Jump to content
Sign in to follow this  
Dan208B

Odd VNAV Throttle Behavior

Recommended Posts

I'm having a weird problem when descending with VNAV. If I let the aircraft reach top of descent and start down on it's own in VNAV, everything works normally and the power reduces to idle smoothly. However, if I use the "descend now" function, it will start down slowly and reduce power a little bit like it's supposed to, and when it catches up with the VNAV profile and captures the path for a steeper descent, the throttle mode switches to "hold" and will overspeed if I don't manually reduce power to idle. Perhaps I've missed something, but I believe it's supposed to retard to idle at this point on it's own. Any input would be greatly appreciated!

Share this post


Link to post
Share on other sites

I'm having a weird problem when descending with VNAV. If I let the aircraft reach top of descent and start down on it's own in VNAV, everything works normally and the power reduces to idle smoothly. However, if I use the "descend now" function, it will start down slowly and reduce power a little bit like it's supposed to, and when it catches up with the VNAV profile and captures the path for a steeper descent, the throttle mode switches to "hold" and will overspeed if I don't manually reduce power to idle. Perhaps I've missed something, but I believe it's supposed to retard to idle at this point on it's own. Any input would be greatly appreciated!

If your using a hardware throttle, be sure you bring it back to idle as well else you will get this problem. Its in the manual somewhere, I think it was the tutorial. 


CYVR LSZH 

http://f9ixu0-2.png
 

Share this post


Link to post
Share on other sites

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  

  • Tom Allensworth,
    Founder of AVSIM Online


  • Flight Simulation's Premier Resource!

    AVSIM is a free service to the flight simulation community. AVSIM is staffed completely by volunteers and all funds donated to AVSIM go directly back to supporting the community. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. Thank you for your support!

    Click here for more information and to see all donations year to date.
×
×
  • Create New...