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Forum: Tech Log

3rd Feb 2020, 22:58

Replies: 32

VNAV PTH and VNAV SPD

Views: 15,724

Posted By rudestuff

I can only speak for the 757, but in that...

I can only speak for the 757, but in that aircraft in VNAV SPD the priority is speed. In PATH, when the auto throttle is unable to maintain speed within parameters, it reverts to speed. If you open...

Forum: Tech Log

3rd Feb 2020, 22:31

Replies: 32

VNAV PTH and VNAV SPD

Views: 15,724

Posted By rudestuff

Do you have the cruise descent function? On ours...

Do you have the cruise descent function? On ours if you descend more than 50NM early it'll reset the cruise alt and descent at cruise Mach instead of descent schedule. It can be a gotcha as the IAS...

Forum: Tech Log

3rd Feb 2020, 20:26

Replies: 32

VNAV PTH and VNAV SPD

Views: 15,724

Posted By rudestuff

What plane is that? The thing to remember is all...

What plane is that? The thing to remember is all VNAV systems are similar yet different. A VNAV path is projected backwards from the last constraint at an angle that assumes idle thrust at the FMC...

Showing results 1 to 3 of 3