Rising temperatures could keep more flights from taking off on time

Extreme heat can disrupt flights even when skies are clear, because hotter air is thinner. That can reduce aircraft lift and engine thrust, forcing airlines to lighten loads by removing passengers or cargo or carrying less fuel, especially on the hottest days. The issue is familiar at desert-climate airports, but researchers say climate change could make similar problems more common elsewhere, including higher-elevation airports or those with shorter runways. The AP reports American Airlines offered compensation to customers who voluntarily gave up seats on a July 24 flight from Harry Reid International Airport after temperatures hit 114°F (47°C). Pilots and airlines assess takeoff safety using weight, airport elevation, and temperature, with runway length also affecting how much speed and distance are available.