Adaptive, not linear
Mastery over minutes watched
A Bayesian mastery model tracks what you actually know per objective, decays it over time, and schedules review — so completion means readiness.
Adaptive · AI-native · Mastery-based
An adaptive course with a grounded AI ground instructor, unlimited practice exams, and progress that measures real mastery — not just videos watched.
No card required — free forever, not a trial.
275 core lesson-aligned questions shown above · 872 total across the full practice bank, including 597 supplemental questions — see all practice questions.
Adaptive, not linear
A Bayesian mastery model tracks what you actually know per objective, decays it over time, and schedules review — so completion means readiness.
Grounded AI instructor
The AI tutor answers only from approved study material with citations. It refuses real-time operational and medical questions instead of guessing.
Honest by design
Every claim traces to a source. Nothing safety-critical publishes without human CFI review. Certificates are cryptographically verifiable.
From Airspace and Operating Requirements — one of 22 modules you can start right now. Browse the full curriculum →
6 min
Controlled airspace is Classes A–E; uncontrolled airspace is Class G. VFR private pilots mostly operate in E and G and transit B/C/D near busy airports.
draft7 min
D = be heard; C = be heard and seen (transponder + ADS-B); B = be heard, seen, and explicitly cleared.
draft6 min
Class B: 3 SM, clear of clouds. Class C/D/E <10,000: 3 SM + 500/1,000/2,000. Class G day low: 1 SM, clear of clouds. Special VFR (by ATC clearance) allows clear-of-clouds and 1 SM in a controlled surface area; at night it requires an instrument-rated pilot and instrument-equipped aircraft.
draft6 min
Know prohibited/restricted/warning/MOA/alert areas. Speed: 250 kt below 10,000 MSL; 200 kt under a Class B shelf and in the C/D speed zone.
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