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soundrats

VNAV

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Hi out there, I read in a B777 Cockpit guide that with a second press on the VNAV Button VMAV should be disengahed. This does not work in my B777.

Is this a bug?

Tom

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Is this a bug?

 

Probably not, honestly.  What are you expecting to happen and what is happening that you do not expect?  A screenshot of before and after would be very helpful.

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Probably not, honestly. What are you expecting to happen and what is happening that you do not expect? A screenshot of before and after would be very helpful.

I just thought that VNAV should stop if the VNAV button was pressed the 2nd time - like a toggle on off.

Cheers Tom

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Indeed. In the 737 if you de-select a pitch/roll mode, it'll drop into CWS; the 777 doesn't have this, so you can't de-select them.

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Tom,

 

If VNAV is the ARMED mode (in white on the PFD), then a second push of the VNAV button disarms VNAV.  However, if VNAV is the ENGAGED mode (in green on the PFD), a second push will not disengage VNAV.

 

Rushad E.

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