Sign in to follow this  
Guest stevesj

VNAV disconnect

Recommended Posts

Hi Can anyone tell me what the possible reasons are for a VNAV disconnect on the 737. I can find LNAV reasons in the manuals but not for VNAV. I am finding this problem if I disconect to go to V/S or LVL CHG and then wan to go back to VNAV after, if that helps ?MTIASteve

Share this post


Link to post
Help AVSIM continue to serve you!
Please donate today!

When you try to return to VNAV are you adhering to any altitude restrictions set on the leg you are flying ?Peter

Share this post


Link to post

Hi PeterYes, as I had the same thought. Steve

Share this post


Link to post

If you overspeed or reach vmo/mmo it will revert to lvl ch. Under 10' I believe it is more restrictive soi watch your speed and use the speedbrakes when you get DRAG RQ................Randy J. Smith................A PROUD MEMBER OF THE PMDG BETA TEAM[h4]Evolution is a process that results in heritable changes in a population spread over many generations[/h4]

Share this post


Link to post

Thanks Randy, in this case I was far from VMO (220KIAS), this is perhaps a more complicated question than thought. When/if it happens again I will note the scenario better.CheersSteve

Share this post


Link to post

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this