Use of VNAV and TOD

[dipperdolphin]

Hey,

Can I use vnav with the custom fmc? If so, when do I arm it and how do I use it? Scroll alt down and click VNAV, or a different method?

Thanks

[JF John]

@dipperdolphin Hello,
VNAV can be engaged at/above 400ft AGL by pressing the VNAV mode selector. Yes you're correct. The MCP altitude will effectively over-ride a VNAV descent until you move it to a lower altitude. The MCP altitude is often set to the first altitude restriction on the STAR at this point.