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The whole ground school is free and always has been — every course page, the glossary, the quiz bank, the flashcards, the logbook and the planner. No account, no sign-up, no trial. Your progress saves in this browser.
Follow a plan →
A 30-day PPL study plan. Each day gives you a lesson to read, the flashcards that go with it, and a quiz filtered to that topic — so you are never deciding what to study next.
Guided studyTrack the ACS →
Rate yourself against every published Task in your certificate's ACS. See which Areas you have not looked at, and jump from anything you mark weak straight to the page that covers it.
Know where you standWhat's Here
Knowledge Test Prep
Aerodynamics, systems, regulations, weather, navigation — the actual content the FAA tests, organized by certification track.
Oral Exam Reference
Topics structured the way DPEs ask them. Settling with power, dynamic rollover, retreating blade stall, ICEFLAGGS, SHARPTT — all here.
Hour Calculator
Enter your logged time. See exactly how many hours you have left for PPL, IFR, CPL, CFI, CFII, or cross-category airplane add-ons.
Built by a Working Pilot
Notes from active CFII training, not regurgitated handbook content. Includes the cross-references and gotchas that show up on the test.
Certification Tracks
Pick where you are. Each track contains structured topic pages — not just an outline, the actual content.
Private Pilot (PPL)
8 topic pages — systems, aerodynamics, controls, maneuvers, navigation, weather, emergencies, checkride
Instrument Rating (IFR)
8 topic pages — scan, aeromedical, holding, emergencies, approaches, clearances, arrivals, instruments
Commercial Pilot (CPL)
6 topic pages — regulations, hazards, night, mountain, ADM/CRM, weather (commercial depth)
Flight Instructor (CFI)
6 topic pages — FOI, lesson planning, instructor responsibilities, endorsements, risk management/SBT, maneuvers teaching
Part 107 sUAS
5 topic pages — drone certification covering AC 107-2A in full
Latest from the Blog
New writeups from the cockpit. Concepts that don't fit cleanly into a course outline.
All posts →Tools & References
Logbook Calculator →
Computes remaining hours for 7 certificates including cross-category airplane add-ons from helicopter time.
Progress Dashboard →
Visual progress bars across all certification minimums, populated from your logbook entries.
Search →
Site-wide search across all course pages, glossary terms, mnemonics, and quiz topics with filters by track and type.
Glossary →
170+ aviation terms A–Z with definitions and links into the relevant course pages. Live filter search included.
Flashcards →
105 flip-card terms across 9 decks. Mobile-friendly, progress saved locally, "got it / need review / skip" workflow.
Knowledge Test Quiz →
176 FAA-format questions covering PPL, IFR, CPL, and Part 107. Filterable by topic, progress auto-saved.
Topics Index →
Cross-cutting concept index, 24 mnemonic flashcards, and FAQs for the most-asked checkride questions.