faa.gov

Ego7W TIL 7.5 percent of each US domestic airline ticket price goes to federal tax
yVloM TIL that piston-engined aircraft still add lead to their fuel. In a deliberate attempt at lessening the perceived impact, high lead is called "low leaded fuel," and leaded fuel is called "very low leaded fuel" despite there being no safe upper limit for lead additives in fuel
OGanX TIL that shining lasers at aircraft is a criminal offense and can impose civil penalties of up to $11,000 per violation.