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INSTRUMENT SYSTEMS

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
show The airspeed indicator, the vertical speed indicator, and the altimeter.  
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What types of repairs or alterations can a certificated A&P mechanic make to aircraft instruments?   show
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What is the significance of a red radial line on the dial of an aircraft instrument?   show
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show A yellow arc marks a caution range of operation.  
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show A green arc indicates the normal range of operation.  
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show A white arc on an airspeed indicator indicates the airspeeds at which the flaps may be lowered.  
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What is used to warn a mechanic that the glass on an aircraft instrument that contains the range marks has slipped?   show
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Where can a mechanic find the range markings that are required on the instruments in a particular aircraft?   show
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show The static system must be checked for leaks.  
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Why are many of the electrical instruments mounted in steel cases?   show
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show The bonding straps carry the return current from the instruments into the aircraft structure.  
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show Deviation error.  
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What fluid is used in an aircraft magnetic compass?   show
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What is the maximum amount of deviation error that is allowed when a magnetic compass is installed in an aircraft?   show
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show The altimeter must not leak more than 100 feet in one minute. For a pressurized aircraft must not leak, in one minute, more than 2% of the equivalent altitude of the maximum differential pressure or 100 feet, whichever is greater.  
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show An instrument operated by a thermocouple is a current-measuring device. The resistance of the thermocouple and its leads must be kept at the value specified for the indicator.  
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What should a manifold pressure gage read when the engine is not operating?   show
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show A two-minute turn indicator gives a one-needle-width deflection for a standard rate of turn (three degrees per second). A four-minute turn indicator gives a one-needle-width deflection for a half-standard rate of turn (1-1/2 degrees per second).  
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What is the difference between a turn and slip indicator and a turn coordinator?   show
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What is used as the sensor in the fuel tank for an electronic-type fuel quantity indicating system?   show
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Why is a dual tachometer used on a single-engine helicopter?   show
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show In percentage of the takeoff RPM.  
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show An averaging system made up of a series of thermocouples arranged around the inside of the exhaust duct of the engine.  
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show There is probably an open in the bulb circuit that is causing the instrument to see an infinite resistance. The higher the resistance of the bulb circuit, the further the needle moves across the dial.  
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show A pressure gage that measures the pressure drop across the injector nozzles.  
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What two sources of power are used to operate the gyro instruments in an aircraft?   show
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Created by: Aima2019
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