If you're working toward your initial flight instructor certificate, there's one requirement that trips up more candidates than almost anything else on the checkride — not because it's obscure, but because it's widely misunderstood. Here's what the regulation actually says, where CFI candidates most often get it wrong, and why the aircraft you train in matters more than most people realize.
What FAR 61.183(i) Actually Says
Every applicant for an initial flight instructor certificate in the airplane or glider category must:
Receive flight training in stall awareness, spin entry, spins, and spin recovery procedures, in an aircraft certificated for spins, and
Receive a logbook endorsement from an authorized instructor certifying that you're competent and possess instructional proficiency in those areas — not just that you personally can recover from a spin, but that you can teach someone else to.
That second part is where most candidates underestimate the requirement. This isn't a "have you done a spin" checkbox. The FAA wants to know you can narrate what's happening aerodynamically, coach a student through it, and explain recovery procedure out loud while it's happening — because that's exactly what you'll be doing as a working CFI teaching stall and spin awareness to your own students someday.
The Mistake That Invalidates the Whole Endorsement
Here's the detail that catches candidates off guard: the training has to happen in an aircraft actually certificated for spins — not just "incipient spin" certified, which is the limit for common trainers like the Cessna 172. If your spin endorsement was signed after training in an airplane that isn't certificated for full spins, the endorsement doesn't satisfy the regulation, regardless of what the logbook entry says. AC 61-67C, Stall and Spin Awareness Training, is the FAA's load-bearing guidance here, and it's explicit on this point.
This is a genuinely common problem. A lot of CFI candidates train primarily in trainer aircraft that were never built for full spin recovery, then discover at their checkride — or worse, after — that the training doesn't count.
The Good News: It's a One-Time Requirement
Once you've completed the training and hold your initial CFI certificate in the airplane or glider category, you never need this endorsement again. It's not required for a CFII add-on, an MEI, or any subsequent instructor rating. It doesn't expire. Get it right once, correctly, and it's done for the rest of your career.
The exception: if you fail your initial CFI checkride specifically for deficiencies in stall or spin instructional proficiency, your retest must include an actual in-flight spin demonstration — you don't get to just retake the oral portion. Getting it right the first time isn't just cleaner, it's cheaper.
What Good Training Actually Looks Like
Beyond the regulatory minimum, solid CFI spin training covers:
The aerodynamics of a spin — not just how to recover, but why an aircraft spins in the first place, in language you can teach to someone else
Stall awareness and recognition, taught from an instructional perspective — spotting the onset before a student does
Spin entry and full recovery, using standard recovery procedure (power idle, ailerons neutral, opposite rudder, elevator forward) until rotation stops
Narrating while flying — the actual skill being tested is your ability to talk a student through what's happening, which is a different muscle than just performing the maneuver solo
Training with WETSU Aviation
Initial CFI spin training happens in our Super Decathlon, N2JG — an aircraft genuinely certificated for full spins, not just incipient recovery, which is exactly the detail that invalidates so many candidates' endorsements elsewhere. Training here means the aircraft itself is never the problem.
Scott trained aerobatics directly under Patty Wagstaff and has built a 100% first-time checkride pass rate teaching exactly this kind of instructional proficiency — not just performing maneuvers, but teaching candidates how to teach them. If you're finishing your CFI and need this endorsement done right the first time, apply here and let us know where you are in the process.