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FAA Instrument Rating Airplane Knowledge Test Practice Test

The FAA Instrument Rating Airplane Knowledge Test (IRA) addresses IFR operations in airplanes, including flight planning, clearances, navigation, and instrument approach procedures. Its practice-bank examples cover interpreting DME indications, applying airway changeover points, understanding clearance void times and lost-communications routing, and identifying decision altitude. These topics connect chart and instrument information to decisions pilots make before and during instrument flights.

Exam overview

Exam providerFederal Aviation Administration
Exam codeIRA
CategoryAviation

About the FAA Instrument Rating Airplane Knowledge Test Exam

Instrument-rated airplane pilots must translate an IFR clearance and published procedure into a usable route, then maintain situational awareness as conditions or instructions change. Relevant skills include interpreting navigation equipment indications, keeping heading information reliable, recognizing when a position report is needed in a non-radar environment, and applying published holding instructions correctly. Flight planning also involves evaluating hazards such as embedded thunderstorms and choosing a safer course of action rather than relying on a route that enters them. On an approach, pilots need to understand what decision altitude signifies and how it informs the next action. The practice-bank examples bring these tasks together through short scenarios involving communications, navigation, weather, and approach procedures; they are useful for checking whether you can apply concepts rather than merely recall terms.

Sample Practice Questions

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

Question 1

When flying an IFR procedure that uses DME, what does the displayed DME distance ordinarily represent?

  1. AHorizontal distance over the ground to the DME station.
  2. BSlant-range distance from the aircraft to the DME station.
  3. CDistance along the published airway to the next fix.
  4. DDistance to the station measured along the aircraft's flight path.
Show answerCorrect answer: B

DME measures slant-range distance between the aircraft and the ground station. At low altitude and far from the station, this is close to horizontal distance; directly over a station at altitude, the displayed distance can remain greater than zero.

Question 2

In the United States, what is the general purpose of an IFR clearance void time when ATC issues one for departure from a non-towered airport?

  1. AIt establishes the latest time the aircraft may depart under that clearance without obtaining further instructions.
  2. BIt is the time at which the clearance automatically becomes active, whether or not the aircraft has departed.
  3. CIt specifies how long the aircraft may remain in the departure area after takeoff.
  4. DIt gives the pilot permission to depart at any time after the void time.
Show answerCorrect answer: A

A clearance void time limits when a pilot may take off under the issued clearance. If unable to depart by that time, the pilot should follow the clearance instructions for advising ATC and obtaining further clearance rather than departing late on the voided clearance.

Question 3

What is the main operational purpose of an instrument flight plan in controlled airspace where one is required?

  1. AIt replaces the need for an ATC clearance
  2. BIt provides the basis for air traffic services and clearance handling for the planned IFR flight
  3. CIt guarantees the aircraft will receive radar service throughout the flight
  4. DIt authorizes flight into any weather conditions without regard to aircraft equipment
Show answerCorrect answer: B

An IFR flight plan provides information used by the ATC system to handle and provide services for the flight. Filing a flight plan is not itself an ATC clearance, nor does it guarantee continuous radar service.

Question 4

When flying an IFR route, what is the general purpose of a published airway changeover point?

  1. ATo identify where the pilot should change from one navigation facility to another for course guidance
  2. BTo mark the point at which the aircraft must begin descent for the destination
  3. CTo indicate where an IFR flight plan automatically terminates
  4. DTo show the location of the nearest emergency landing site
Show answerCorrect answer: A

A changeover point identifies where navigation reference should generally transfer between facilities along an airway, helping maintain accurate course guidance. It does not itself prescribe a descent or terminate the clearance.

Question 5

An aircraft is tracking a magnetic course using a heading indicator that has not been reset recently. What action is appropriate to maintain accurate heading information?

  1. ACompare it with the magnetic compass periodically and realign it as needed
  2. BSet it to the aircraft's GPS ground track
  3. CLeave it unchanged because gyroscopic headings do not drift
  4. DAlign it with the inclinometer ball
Show answerCorrect answer: A

A conventional heading indicator is subject to precession and can drift. Periodic comparison with the magnetic compass, made under suitable conditions, allows the pilot to correct the indication.

Question 6

While receiving an IFR clearance, a pilot is told to expect a specific route if communications fail. What is the principal purpose of that expected route information?

  1. ATo provide a route to use under applicable lost-communications procedures if a clearance limit is reached
  2. BTo authorize any direct routing the pilot prefers
  3. CTo replace the assigned altitude in the clearance
  4. DTo indicate the route that must be flown only in visual conditions
Show answerCorrect answer: A

The expected route is part of the clearance information used in lost-communications planning. The pilot must apply the applicable rules and clearance components; an expected route does not grant unrestricted routing authority.

Question 7

In a non-radar environment, what is the purpose of an IFR position report when required or requested?

  1. ATo provide ATC with the aircraft's position and relevant flight progress information
  2. BTo replace the need for an IFR clearance
  3. CTo confirm that the aircraft has completed an instrument approach
  4. DTo request automatic activation of the destination runway lights
Show answerCorrect answer: A

Position reports provide ATC with information such as the aircraft's location, time, altitude, and estimate for the next reporting point when applicable. They support traffic management where surveillance coverage is unavailable or limited.

How to use this practice test

The free practice bank contains 50 questions. Each session presents up to 20 random questions, with results shown after you finish. Use a session to identify which IFR tasks need more work, then revisit the relevant procedures or concepts before another set.

Preparation tips

  • Practice reading IFR charts and identify airway changeover points, published holding patterns, and approach decision altitudes in context.
  • For clearance scenarios, distinguish a clearance void time from an expected route after communications failure, and state the action each instruction supports.
  • Review how DME distance is measured and how an unrecently adjusted heading indicator can affect heading information.
  • Work through IFR weather-planning scenarios involving embedded thunderstorms, and compare safer alternatives to continuing into hazardous conditions.
  • For non-radar scenarios, identify when an IFR position report may be required or requested and the information it communicates.
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