circulated through tubing and a variety of components to remove heat from the aircraft |
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16. what components are in a vapor cycle cooling system? |
A receive dryer,evaporator , compressor,condenser,and expansion valve. |
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17. why is oil added to a vapor cycle freon system? |
To seal and lubricate the compressor |
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18. what is the function of ventilating air in a combustion heater? |
the air is warmed and sent into the cabin. |
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19. what are courses of ventilating air a combustion heater? |
Blower fan or ram air |
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AIRCRAFT INSTRUMENT SYSTEMS.1.what can be used to static a manifold pressure indicator? |
Current atmospheric pressure. |
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2. what flight instruments are usually connected to a pitot-static system? |
Rate of climb,airspeed,and altimeter. |
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3. what causes an electric driven gyro rotor to tilt when the aircraft is turned? |
Gyroscopic precession |
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4. what indication errors may be found in altimeters? |
Scale,hysteresis and ,installation. |
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5. what is synchro type remote indicating system/ |
A system that transmits information from one point to another point (flap position) |
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6. what does a tachometer indicates? |
Crankshafts or main turbine rotor speed. |
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7.where does an electrical resistance temperature indicator receive a signal? |
From temperature sensitive element. |
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8.what type of indicating systems is turbine -engine exhaust gas temperature system ? |
A thermocouple typesystem |
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9. what methods are used to drive turn and bank slip indicator? |
Vacuum,air pressure or electricity |
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10.what is used as reference for range marking instrument? |
Aircraft specification or type certificate data sheets and flight manuals |
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11. what does a yellow arc on an instrument dial indicate? |
Caution. |
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12. why are slippage marks used on instrument glass covers? |
To indicate glass rotation in the bezel |
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13. when range markings are placed on an instrument glass what precaution must be taken? |
The glass must be marked for slippage indication. |
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14. what is required after replacement of components connected to pitot-static system? |
Leak test |
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15. what is the meaning of swinging compass? |
Correcting for deviations by adjusting the compensating magnets. |
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16. name at least two items that should be looked for during an inspection of magneticcompass? |
Security of attachment , correct reading at various headings , |
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COMMUNICATION AND NAVIGATION 1. what are three basic autopilot components? |
Sensing elements (gyros), out put elements (servos),command elements(flight controller) |
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2. what are the sensing elements of an autopilot system? |
A directional gyro, turn and bank gyro attitude gyro, and altitude control. |
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3. what are the actuating (out put) elements of an autopilot system? |
Servos that operate the control surface. |
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4. what is the most common communication system in use? |
Very high frequency (VHF) system |
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5. what is VOR equipment used for? |
Navigation. |
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6. what are the components of typical airborne VOR system? |
A receiver ,visual indicator, frequency selector, antennas and power supply |
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7. what is an ADF? |
An automatic direction finder |
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8. why are two antennas or single multi element antenna usually required for an ILS system |
One for the localizer , one for the glide slope receivers. |
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9. what information does a glide slope radio beam provide? |
Vertical guidance for correct angle of descent. |
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10. what is a DME? |
distance measuring equipment |
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11. where should DME antenna be located ? |
On the lower surface of the aircraft fuselage centerline |
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12. what powers an emergency locator transmitter (ELT)? |
Self contained battery. |
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13. what is one method used to monitor the output signal during an ELT test? |
VHF communication receiver tuned to 121.5 |
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14. what time of day should you perform the maintenance tests of an installed ELT? |
The test should be conducted during the first 5 minutes after the hour at any other time they |
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15. how does bonding help reduce radio interference? |
By providing a low impedance ground return. |
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16. how often does the ATC transponder requiercertification? |
Every 24 calendar months |
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17. how may the determination be made to replace or recharge the batteries in an ELT eventhough the set operators? |
The expiration date for replacing or for recharging is marked on the outside of the transmitterand entered in the aircraft maintenance record. |
