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A comment on I Just Took the World's First 20-Hour Flight. Parent comment

Re:I Just Took the World's First 20-Hour Flight by HatchedLake721 on Sunday October 20, 2019 @12:23PM (#21305095)
What’s the connection between flight duration and number of engines?
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Re:I Just Took the World's First 20-Hour Flight by slededit on Sunday October 20, 2019 @12:27PM (#21305123)
Reliability (ETOPS regulations), as well as the fact long hauls are usually fewer larger flights meaning they use larger aircraft.
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Re:I Just Took the World's First 20-Hour Flight by Arnt on Sunday October 20, 2019 @02:23PM (#21305992)
Twin-engine aircraft have only one working engine if one fails, and there are rules regarding how far they can be from the nearest suitable airport in that case.

In practice that means that each type of twin-engine aircraft has a limit: Can only be that far from shore. For aircraft with more reliable engines the limit is higher, so they don't have to pick island-hopping routes when crossing oceans.

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