How Hot Is Too Hot Aboard An Airliner? The Law Doesn’t Say

DENVER (AP) — Every day, tens of thousands of U.S. airline passengers settle into their seats, lower the window shades and reach up to twist the air vents without the benefit of something that might do even more to keep them cool: a rule setting temperature limits inside the cabin.
Airlines have their own guidelines — some allowing the mercury to hit 90 degrees Fahrenheit (32 Celsius) — and federal regulations cover air flow and, more generally, passenger safety and comfort.
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