Insufficient Fuel message - Always?

[roland_lfor 245]

Hello,

I'm always using the Fuel & Load manager to compute required fuel from my flight plan and inject it in the aircraft tanks.

I insert in the FMS the right inputs, and the same final reserve (usually 1000 kgs).

But on all my flights, yet during the climb, The FMS displays the "Insufficient fuel" message. However I'm able to land each time with more that the planned reserve.

I'm pretty sure I'm missing something, but what?

Thanks for your tips

[Bentree_ 9]

Hi Roland,

My procedure for filling the tanks is the same as yours, though i set around 3-4 as final reserve.

On many flights the FMC gives me the "Insufficiant fuel" message, whereafter i reset the reserve fuel to 2 wich deletes the message.

Always i still have sufficient fuel after landing, just like you.

I wonder also what that is?

Kind regards,

Ben

[ega 98]

Confirm that you insert the total fuel on board (not the trip fuel!) on the FMS´s  PERF INIT page.  

[roland_lfor 245]

You are right! I always input the trip fuel (scheduled).

However (I need to double check) but I think that the TOW was correct, should it be?

Thanks

[Bentree_ 9]

I always fill in the Total fuel and got the fuel warnings

[pete_auau 1,157]

Could be  wrong  here  but  some  one  will correct,   think its  saying  your  using  your  reserve  fuel  to  your  alternate  airport   since   you have  imputed   a  lower  value   in  your  reserve   fuel  in the fmc.  This has  been   mentioned  a few  times  in other  addons  threads  eg  ngx,  777 

Edited March 13, 2018 by pete_auau

[Omaniac 3]

Not 100 % sure but I think a warning is generated every time you are set to land with less than a fixed value of 2000 kgs. The one you get. Then you have a different warning if you land with less than your diversion fuel. That is the fuel you have entered in the FMC.

The fuel you enter in the FMC should be your final reserve fuel (30 mins) + fuel to alternate + any extra fuel. 1000 kgs is way too low, and you will then  most likely go below 2000 kgs in your flight = fuel warning.