That's been my experience too, I think they made it 5 seconds. I mean really when you think about a dog fight, you can lose altitude fast trying to keep your speed up and 10 seconds without power is almost always a forced landing. The 5 second cut off makes for more fun, you have to tail your kill all the way to the ground. Reminds me of a ww2 fighter squad briefing, "Ok men! Stick with your wing man, 4 eyes are better than two. Follow your kills to the deck! If you get a flamer, let it go, he's a goner. If it's just smoking, follow him in, he could be faking!"