Sorry for the slightly misleading title, but it highlights a problem that I have with a handful of AI planes. In short, they look like they have rocket engines when in flight! I started a short flight last night, banked to the left to head for my destination, and noticed an AI plane with what looked like flames shooting out of the back. I have slewed up close to one or two in the past, and it is actually more like a series of afterburner "pulses" coming out of the engines.....except that the handful of planes that I have seen this problem with do not have afterburners. In fact, I saw this problem with a Lockheed Electra!

 

Does anyone know what is going on here, and how I can stop it?

Do you use some third party AI addon?