By Joey Roulette WASHINGTON (Reuters) -Transportation safety officials on Friday said they believe the crew of an Army Black ...

Many different factors affect the density of air. Most measurably, as altitude increases, air becomes less dense, decreasing atmospheric pressure. Standard altitude-pressure tables allow ...

Atmospheric pressure at sea level is about 101,000 Pa (101 kPa) but just 27,000 Pa (27 kPa) at the cruising altitude of a passenger plane. Air pressure is due to the weight of air in the ...

Preliminary analysis of voice recordings and other black box data recovered from the crash site showed the helicopter pilot ...

Preliminary analysis of voice recordings and other black box data recovered from the crash site showed the helicopter pilot and her instructor read aloud conflicting altitudes before the collision ...