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Old 7th Dec 2018, 01:14
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pineteam
 
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The old birds use the FAC to determine the characteristics speeds and the MCDU to compute the VAPP. On the newer models, all the speed displayed are from the data inserted in the MCDU. And the FAC are only there as a back up. In case of major discrepancy, a « CHECK GW » message will be triggered after airbone.

Last edited by pineteam; 7th Dec 2018 at 05:11. Reason: Typo
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