Jump to content

Sign in to follow this  
Guest dt1951

V-Speed Deletion

Recommended Posts

Guest dt1951

I have had this issue before and still can't make sense of it. If I do nothing to my FP as entered into the FMC, everything works perfectly. But after everything is entered and I go to the DEP/ARR page and select a SID and a runway (or even just change the runway when there is no SID), shouldn't the V-Speeds be automatically deleted causing me to go back to the TAKEOFF page to re-enter them? The problem is they aren't. After entering any changes in the DEP/ARR page the V-Speeds are still shown in the TAKEOFF page and on the NAV display. This rears its ugly head when I start my takeoff roll and engage the autothrottle (yes, I have armed the autothrottle prior to entering the active). At that time the V-Speeds get deleted (a check in TAKEOFF page of the FMC confirms that there are "---" in place of the V-Speeds). Then I am toast and have to end my flight because I can't get the autothrottle to engage in any mode. I have removed and re-installed all PMDG aircraft to see if someting was corrupted. But that has no effect.

Share this post


Link to post

Yes they should. Are the V speeds in large font or small font? If you are using FMC V speeds then you need to "harden them up" by selecting the keys immediately adjacent to each speed. If you are using tabulated speeds from a manual you will need to type each speed and line select it to the appropriate position. This will change the font to a larger style. If you selct a different runway or sid then the speeds will delete and you will get a message Take off speeds deleted.CheersSteve


Cheers

Steve Hall

Share this post


Link to post
Guest Hawkeyeted

Dan,Steve is 100% correct. It is normal for the FMC to delete the V-Speeds is you add/change the departing runway. V-Speed deletion is the FMC's way of saying "Hey, something has changed and you need to confirm the change".

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...