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Jetman67

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

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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


Wayne such

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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?

Boeing777_Banner_Pilot.jpgsig_TheBusIveBeenWaitingFor.jpg

Alfredo Terrero

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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.


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john croft

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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.

Roy Joven T. Benzonan

AS136 - AirSource Virtual Pilot Union

 

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Aircrafts: PMDG NGX/747-8i, LDS 767, CS C130

 

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