Jump to content

Sign in to follow this  
saltypete

FMC Insufficent fuel message

Recommended Posts

Hi, I have just encountered a problem with the fuel page of the 747 FMC. I set up a flight from NZAA to KLAX and set the fuel to well over 2/3 full and entered 50.0 as my reserve. I constantly got an Insufficent fuel message. I then set the tanks to COMPLETELY FULL and the reserve to 99.9 and still got the same message repeatedly. What am i doing wrong? I have given up after 3 hours of trying to fix the problem.

Share this post


Link to post

You need to set the reserve at the amount of fuel you want to have left when you get that message.Say you want 10,000 pounds of fuel left, you would enter 10.0. Then at any point during the flight your fuel left at destination goes below 10,000 pounds, that message will come on.Your problem is you are setting it way too high, set it lower, then you will see it go away. Hope it helps, and sign your posts with your real name per forum rules.


Mike Roth

Share this post


Link to post

I had a similar problem. The FMC showed 12 tonne left when I took off and the reserve was set at 3 tonne. All of a sudden after 4 hours fly time I suddendly got warning messages about insufficient fuel. Checking the FMC showed that I would run out well short of KLAX and there was a lot of zeros. I decided to stick with it and see what happened when I really did get low on fuel. After another 2 hours the message went away and suddenly I had 20 tonne by the time I hit KLAX. Checked the winds to see if that was the issue but they seemed to be exactly the same all the time.Anyway I made it with heaps to spare but if it had been a real flight it would had been a worry.


John Veldthuis

Specs: ASUS X79-DELUXE | Intel Core i7-5960X Extreme @ 4.2Ghz | Gigabyte GeForce GTX980 | 32GB Ram | Cooler Master HAF 932 case | ASUS PB279Q, 4K UHD, 27" Monitor | Windows 8.1 | Segate 2x2TB 7200rpm drives, SanDisk 2x256GB SSD| Corsair Hydro Series H105, Watercooling kit

Share this post


Link to post

The reserves are way too high. Are you using pounds or Kgs?A realistic figure would be 10 tonne depending on what alternate you are carrying for LAX...maybe 12.0 tonne.CheersSteve


Cheers

Steve Hall

Share this post


Link to post

Steve, I hope you don't mind, I sent you an email through the forum system.


Mike Roth

Share this post


Link to post

No problem Mike. The system said I had a message but would not show it in the inbox. Can you send it again?CheersSteve


Cheers

Steve Hall

Share this post


Link to post

Hi thanks to everyone for the help, the advice has helped me solve the problem and i have completed the flight without any worries. I have only owned the program for 4 days and already this forum has helped me on a couple of occasions. THANKS!!! your help is much appreciated!!!Pete Carlsen

Share this post


Link to post

Thanks Steve, I got your email. That was exactly what I was looking for. Thank you for your time. I did send a PM to you asking the same thing, as you said you didn't get it the first time, so you can just ignore that.Pete, glad you got everything figured out. :) Happy flying.


Mike Roth

Share this post


Link to post
Guest Spader

Another thing to bear in mind is this: just because you get the 'Insufficient Fuel' message doesn't mean that you will run out of fuel. I set my reserves to 7.0, and I will get the message, but I will arrive at my destination with a little over 3.0 in each wing tank.

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...