I'm having trouble with engaging the VNAV. Everything is set in my FMC but the VNAV will not engage.

It can not be activated if you are on the ground and you have to make a turn of more than 5 degrees after takeoff :)

I'll give it a try thanks

It can not be activated if you are on the ground and you have to make a turn of more than 5 degrees after takeoff :)

You are thinking about LNAVCheers,

I'm having trouble with engaging the VNAV. Everything is set in my FMC but the VNAV will not engage.

On ground? In flight? All performance and routes completely entered into the FMS? What MCP are you using?

no still won't engageall routes everything is in the fms. As far as the mcp its the one thats not honeywell the name left my mind

First make sure you activate performance pressing EXEC on the PERF INIT page [ACT PERF INIT should be the page title] Secondly you need 2 FD's on to arm on the ground. Third read the tutorial...There is always something even experienced users might pick up.

not working still but i'll go through the tutuorial

I set everything up but I get a warning sound. I can't find what I'm missing. None the less, I fly with the sound engaged and it turns off right after takeoff.

Vnav !! Inhibited below 400 ft RA or if performance initialization not complete. Boeing FCOM.

Vnav !! Inhibited below 400 ft RA or if performance initialization not complete. Boeing FCOM.

Yes but you should still be able to select VNAV on the MCP on the ground and VNAV should appear in white (ARMED) on your FMA. If you have the Collins MCP selected.Once above 400 ft AGL it should become ACTIVE (green on the FMA).

Yes but you should still be able to select VNAV on the MCP on the ground and VNAV should appear in white (ARMED) on your FMA. If you have the Collins MCP selected.Once above 400 ft AGL it should become ACTIVE (green on the FMA).

Hi Mats ! There is no mention of that in the fcom. Just lnav on the ground.It doesn't mention it in the Boeing 737NG CBT either ? Fred.

Hi Mats ! There is no mention of that in the fcom. Just lnav on the ground.It doesn't mention it in the Boeing 737NG CBT either ? Fred.

Page 982 of the FCOM2 (The one from PMDG).

Page 982 of the FCOM2 (The one from PMDG).

Thanks for that !! I don't have the NGX yet. Waiting a few days for the dust to settle. My Fcom is the Ryanair Vol 2 (804) pages. Cheers. Fred.

Thanks for that !! I don't have the NGX yet. Waiting a few days for the dust to settle. My Fcom is the Ryanair Vol 2 (804) pages. Cheers. Fred.

Fred, Sorry about that. Anyways, 10.7 (Or was it 10.8?) allows VNAV to be armed on the ground prior to takeoff. Now that said, I've heard that not all operators use it, so it's possible Ryanair falls into that group.

Fred, Sorry about that. Anyways, 10.7 (Or was it 10.8?) allows VNAV to be armed on the ground prior to takeoff. Now that said, I've heard that not all operators use it, so it's possible Ryanair falls into that group.

They sure do !!I am involved in teaching/training now and vnav would never be engageduntill at least 3000 ft. Much easier to use level change to untill finished with ATC. I personally like to fly an lnav/vnav cruise and if possible all the way to localizer and glideslope capture.Very automated but it does it so damn well !! Cheers.