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Doesn the area operable under ETOPS rules depend on speed as well as time?

April 26, 2017area depend etops operable rules speed time

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Doesn the area operable under ETOPS rules depend on speed as well as time?

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Yes. The areas displayed are based on a speed of 389 kts at the specified rule-time. This value was used in several early papers on ETOPS and is appropriate for a Boeing 757, though values for other large twins should be similar.