Mal1 0 Posted May 24, 2020 Share Posted May 24, 2020 Hello guys, just an short question: I fly my 737-800ZIBO from "cold and dark". During programming the FMC I type in the IAS/MACH in the MCP and turn ON F/D and A/T. Then I want to preselevt the LNAV and VNAV. Abd there's my problem: Why are these buttons without function? After Takeoff they work. Thanks for your answers. Mal1 Link to comment Share on other sites More sharing options...
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