I mostly fly on autopilot, and work on another computer next to my flight PC. Just not enough time in the day to do both separately. I keep my headphones on so I can listen to ATC and hear problems (I use FSPassengers which give me a 5% chance of having some sort of failure, and tracks my flights neatly for me).Anyways, this has happened on every flight I've taken this bird out on.For some reason, power to the engine drops. The engines don't shut down or anything, but manifold pressure disappears and the tachometer drops to 10. The plane then stalls as its trying to hold altitude with AP and I hear the stall horn with my headphones on. I'm at around 8 - 11000 feet when this happens.No idea what fixes this issue or what is causing it. Eventually it just figures its self out and power returns to normal. But I haven't a clue why.Thanks in advance for any advice on how I am probably flying this bird wrong.

I mostly fly on autopilot, and work on another computer next to my flight PC. Just not enough time in the day to do both separately. I keep my headphones on so I can listen to ATC and hear problems (I use FSPassengers which give me a 5% chance of having some sort of failure, and tracks my flights neatly for me).Anyways, this has happened on every flight I've taken this bird out on.For some reason, power to the engine drops. The engines don't shut down or anything, but manifold pressure disappears and the tachometer drops to 10. The plane then stalls as its trying to hold altitude with AP and I hear the stall horn with my headphones on. I'm at around 8 - 11000 feet when this happens.No idea what fixes this issue or what is causing it. Eventually it just figures its self out and power returns to normal. But I haven't a clue why.Thanks in advance for any advice on how I am probably flying this bird wrong.

There is an FSX bug that can create carb ice, even in a fuel injected airplane..Try hitting the H key when this happens, and see if it clears it.

The is an FSX bug that can create carb ice, even in a fuel injected airplane..Try hitting the H key when this happens, and see if it clears it.

Thanks for the swift reply. I'll try that out the next time it happens.Would it be safe just to leave that on the entire flight?

Would it be safe just to leave that on the entire flight?

Yes, you can. As Bert said, this is an FSX 'bug'.I have to, at times, turn on carb heat even in aircraft that don't have it when this loss of power occurs. Typically, after a few minutes, you can turn it back off, but not always.