should FD follow FMC flight patch in cmd LNAV / VNAV off

[Jetman67 517]

Hello I was under the impression I could fly the FMC flight plan by following the FD bars, example I was practicing a SID departure and wanted to fly it manually so at around 400 feet I enabled the autopilot expecting the FD to give me guidance to follow the Magenta path for the SID but it did not give me an lateral guidance, do I have this understanding wrong, thanks

[kjjj11223344 48]

Hello I was under the impression I could fly the FMC flight plan by following the FD bars, example I was practicing a SID departure and wanted to fly it manually so at around 400 feet I enabled the autopilot expecting the FD to give me guidance to follow the Magenta path for the SID but it did not give me an lateral guidance, do I have this understanding wrong, thanks

You should be able to. I have flown all of my SIDS manually since I got the Ngx, by following the flight director bars in lnav and vnav.Edit:I don't want to state the obvious, but do you have lnav as the active roll mode?

[flyguycaa 0]

Think of the FD bars as what the auto pilot would be doing, if it was engaged. You have to be in a lateral mode to get the vertical bar, and you must be in a vertical mode to get the horizontal bar. If you have not engaged any of the lateral or vertical modes then the FD will not provide correct guidance.

[Jetman67 517]

understood sorry I was just interpreting this function incorrectly Wayne

[royski 0]

Hello I was under the impression I could fly the FMC flight plan by following the FD bars, example I was practicing a SID departure and wanted to fly it manually so at around 400 feet I enabled the autopilot expecting the FD to give me guidance to follow the Magenta path for the SID but it did not give me an lateral guidance, do I have this understanding wrong, thanks

FD is the "brain", AP/AT is the "muscle." Assuming that you programmed your FMC correctly and according to your SID chart, you should be able to hand-fly the procedure as long as you like.