Jump to content

Sign in to follow this  
Guest gihanjay

FMC LEG Page displays changing Flight Levels during fli...

Recommended Posts

Guest gihanjay

Hi Everyone,Got a question, I programmed my FMC using the FS navigator software and all speed changes and flight levels were checked before saving. After bring the Route to the FMC on the 747, set everything up for a flight and engaged LNAV. When I take off and put the flight into VNAV mode, I noticed the LEG page displaying different flight levels as it climbed to the requested Flight Level. I am not sure if it suppose to do that or it is a bug in the program. Please let me know what I am doing wrong.Thank youGihan

Share this post


Link to post

Gihan,If you are talking about the altitudes shown in small fonts this is perfectly normal. The FMC will recompute altitudes during climb and descent according to present conditions i.e. thrust, temp, winds etc, etc. Any hard altitude constraint, in big font, should be static.Hope it helps,


Mats Johansson
PMDG Flight Test Dept
Boeing777_Banner_BetaTeam.jpg

| Asus Z270-A | Intel i5-7600K @ 4.8 GHz OC/H2O | nVidia Geforce GTX 1070 8GB OC/O2|

Share this post


Link to post
Guest s_L_Y_F_a

are you using a SID and/or any altitude restrictions?

Share this post


Link to post
Guest gihanjay

Mats, I am not quite sure what you mean by small fonts but the LEG page of the FMC is where I noticed the numbers changing, next to the Speed refence. For example, 250/10000, that is next to a way point on the LEG Page. The 10000 number indicated will change, to let say 9987 or 9967 but never will it stay at 10000. I normally do not see that and wondered about it and could not figure it out why it keeps changing.

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  
  • 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.
  • Donation Goals

    AVSIM's 2020 Fundraising Goal

    Donate to our annual general fundraising goal. This donation keeps our doors open and providing you service 24 x 7 x 365. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. We reset this goal every new year for the following year's goal.


    2%
    $540.00 of $25,000.00 Donate Now
×
×
  • Create New...