A reliable indicator of the air quality in offices, classrooms, or living rooms is the CO2 content. In fresh air, the concentration of carbon dioxide is around 400 ppm. This stands for “parts per ...
FLYING Magazine on MSN
Garmin’s Autoland Passes First Real-World Test
Beechcraft King Air B200 activated its emergency Autoland system in what Garmin said was the technology’s first real-world ...
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