Sign in to follow this  

IAS Mode

Recommended Posts


Could you explain how to engage IAS mode precisely with Falcon 50 and how it works, VS mode is working for me but i don't succeed with IAS mode!

Best regards

Share this post

Link to post
Share on other sites
Help AVSIM continue to serve you!
Please donate today!

Posted (edited)

Hi Jerome,

As I understand, IAS mode will attempt maintain the airspeed at which the aircraft is flying at the time of selection by adjusting the pitch of the aircraft. You can then adjust the rate of climb if you wish by increasing or decreasing the power settings. The advantage of IAS mode is that it will not allow the aircraft to go into a stall but if you are climbing in VS mode, the AP will try to maintain the selected rate of climb and this may lead to a stall unless the rate of climb is reduced. 

Unless you wish to fly the early part of climb manually or using VS, the procedure is to select IAS once your desired airspeed has been reached (usually 250kts below 10,000ft) and use ALT SEL to ensure any altitude restrictions (such as those in a SID) are not breached. When in IAS mode the aircraft will level out at the selected altitude in the same way as it does in VS mode. The general advice is to use IAS mode for climb and VS mode for descent. 

I have no experience of flying a Falcon in the real world and someone who has may be able to give you more precise information but I hope this helps a little!


Edited by scianoir

Share this post

Link to post
Share on other sites

Hi Bill, 

Thank you very much lot for this clear explanation, now i understood the IAS Mode and it works great, i succeeded to  engage this mode especially for climbing!

Have a good day.

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