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Robi77

Drag required

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When approaching an airport with the PMDG-747-400 I sometimes get the FMC message: " Drag required "What does this mean and what actions to be taken ?Thanks for helpHubert Werni

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When approaching an airport with the PMDG-747-400 I sometimes get the FMC message: " Drag required "What does this mean and what actions to be taken ?
It means you are too high/fast compared to the descent profile the FMS has calculated. Time to put out the spoilers to add drag.

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And to add to that, it usually happens because you don't have wind data entered into the FMC.

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