Private Pilot Ground Course Lesson 4: Spins
Spins: What They Are, Why They Happen, and How to Prevent Them
In the last lesson we talked about stalls—but what happens if the airplane stalls while the tail isn’t aligned with the direction of travel? That’s when things can get serious, because a stall plus yaw can quickly turn into a spin.
The goal of this article is simple: help you understand why spins are dangerous at low altitude, and how to avoid spinning unintentionally in real life.
What Is a Spin?
According to FAA guidance, a spin is something that can develop from an aggravated stall when there is yaw (or sideslip) acting on the airplane at or beyond the stall. Instead of the airplane simply “mushing” forward and down, it can begin rotating while descending in a corkscrew-like path toward the ground.
Big idea: Spins aren’t random. They require a stall condition plus yaw/sideslip.
The Aggravated Stall (Why It Drops So Fast)
In a normal stall, when the wing exceeds the critical angle of attack, the wing is still making some lift—just not enough to overcome the airplane’s weight. Many training airplanes are designed to stall more gently because of wing twist (washout): the wing root stalls before the wingtip, which helps keep the ailerons more effective a little longer.
But in an aggravated stall, the stall becomes more severe—more of the wing can be fully stalled—and the airplane can feel like it drops “like a sack of potatoes.” That’s why recognizing an impending stall early is such a big deal.
Common Impending Stall Cues
- Stall horn (common in Cessna 172s)
- Stall warning light (seen in many Piper aircraft)
- Wing buffet (common across many airplanes)
Why Stall Recovery Is Taught So Early
Stall recovery is one of the first skills you learn as a new pilot because it teaches you 2 important skills:
(1) Recognize when a stall is approaching and prevent it, and
(2) Recover correctly if it happens.
Where it gets “hairy” is when the airplane is stalled and uncoordinated. In a stall, airflow is already compromised. Add uneven airflow from yaw/sideslip, and control can become much more difficult—especially close to the ground.
“Mishandling the Yaw Axis” (AKA Not Being Coordinated)
“Mishandling the yaw axis” simply means that the airplane’s tail is not aligned with the direction the airplane is traveling. Think of a car: when the back end skids out and the car isn’t pointed where it’s going, it becomes harder to control. Airplanes are similar—good control depends on airflow over the control surfaces being even and predictable.
The Inclinometer (“The Ball”) Tells You the Truth
That’s why your panel has the inclinometer, which most pilots simply call “the ball.” If the ball isn’t centered, the airplane is not coordinated—meaning you’re in some degree of slip or skid.
- Ball centered: coordinated (tail aligned with the flight path)
- Ball off-center: slipping/skidding (increased spin risk if stalled)
This is also why instructors constantly say things like: “Step on the ball.” They’re building a habit so coordination becomes automatic— especially at slow speeds and during stalls.
How Spins Start (And Why Coordination Matters)
A spin develops when a stall occurs with yaw/sideslip acting on the airplane. It’s not only about “bad rudder.” Yaw can also show up if you don’t properly manage adverse yaw from aileron inputs—because rolling the airplane increases drag on the wing with the lowered aileron, which can yaw the airplane.
Practical takeaway: fly as though the rudder pedals are tied to the ailerons (unless you’re intentionally slipping). When you roll, use the rudder as needed to keep the ball centered.
Recovery: Break the Stall First
Here’s the most important point in the whole lesson: if you think the airplane is about to spin, break the stall first—always.
If you quickly reduce angle of attack (and correct yaw), most of the time the airplane won’t fully develop into a spin—especially in many modern training aircraft, which are designed to be more “spin-resistant.”
A Simple Way to Remember the Priority
- 1) Break the stall (reduce angle of attack)
- 2) Then address the spin (if rotation has already developed)
After you break the stall, if the airplane is still spinning, a common general method taught for many trainers is the PARE sequence: Power idle, Ailerons neutral, Rudder opposite (to stop rotation), then Elevator forward as needed to break the stall— followed by a smooth recovery back to level flight.
Important: Every airplane can be different. Always follow the specific spin recovery procedure in the aircraft’s POH/AFM. In the real world, there are no do-overs—do the right thing the first time.
A Common FAA Written “Trick” Question
You may see a question like: “If an airplane spins to the right, which wing or wings have stalled?”
This can feel confusing because spin direction is tied to yaw/rotation, not simply “the right wing stalled.” A solid way to think about it in most training-airplanes is this: during an established spin, both wings are stalled, but one wing is typically producing slightly more lift than the other, which contributes to the autorotation.
Also remember: with wing twist on many trainers, if one wing section is stalled, there’s a strong chance part of the other wing (especially near the root) is stalled too.
Wrap-Up
That’s the core of what you need to know about spins: they’re usually the result of a stall plus yaw/sideslip, and the best prevention is disciplined coordination—keep the ball centered, especially slow and near the stall. If things start going wrong, break the stall first. Although a Spin can be dangerous, it is possible to recover in most situations.
In the next lesson we’ll talk about controllability and what changes as airspeed decreases.