Why are US airlines still flying 30-year-old jets? Rigorous maintenance and smart economics keep them safely soaring decades later.
From the TriStar Stargazer to Buffalo’s Electras and Australia’s Connie — meet the oldest Lockheed commercial aircraft still flying today.
Airplanes cruise at altitudes of several thousand feet above the ground for most parts of their journeys. If the sole purpose were to avoid buildings, airplanes wouldn't need to fly above 3,000 feet — ...
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