pacificap Posted November 27, 2017 Report Share Posted November 27, 2017 (edited) Once I reach my top of descent I select a lower altitude on the AP window but VNAV disconnects by itself. FMC says CHECK ALTITUDE TARGET Am I doing something wrong? Edited November 27, 2017 by pacificap Quote Link to comment Share on other sites More sharing options...
mmerelles Posted November 27, 2017 Report Share Posted November 27, 2017 You need to set the lower altidude before reaching T/D, the aircraft will start descending automatically at T/D Quote Link to comment Share on other sites More sharing options...
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