Pressure altitude is used to determine your aircraft’s performance in non-standard conditions, which are any time the barometric pressure is anything other than 29.92 Hg at sea level.

He calculates altitude based on pressure. The main parts are an Arduino Pro Mini clone, a BMP180 sensor and a Nokia 5110 LCD module. A standard 9V battery supplies juice to the device.

You may have heard a flight attendant talk about the safety procedures to follow if the cabin loses pressure, but what does ...

The SR-71 Blackbird flies at extremely high speeds and altitudes, adding Aluminum to its tires can help to prevent damage ...

But the tire pressure warning light doesn’t even come on until your pressure drops by around 10%. So, in your case, you’d have to lose more than 3 psi to get even a warning from the system.

Pressure cooking will still save time, energy and money, but here’s the high-altitude rule: For every 1,000 feet above 2,000-foot elevation, you must increase cooking time by 5 percent.