There are several theories, but the one that makes the most sense to me is that the lead in avgas helps sealing and improves thermal heat transfer.
Opinion
Your flight has been delayed
The time-worn expression about GA travel is true. If you’ve got time to spare, go by air. Of course, there is an addendum I would add to that expression that has proven true for me. If you want to broaden your experience, meet fascinating people, and truly enrich your life, fly.
Human Factors: Whose fault, really?
When a mechanic’s error leads to an accident, does the pilot and aircraft owner share some of the responsibility?
Questions from the Cockpit: Where’s the other end of the tape measure?
Where is AGL measured from? As with most things in life — and aviation — it depends.
The Douglas Dolphin
The Douglas Dolphin, launched at the beginning of the Great Depression, was a niche machine that would serve airlines, business leaders and, ultimately, the military.
The physics we cannot see
There have been many times while in flight when I have looked out to my wings with the knowledge that air flowing over that carefully shaped structure allows for pressures to hold me aloft. The power of lift is undeniable. Yet it is invisible.
The Stinson trimotor
The Stinson Aircraft Company carved its own niche in the market by selling its trimotors at low prices to airlines in the 1930s.
Big Sky perspective
Every day since Sept. 17, 2022, at 20,000 airports during nearly 55,000 flight hours, no collision has occurred. Were there a few close calls? I’d guess yes. And yet, no collision.
Human Factors: No one in command
It wouldn’t be until after the crash that either one of them would have any clue that no one was flying the plane.