Recently I had a flame out on a jet just a few feet before touch down. Lucky that the engine flamed out where it did else it could have been bad.
I am trying to debug the problem that could have caused it. Upon inspection I found that the two main tanks were half full, the hopper tank was completely full, the tube between the hopper and the bubble trap was half full, meaning half full of Air. However the tube from the bubble trap to the pump was full. Now the worst part. The bubble trap itself was almost empty. Needless to say there is a Big problem. I have checked all the tanks and tubes and found no leaks whatsoever. What can cause air to enter into a bubble trap? I have checked the bubble trap and it's totally sealed as well.
The flame out occurred after several successful flights. So the fuel system did work flawlessly for those flights. Any advice about where to begin?