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Title
Large 4 engine jet in blue sky with white contrails #304608440
Description
Four engine jet flying through blue winter sky leaving contrails. Four-engine passenger jetliner types are Boeing 747, Airbus A380, and Airbus A340. The atmospheric conditions required for the formation of contrails are extreme cold temperatures and low to moderate humidity mixing with hot exhaust gasses. At altitudes at or above 35,000 feet and at temperatures below -58°F nearly instantly condenses the water vapor into ice crystals, forming clouds.