Oil is sometimes referred to as the blood of the aircraft. It provides lubrication, cooling, and carries away waste products. Without it, or without enough of it, the aircraft engine cannot function ...

Kerry McCauley then spent 30 years of his life as an international ferry pilot, flying more than 65 different airplanes and logging around 10,000 hours.

How a small plane’s 16-day trip from Vermont to Florida might foreshadow a new era of battery-powered air travel long considered implausible. Credit... Supported by By Niraj Chokshi Photographs and ...