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FAA Flight Instructor Sport Airplane Knowledge Test Practice Test

The FAA Flight Instructor Sport Airplane Knowledge Test (SIA) addresses aeronautical knowledge and instructional judgment for teaching in sport airplanes. Practice questions sample how an instructor explains aircraft stability and engine operation, guides preflight planning, and helps learners manage flight risks around weather, busy airspace, and airport movement areas.

Exam overview

Exam providerFederal Aviation Administration
Exam codeSIA
CategoryAviation

About the FAA Flight Instructor Sport Airplane Knowledge Test Exam

Preparing to teach these subjects means translating aircraft and operating information into clear student actions. Practice scenarios involve interpreting center-of-gravity effects, understanding the four-stroke piston-engine cycle, and recognizing how an alternator failure affects the electrical system. Planning decisions include estimating fuel from known quantity and expected consumption, responding to thunderstorms along a route, assessing crosswind information against aircraft limitations, and identifying steps for operating near a TFR. Other questions call for reading taxiway markings and deriving a runway’s approximate magnetic direction from its designation. Instructional judgment also matters when a learner becomes task-saturated: the instructor must prioritize aircraft control and help the student organize competing cockpit tasks.

Sample Practice Questions

Review a selection from this exam's published US Practice Tests practice bank.

Question 1

A learner is explaining how an airplane’s center of gravity affects stability. Which statement is generally correct?

  1. AA forward center of gravity usually increases longitudinal stability but can require greater control force
  2. BA forward center of gravity always makes the airplane easier to flare
  3. CAn aft center of gravity generally increases longitudinal stability
  4. DCenter-of-gravity location affects only cruise fuel consumption
Show answerCorrect answer: A

Within approved limits, a forward center of gravity generally tends to increase longitudinal stability and may increase control forces. An excessively forward CG can make rotation or flare difficult; an aft CG tends to reduce stability.

Question 2

During preflight planning, a student finds that the destination airport is reporting a crosswind stronger than the airplane's published demonstrated crosswind component. What is the best instructional guidance?

  1. ATreat the demonstrated component as a guaranteed maximum operating limit
  2. BExplain that it is not necessarily a limitation, but assess the student's and airplane's capability and consider another plan
  3. CIgnore the report if the runway is longer than the home runway
  4. DAdd the crosswind value to the airplane's maximum demonstrated airspeed
Show answerCorrect answer: B

A demonstrated crosswind component is generally a value shown during certification testing, not automatically a limitation. The instructor should teach risk-based judgment, including pilot proficiency, gusts, runway conditions, and the option to delay or divert.

Question 3

During a lesson, a student becomes task-saturated while communicating with air traffic control and flying near a busy airport. What should the instructor teach the student to do first?

  1. AMaintain aircraft control, then prioritize tasks and ask for assistance or clarification as needed
  2. BStop flying the airplane until the radio exchange is complete
  3. CMake rapid control inputs to finish the maneuver before responding
  4. DIgnore all traffic and continue the original plan without reassessment
Show answerCorrect answer: A

Maintaining control of the aircraft is the immediate priority. The pilot can then manage workload by simplifying tasks, communicating needs, using available assistance, and reassessing the plan.

Question 4

An airplane’s engine-driven alternator fails in flight, but the engine continues running normally. What electrical condition should the pilot expect?

  1. AThe battery will supply electrical loads for a limited time, so nonessential loads should be reduced in accordance with the checklist.
  2. BThe engine will stop immediately because the alternator directly supplies fuel to the engine.
  3. CThe battery will recharge itself as long as the propeller is turning.
  4. DAll electrical equipment will continue operating indefinitely at normal voltage.
Show answerCorrect answer: A

After an alternator failure, the battery may provide electrical power for a limited period, depending on its condition and electrical load. The pilot should follow the aircraft checklist and conserve power as directed.

Question 5

During a lesson, a learner sees a line of thunderstorms developing along the planned route. Which response best reflects sound risk management?

  1. AContinue if the airplane is below the clouds and visibility remains good
  2. BAvoid the hazardous weather by delaying, diverting, or canceling as appropriate
  3. CFly closer to the storms to shorten time spent in the area
  4. DRely on visual judgment alone to determine whether a thunderstorm is safe to cross
Show answerCorrect answer: B

Thunderstorms can produce severe turbulence, hail, lightning, wind shear, and rapidly changing conditions. A prudent pilot avoids them with ample distance and considers delaying, diverting, or canceling rather than attempting penetration.

Question 6

A learner is studying how a basic piston engine produces power. In a four-stroke cycle, which sequence is correct?

  1. AIntake, compression, power, exhaust
  2. BCompression, intake, exhaust, power
  3. CPower, exhaust, intake, compression
  4. DIntake, power, compression, exhaust
Show answerCorrect answer: A

In a four-stroke engine, the piston first draws the mixture into the cylinder during intake, compresses it, receives the power stroke after ignition, and then expels exhaust gases.

Question 7

A student is preparing for a flight in an airplane with a known fuel quantity but no reliable fuel-flow display. What is the soundest way to estimate fuel required?

  1. AUse the planned time, a conservative expected fuel-burn rate, and an appropriate reserve
  2. BUse distance alone because fuel consumption does not depend on time
  3. CAssume the published maximum range will be achieved in all conditions
  4. DPlan to use all usable fuel before reaching the destination
Show answerCorrect answer: A

Fuel planning should account for expected time en route, realistic fuel consumption, and a reserve appropriate to the operation and applicable requirements. Wind, routing, power setting, and other conditions affect fuel use and trip duration.

How to use this practice test

The free practice bank contains 50 published questions; each session presents up to 20 random questions. Answer the scenarios as if explaining the underlying decision to a learner, then use the results shown after the session to identify which concepts need more work.

Preparation tips

  • Explain how forward and aft center-of-gravity positions affect stability, and connect the explanation to loading decisions.
  • Trace the intake, compression, power, and exhaust strokes of a four-stroke engine; relate alternator failure to the airplane’s electrical system.
  • Work fuel-planning examples using usable fuel, expected consumption, and flight time when no reliable fuel-flow display is available.
  • Practice risk decisions for developing thunderstorms, strong crosswinds, TFRs, and high-workload operations near busy airports.
  • Review airport diagram markings and runway numbering, including the meaning of a continuous yellow line beside a dashed yellow line.
Official sourceOfficial exam page ↗