FAA Knowledge Test Study Guides

Free, sourced explainers tied to the Airman Certification Standards and 14 CFR. Each one links to practice test questions on the same topic.

• FAA Airman Certification Standards (ACS) explained: areas, tasks and element codes
  How the FAA Airman Certification Standards are organized, how to read a code like PA.I.B.K1 or UA.II.A.K3, and how to use the ACS to study for the knowledge test.
• Part 107 airspace for remote pilots: classes, ATC authorization and restricted areas
  Which airspace a small drone can enter under 14 CFR Part 107, when you need ATC authorization, and how airports, restricted areas, TFRs and NOTAMs change the plan.
• Part 107 weather and operating limits: sources, minimums and performance effects
  The Part 107 numbers to know (400 ft, 3 SM, cloud clearance, 87 knots), where to get weather, and how density altitude, wind and storms affect a small UAS.
• 14 CFR 91.205 Required VFR and IFR Aircraft Equipment Guide
  Complete guide to 14 CFR 91.205 required aircraft instruments and equipment for Day VFR (A TOMATO FLAMES), Night VFR (FLAPS), and IFR (GRABCARD) FAA exams.
• FAA VFR Weather Minimums and Cloud Clearances Guide (14 CFR 91.155)
  Guide to FAA VFR weather minimums under 14 CFR 91.155 in Class B, C, D, E, and G airspace: flight visibility, cloud distance, and Special VFR rules.
• FAA Knowledge Test: Retakes, Endorsements and How Long a Score Lasts (14 CFR 61.35, 61.39, 61.49)
  What 14 CFR 61.35, 61.39 and 61.49 require before an FAA knowledge test, after a fail, and before the practical test, including the 24-calendar-month score window.
• How to Read a METAR and TAF: A Group-by-Group Decoding Guide for FAA Pilots
  Decode a US METAR and TAF group by group: wind, visibility, weather, sky condition, temperature, altimeter setting, remarks and TAF change groups.
• Density Altitude Explained: How Temperature, Pressure and Humidity Change Aircraft Performance
  What density altitude is, how pressure altitude and temperature combine to make it, why high density altitude reduces power, thrust and lift, and how to plan for it.
• US Airspace Classes A, B, C, D, E and G Explained for VFR Pilots
  What each US airspace class is, where it starts and stops, and what a VFR pilot needs to enter it: clearance, radio, transponder and certificate.
• Weight and Balance for Pilots: Arm, Moment, Datum and a Worked CG Calculation
  How weight and balance works: arm, moment, datum and center of gravity, the two formulas, standard weights, and a full worked loading example from the FAA PHAK.
• How to become a pilot in the USA: the private pilot path from zero
  The US private pilot path step by step: FAA certificates, medical, IACRA, endorsements, solo, and the knowledge and practical tests, for airplanes and helicopters.
• US student pilot paperwork: FAA medical, IACRA, BasicMed, TSA and endorsements
  The FAA certificate application (IACRA), the medical (MedXPress and an AME) and TSA training security are three separate systems. See what each does and what to do first.
• What do US student pilots study? FAA ground school explained
  FAA private pilot ground school covers the aircraft, flight principles, weather, navigation, airports, rules and performance, plus how the testing works.
• Aviation terms, units and conversions for US student pilots
  US pilot abbreviations and units explained: knots, nautical and statute miles, inches of mercury, US gallons, UTC and decimal time, with conversion factors and examples.