I just did my CFI 1.5 weeks ago. I did my commercial over 20 years ago. My advice is to purchase the ASA Oral Exam Guide and know that. Everything on the oral is there. The CFI is 80% oral, 20% flying. The DPE should tell you what to teach him for the actual checkride.
When doing lessons for the CFI, try to get as much experience teaching your own lesson, especially commercial maneuvers since they’re fresh to you.
Personally, I wouldn’t spend much time creating lesson plans. There are a lot of these on the internet already made. I would focus knowing your FOI’s, scenario based training, and that oral guide. The oral guide covered everything in my oral.
You’re going to need the following books:
Pilots Handbook of Aeronautical Knowledge (PHAK)
Airplane Flying Handbook (AFH)
Aviation Instructors Handbook (for your FOI)
Current paper FAR/AIM. Easier to reference.
Tab your AFH and PHAK. This makes it much easier to reference it in the oral. It also showed you’re prepared. I made myself a notebook that it took to the oral. You can look up and reference info in the oral but make sure you have a good understanding of it.
You have to take the FOI and CFI Airplane written exams. When you take your CFI Airplane, also request to take the Ground Instructor exam. It’s the same exam as the CFI-A. You can then take your CFI-G and FOI written exams to the FAA and get a Ground Instructor Certificate. This also applies for the CFII and Instrument Ground Instructor certificate.
Good luck. It’s a lot of ground work and lots of studying.
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