FAR 91.155 sets VFR visibility and cloud clearance minimums that vary by airspace class, altitude, and time of day - understand every combination here.
FAR 91.113 establishes a priority hierarchy based on maneuverability - understanding the logic behind it makes every conflict scenario easier to apply in the cockpit.
Class D airspace requires two-way radio contact before entry, but it only exists when the tower is open - here's what replaces it when the controller goes home.
A radio communications gap between Marine One and DCA controllers was traced to antenna shadow geometry - a physics problem that applies to every VHF-equipped aircraft.
Radio Hangar explores FAR Ninety-One One Fifty-Five, Basic VFR Weather Minimums, and the Three-Statute-Miles, Five-Hundred-Below, One-Thousand-Above, Two-Thousand-Horizontal Rule That Keeps You Out of the Cloud You Swore You Could Skirt.
Radio Hangar explores FAR Ninety-One One Seventeen, the Speed Limits, and Why Two Hundred and Fifty Knots Below Ten Thousand Is the Rule Almost Nobody Explains to a Student Pilot.
FAR 91.155 sets different VFR weather minimums for each airspace class - knowing the logic behind each number makes the table far easier to apply in actual flight.