Hello cessna729, i reinstalled the whole x-plane, only installed the Jetstream to be sure no other aircraft plugin causes the malfunction. Then I tried the same flight again in 64bit and again passing FL100 right engine on fire. All engine instruments well below red lines. CAVOK Conditions. Ok, then I tried 32bit. The flight goes well for 30 min, then the same - fire on right engine. I keeped all within the limits and out of nothing the plane jumps again. If I overheat the engine, it should burn within a few minutes according the manual, not after 30minutes. I attached a video, which is unfortunately bad quality, but you can get an idea of what I mean. Please see the weather radar switched on, without red clouds, without any clouds. Jetstream32_1.mov