Just curious about the attached - what exactly is the dotted circle with distance and time in red which sometimes displays on a flight plan?

https://photos.app.goo.gl/3RvyBgaEGywK1kkK6

 

 

Hi Dane,

this is the aircraft endurance. Disable or enable this in the menu view or toolbar: Show Aircraft Endurance

See here: https://www.littlenavmap.org/manuals/littlenavmap/release/3.0/en/MENUS.html#show-aircraft-endurance

Or directly quoting from the 3.0 manual:

Quote

9.5.15. Show Aircraft Endurance

A dotted circle showing the maximum endurance is shown around the user aircraft if enabled. A label display endurance in NM and hours/minutes. The label turns orange if the endurance is below 45 minutes and to red if endurance is below 30 minutes. The endurance can be seen in Tab Progress when enabling Endurance in Aircraft Progress Display Options.

The endurance is based on fuel on board, current fuel flow and groundspeed considering reserves and contingency as set in the Aircraft Performance file. It is only shown if the user aircraft is airborne. You will see limited endurance if climbing to cruise altitude since the range depends on the current fuel flow and speed.

Running below fuel reserves might also result in zero endurance shown even with fuel on board.

Note that you will see red or orange endurance warnings if the wrong aircraft performance file is used.

Aircraft endurance shown with label. 384 NM and 3 hours and 18 minutes to go.

Alex

Thank you Alex, I figured it must be important.