ARTICLES

US Air was initially known as All-American Airways in 1939, then morphed into Allegheny Airlines, after which it became US Air. As of 2015, following several mergers, its name is US Airways.

www.reference.com/article/air-853f969edc445d79

The air handler is the indoor part of the HVAC unit that contains a blower and coils for heating and cooling. In a HVAC system that uses a fossil fuel, the air handler contains the heat exchanger, which is a firebox that...

www.reference.com/article/air-handler-air-conditioner-82b57af9adf2f978

Air is a gaseous substance that is composed primarily of nitrogen, oxygen and argon. The air in the atmosphere that surrounds the Earth is approximately 78 percent nitrogen, 21 percent oxygen and 1 percent argon, with th...

www.reference.com/science/composition-air-42998c6c3c844b66

SIMILAR ARTICLES

Allegheny Airlines was an airline that operated out of Pittsburgh, Pennsylvania, and was headquartered at Washington National Airport in Arlington County, Virginia, from 1952 to 1979. It is the predecessor of what is now...

www.reference.com/article/allegheny-airlines-ca5450f034e4f4f0

As of 2015, customers can book flights on Lion Air through either the airline's website, third-party travel and ticket booking websites, or through the official Lion Air application on smartphones. Prospective Lion Air f...

www.reference.com/article/book-lion-air-flight-d8258324e2d4c111

The Smithsonian museum complex in Washington includes several interesting museums with free admission, such as the Air and Space Museum, the Natural History Museum and the American Indian Museum. Travel.NationalGeographi...

www.reference.com/article/good-museums-admission-def4fd827905244a

Smithsonian Museum tours include the Air and Space Museum, Natural History Museum, American History Museum and the National Gallery of Art Museum. The Smithsonian also offers outdoor walking tours of public places and pr...

www.reference.com/article/smithsonian-museum-tours-128fcfbfd07c5f3c