Engine Flame Out during Concord Flight

[Guest zampier]

Hello,

In my last 2 flights in Concord (FSX) I had an Engine Flame Out when I was leveled in my cruise flight level. First, Eng #4 start flame out, without change anything in the configuration of the aircraft. After some minutes, ENG # 1 and #2 flame out too.

This situation happens in my last 2 flights. Before that I had made more than 10 legs with Concord without any problem.

Thanks for any help....