• JRaccoon@discuss.tchncs.de
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    1 day ago

    There are minimum airspeeds the aircraft must reach before the flaps can be safely retracted. I don’t know the exact numbers, but assuming a standard flaps 5 takeoff for B787, retraction to flaps 1 would occur around 1000 ft by earliest, that’s typically 20 to 30 seconds after the takeoff.

    • kcuf2@lemmynsfw.com
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      2 hours ago

      Also gear should probably be retracted first (though I don’t actually know for certain for this aircraft)

      • JRaccoon@discuss.tchncs.de
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        2 hours ago

        Usually the gear is retracted almost immediately after takeoff, as it creates a huge amount of unnecessary drag if left out when not needed.

        • kcuf2@lemmynsfw.com
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          2 hours ago

          Ya that’s true for multiengine in general. I just didn’t know if there was any other sequencing needed for the 787 (like move flaps from 5 to 4) because I know nothing about flying such large planes.