50% off — use code LAUNCH50

AviaSkill
Instrument Rating Knowledge Test

Prepare for the FAA Instrument Rating Written Exam

Instrument procedures, navigation systems, weather theory, and IFR regulations — all covered with AI-powered explanations and adaptive study tools aligned to the FAA Airman Certification Standards.

Start Your Free TrialSee How It Works

7-day free trial. No credit card required. Full access to all IFR content.

8
ACS Areas Covered
60
Questions Per Exam
150 min
Exam Time Limit
70%
Passing Score

What is the FAA Instrument Rating Knowledge Test?

The Instrument Rating Knowledge Test is the written exam required before you can earn your Instrument Rating — the qualification that allows you to fly in instrument meteorological conditions (IMC), including clouds, low visibility, and controlled airspace under IFR flight rules.

The exam covers 8 Areas of Operation defined by the FAA Airman Certification Standards (FAA-S-ACS-8C), focusing on instrument flight procedures, navigation systems, weather analysis, and IFR regulations. You'll have 150 minutes to answer 60 multiple-choice questions, and you need a score of 70% or higher to pass.

The IFR written exam is widely considered more challenging than the PPL test — not because of the format, but because the material is more technical. Topics include interpreting approach plates, understanding navigation systems (VOR, GPS, ILS), analyzing complex weather phenomena, and applying intricate regulatory requirements. A solid study plan with quality practice questions makes a significant difference.

All 8 ACS Areas — Fully Covered

Every Area of Operation in FAA-S-ACS-8C, in the order the ACS lists them.

I

Preflight Preparation

Pilot qualifications, weather information for IFR flight, cross-country flight planning

II

Preflight Procedures

Aircraft systems for IFR operations, flight instruments and navigation equipment, instrument flight deck check

III

Air Traffic Control Clearances and Procedures

Compliance with ATC clearances, holding procedures, IFR communications

IV

Flight by Reference to Instruments

Attitude instrument flying, instrument scan, recovery from unusual flight attitudes

V

Navigation Systems

Intercepting and tracking navigational systems and DME arcs; departure, en route, and arrival operations

VI

Instrument Approach Procedures

Non-precision and precision approaches, missed approach, circling approach, landing from an instrument approach

VII

Emergency Operations

Loss of communications (91.185), approach with loss of primary flight instrument indicators

VIII

Postflight Procedures

Checking instruments and equipment after the flight

Start Studying

How AviaSkill Helps You Pass

The same six powerful study tools, tailored for Instrument Rating preparation.

What is density altitude andwhy does it affect performance?AI · PLAIN LANGUAGEThink of it as the altitude your plane“feels.” Hot, humid, or high = thinnerair = less lift and thrust.

AI Explanations

Detailed breakdowns of approach procedures, navigation concepts, and weather theory — with direct links to relevant AIM and PHAK sections

Learn more
Today's adaptive planAerodynamics78%Weather42%Navigation91%

Smart Study

Focus on your weakest IFR topics — navigation systems, approach procedures, or weather — with AI-optimized sessions

Learn more
What is Class B airspace, like I'm five?Imagine a big upside-down wedding cakearound the busiest airports. Only pilotswith a clearance can fly inside — it keepstraffic safe near places like JFK or LAX.Do I need a radio to enter?

AI Tutor

"Walk me through an ILS approach." "What's the difference between LNAV and LPV?" Get instant, detailed answers 24/7

Learn more
Backed by FAA Handbooks

Backed by FAA Handbooks

Every IFR question is mapped to the exact handbook section you need — PHAK, AIM, instrument procedures

Learn more
Exam ReadinessExam in 6 daysYou're on track —keep it up!60%Topics mastered 6 / 100100

Progress & Readiness

Track mastery across all 8 IFR ACS areas — see exactly where you need more work before test day

Learn more
Question 2441:22Minimum VFR visibility in Class G airspacebelow 1,200 ft AGL (day)?A3 statute milesB1 statute mileC5 statute miles

Exam Simulator

Take full-length, timed 60-question practice exams — the same question count as the real IRA test

Learn more

Know What to Expect on Test Day

Official NameInstrument Rating — Airplane (IRA) Knowledge Test
Test CodeIRA
Questions60 multiple-choice (select one from three options)
Time Limit150 minutes (2.5 hours)
Passing Score70% (42 correct out of 60)
CalculatorProvided (or approved personal calculator)
Reference MaterialsFAA-approved test supplement provided (includes approach plates, weather charts, navigation charts)
Retake PolicyNo mandatory waiting period — requires additional training and a new instructor endorsement (14 CFR 61.49)
Test Validity24 calendar months (2 years) per 14 CFR 61.39

The IFR knowledge test is administered at the same FAA-authorized testing centers as the PPL exam (PSI). You'll need an instrument ground instructor or CFII endorsement to schedule. The test supplement includes real approach plates and weather charts — practicing with these materials is essential for exam success.

Study Tip: The IFR exam includes questions that require reading and interpreting approach plates, weather depictions, and instrument charts from the provided test supplement. AviaSkill's practice questions include the same types of chart-based and scenario-based questions you'll see on the real exam.

Your Path to the Instrument Rating

Before the knowledge test

  • Hold a Private Pilot Certificate, or apply for one at the same time as the rating (14 CFR 61.65(a)(1))
  • An endorsement from a CFII or instrument ground instructor (14 CFR 61.65(a)(4))

Before the checkride

  • 50 hours of cross-country PIC time, at least 10 of them in airplanes (14 CFR 61.65(d)(1))
  • 40 hours of actual or simulated instrument time, including 15 hours with an instrument instructor and a 250 NM IFR cross-country (14 CFR 61.65(d)(2))
1

Earn Your Private Pilot Certificate

Complete PPL training and pass both the knowledge test and checkride. Already have your PPL? You're ready for step 2.

2

Begin Instrument Training

Find a CFII (Certificated Flight Instructor — Instrument) and start logging instrument time. The checkride requires 40 hours of actual or simulated instrument time, 15 of them with an instrument instructor (14 CFR 61.65(d)).

3

Complete Instrument Ground School

Study instrument procedures, navigation systems, weather theory, and IFR regulations. AviaSkill accelerates this preparation with AI-powered practice.

4

Pass the Knowledge Test

Take the FAA Instrument Rating Knowledge Test at a testing center. 60 questions, 150 minutes, 70% to pass. You need an instructor endorsement to sit it (14 CFR 61.65(a)).

AviaSkill Helps Here
5

Pass the Instrument Checkride

Demonstrate instrument flight proficiency to a DPE — including approaches, holding patterns, unusual attitudes, and emergency procedures.

6

Earn Your Instrument Rating

You're now qualified to fly in instrument meteorological conditions. A critical step toward professional aviation careers.

Start Preparing for Step 4

Continue Your Aviation Journey

The Instrument Rating opens doors to advanced certifications and professional aviation.

Commercial Pilot (CPL)

Get paid to fly. Requires a PPL and 250 hours total time. Without an instrument rating, no passengers for hire beyond 50 NM or at night (14 CFR 61.133).

Study Now

Flight Instructor (CFI)

Teach others to fly and build flight hours. Many pilots earn their CFI while working toward ATP minimums.

Coming soon

CFII (Instrument Instructor)

Teach instrument flying. Requires CFI certificate plus additional instrument training.

Coming soon

ATP & Beyond

Airline Transport Pilot — the highest level of pilot certification. Required for airline operations.

Coming soon

The Instrument Rating is considered the most valuable single rating a pilot can add after the PPL. It's required for most professional aviation careers, improves safety in all weather conditions, and without it a Commercial Pilot Certificate (airplane category) is limited to carrying passengers for hire within 50 NM and by day (14 CFR 61.133(b)).

Tools pilots actually use

Crosswind, METAR, weight & balance — always free, no sign-up needed.

Crosswind Calculator

Calculate crosswind & headwind components for any runway

Try

METAR/TAF Decoder

Decode weather reports into plain English instantly

Try

Unit Converter

Convert between all aviation units pilots need

Try

Weight & Balance

Calculate W&B with CG envelope visualization

Try

Density Altitude

Calculate density altitude & performance impact

Try

Wind Triangle

Solve true heading, ground speed & wind correction

Try

Fuel Planner

Plan fuel burn, endurance & required reserves

Try

Holding Entry

Determine the correct holding-pattern entry

Try

Time Calculator

Convert local/Zulu time and compute ETAs

Try

V-Speed Reference

Look up key V-speeds for common trainers

Try

Takeoff & Landing

Estimate takeoff & landing distances

Try

Ready to Pass Your Instrument Rating Written Exam?

Master instrument procedures, navigation systems, and weather theory with AI-powered study tools. All 8 ACS areas covered. 7-day free trial — no credit card required.

Start Your Free TrialView Pricing