The CFI initial is the longest, hardest oral in general aviation. Eight hours is normal. Twelve isn't unusual. The examiner isn't just checking whether you know the material — they're checking whether you can teach it, cite it, and defend it under pressure. That's why memorizing answers doesn't work here. You need to understand the why behind every regulation, maneuver, and aerodynamic principle.
This page is a working list of the questions DPEs ask most often on the Flight Instructor — Airplane ACS, grouped by the areas of operation where applicants get busted. Every question is paired with the FAR or AIM cite the examiner expects to hear, plus the teaching pitfall that turns a passing answer into a pink slip.
How the CFI Oral Is Actually Structured
Unlike a private or commercial oral, the CFI checkride starts with the Fundamentals of Instruction (FOI) — learning theory, the teaching process, human behavior, and effective assessment. If you can't articulate the levels of learning or the law of primary, you won't get to the airplane systems questions.
After FOI, the DPE moves into technical subjects, regulations, and lesson-plan presentations. You'll be asked to teach at least two maneuvers from a lesson plan you prepared in advance. Expect the examiner to play a stumped student and force you to re-explain from a different angle.
The Four Buckets DPEs Draw From
- Fundamentals of Instruction — learning theory, teaching methods, assessment, professionalism
- Technical Subject Areas — aeromedical, runway incursion avoidance, weather, systems, aerodynamics
- Regulations & Endorsements — FAR 61.183, 61.185, 61.187, 61.189, 61.195
- Lesson Plan Presentation — teaching maneuvers on the ground with whiteboard, models, and Socratic questions
Fundamentals of Instruction Questions
This is where roughly 30% of CFI initial failures happen, per FAA testing statistics. Applicants over-prepare on aerodynamics and under-prepare on FOI.
- What are the laws of learning, and give a flight-training example of each? (Readiness, Exercise, Effect, Primary, Intensity, Recency)
- Describe the levels of learning. (Rote, Understanding, Application, Correlation) — you should be teaching to correlation, not rote.
- What are the domains of learning? (Cognitive, Affective, Psychomotor) and how do you assess each?
- Explain the teaching process. (Preparation, Presentation, Application, Assessment)
- What are Maslow's hierarchy of needs, and how does it affect a nervous primary student on a hot day?
- What defense mechanisms do students use, and how do you recognize them? (Rationalization, projection, denial, compensation, displacement, repression, flight, aggression, resignation)
- What's the difference between formal and informal assessment?
- Give me an example of a good learning objective. (Should include conditions, behavior, and standards.)
The FOI Trap
DPEs love asking you to demonstrate a teaching method rather than just name it. "Show me how you'd use the demonstration-performance method to teach a slow flight entry." If you can only recite definitions, you'll stall out.
Regulations: The Endorsement Minefield
The CFI applicant must know who can endorse what, and the exact regulatory basis for every endorsement. Get these cold.
| Endorsement | Governing FAR | Common Mistake |
|---|---|---|
| Solo flight | FAR 61.87 | Forgetting the 90-day currency requirement |
| Solo cross-country | FAR 61.93 | Missing the per-flight endorsement in addition to the general one |
| Practical test recommendation | FAR 61.39 | Not verifying knowledge test results first |
| Flight review | FAR 61.56 | 1 hour ground + 1 hour flight, not "about an hour" |
| Complex/High-performance | FAR 61.31 | Confusing which airplane counts as which |
Regulations Questions You Will Be Asked
- What are the eligibility requirements to become a CFI? Cite FAR 61.183 — 18 years old, read/speak/write English, hold a commercial or ATP with instrument rating, pass FOI and CFI knowledge tests, receive required training and endorsements.
- What are the aeronautical knowledge areas required for a CFI applicant? FAR 61.185.
- What flight proficiency is required? FAR 61.187 — including spin training with logbook endorsement.
- What are the limitations of a flight instructor? FAR 61.195. Know the 8-hour flight instruction limit in any 24-hour period, the endorsement requirements for solo, and the requirement to hold a category/class rating in the aircraft.
- What records must a CFI keep, and for how long? FAR 61.189 — endorsement records for at least 3 years.
- When can you log flight time as PIC while giving instruction? FAR 61.51(e)(3) — an authorized instructor may log PIC time while giving instruction.
- What's required for a currency flight review? FAR 61.56.
- When must a student pilot receive a solo endorsement, and how often is it renewed? Every 90 days per FAR 61.87.
Aerodynamics Questions — Teach, Don't Recite
Expect the DPE to hand you a whiteboard marker and say: "Teach me lift." If your answer is "Bernoulli plus Newton," you failed the moment you started.
- Explain the four forces in unaccelerated flight and how they change during a climb.
- Draw and explain the lift equation. L = ½ρV²SC_L — teach what happens to each variable in ground effect, at altitude, at different weights.
- What is angle of attack, and why does a stall occur at the same AoA regardless of airspeed?
- Explain adverse yaw, and how the rudder counteracts it.
- What is a load factor, and how does it change in a 60° bank level turn? (2 Gs)
- What causes left-turning tendencies? Torque, spiraling slipstream, gyroscopic precession, P-factor — you must be able to explain when each is dominant.
- Explain the region of reversed command. Why is it relevant to short-field landings?
- What is a spin, and what are the four phases? (Entry, incipient, developed, recovery)
- Teach ground effect using a whiteboard. Include reduced induced drag and the geometry (within one wingspan of the surface).
The Aerodynamics Failure Pattern
Applicants who fail aerodynamics almost always fail because they can define a term but can't answer the follow-up: "So what does that mean for my student on their first solo?" Every technical answer needs a teaching bridge to a real cockpit scenario.
Systems, Weather, and Aeromedical
- Explain the fuel system in your training airplane, including what happens when the fuel selector is on BOTH.
- How does a magneto work, and why do we check both individually during runup?
- What causes carburetor icing, and in what temperature/humidity range is it most likely? (20°F to 70°F, high humidity)
- Explain hypoxia — types, symptoms, and the regulatory requirements for supplemental oxygen. FAR 91.211.
- What is spatial disorientation, and how do you prevent it in a student?
- Explain the different types of fog and their formation.
- Read and interpret this METAR/TAF. (DPEs will hand you a real one.)
- What are the VFR weather minimums for Class B, C, D, E, and G? Know the 3-152 and 1-152 rules cold.
Lesson Plan Presentation
You'll walk in with lesson plans for every maneuver in the Airplane ACS. The DPE will pick two or three at random. A complete lesson plan includes:
- Objective (behavior + conditions + standards)
- Elements
- Schedule
- Equipment
- Instructor actions
- Student actions
- Completion standards
- Common errors
Maneuvers Most Often Selected
- Steep Turns — bank angle, load factor, coordination, common errors
- Slow Flight — the region of reversed command, why we teach it
- Power-Off Stalls — recovery procedure, what to look for as an instructor
- Chandelles — the constant pitch/varying bank phase transitions
- Lazy Eights — the four reference points and airspeed/altitude targets
- Short-Field Takeoff and Landing — obstacle clearance, energy management
- Emergency Approach and Landing — decision-making, ABCDE checklist
How GroundScholar Helps With This
GroundScholar's AI examiner runs a full CFI initial oral simulation — including the FOI segment most applicants underprepare for. It adapts to your answers the way a real DPE does: if you cite FAR 61.195 but can't articulate the 8-hour limitation, it drills that gap until you own it. Every regulatory reference is verified against the live FAR/AIM, so you're not memorizing outdated numbers from a 2019 study guide.
After each session you get a pass-prediction score by ACS area of operation, so you know whether your weak spot is aerodynamics, endorsements, or lesson-plan structure. Applicants use it in the two weeks before the checkride to run mock orals daily, then walk in knowing they've already answered every question the DPE will ask.
Your Next Step
The CFI initial rewards depth. A student pilot who can recite definitions gets a private certificate. A CFI applicant has to teach those definitions to a confused primary student while citing the reg cold. Start drilling now, at CFI depth, on the exact question set DPEs draw from.