FAA Aircraft Dispatcher Knowledge Test Practice Test
Aircraft dispatcher knowledge spans flight planning and operational coordination, including aviation weather, aircraft systems, navigation, and the effects of wind and atmospheric conditions on a flight. Practice questions sample terms and relationships used to interpret weather reports, assess aircraft performance factors, and understand how instruments and systems support safe flight operations.
Exam overview
About the FAA Aircraft Dispatcher Knowledge Test Exam
Dispatcher work requires combining weather information, route conditions, aircraft capabilities, and operational constraints when evaluating a flight. Relevant concepts include METAR identification, temperature inversions, and mechanical turbulence, as well as how headwinds affect groundspeed and how crosswind components matter during landing assessment. Aircraft knowledge includes interpreting magnetic heading, understanding altimeter settings near airports, and recognizing the functions of turbine compressors, transponders, and hydraulic systems. Strong preparation connects each term to its operational consequence: what information a report provides, how a condition may affect flight, or what system function supports an aircraft task. These skills help organize flight-planning information and communicate operational considerations clearly with pilots and air traffic control.
Sample Practice Questions
Review a selection from this exam's published US Practice Tests practice bank.
Which instrument is primarily used to determine an aircraft’s heading relative to magnetic north?
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Correct answer: CA magnetic compass indicates direction relative to magnetic north, subject to known errors and aircraft-specific compass deviations.
A temperature inversion is present when temperature generally increases with altitude through a layer. Which effect can this condition have on the atmosphere near the layer?
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Correct answer: AAn inversion is a stable atmospheric arrangement that tends to inhibit vertical motion and mixing. It may trap haze or other pollutants below the inversion, but it does not guarantee any particular weather event.
Which factor is most directly responsible for the formation of mechanical turbulence near the surface?
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Correct answer: ASurface obstacles and uneven terrain disrupt airflow, producing mechanical turbulence downwind or above the roughness. Its severity depends in part on wind speed and obstacle characteristics.
What is the main purpose of a turbine engine’s compressor section?
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Correct answer: AThe compressor raises the pressure of air entering the engine so it can support efficient combustion. The combustor then adds energy by burning fuel in the compressed airflow.
What does a pilot ordinarily use an altimeter setting to make the altimeter indicate near an airport?
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Correct answer: CSetting the local altimeter setting calibrates the instrument so it indicates altitude above mean sea level near the reporting station. A separate height-above-ground indication is provided by an appropriate radar altimeter, not the barometric setting.
A dispatcher is preparing a route forecast that includes a headwind component. What effect does a headwind generally have on an aircraft’s groundspeed, all else being equal?
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Correct answer: AGroundspeed is the aircraft’s speed relative to the ground. A headwind opposes the aircraft’s motion and generally reduces groundspeed for a given airspeed.
What is the main function of an aircraft’s transponder when operating with air traffic control radar?
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Correct answer: BA transponder replies to radar interrogations with a code and, when equipped and appropriately interrogated, may provide additional information such as altitude. It does not choose the route or report fuel quantity.
How to use this practice test
The free US Practice Tests bank contains 50 published questions for this exam. A practice session presents up to 20 randomly selected questions, then shows results. Use a session to identify missed concepts—such as weather interpretation, wind effects, instrument indications, or aircraft-system functions—and target those gaps in follow-up review.
Preparation tips
- For METAR practice, identify the report type and translate each weather observation into information relevant to route or airport conditions.
- Work wind-component examples by separating headwind, tailwind, and crosswind effects; connect each component to groundspeed or landing considerations.
- Review how altimeter settings affect indicated altitude near an airport, and distinguish magnetic heading from other directional references.
- For aircraft systems, explain the operational purpose of the compressor, transponder, and hydraulic system rather than memorizing component names alone.
- Compare temperature inversions with ordinary lapse conditions, and relate surface obstacles and terrain to mechanical turbulence.