I did the same thing over at another forum last week, though regarding a suggested video of the coming F/A-18C's cockpit.
I never realised one little post could stir such feelings, I won't be able to look myself in the mirror for a while now.
You can only change this in the mission editor. Select the helicopter you want to configure and then flip through the tabs in the bottom right corner, in one of those you will find a box to untick.
This goes for both Huey and Hip.
A friend and I had a similiar thing happening to us yesterday.
In the attached track you can see me starting a crossunder at in game time 12:09:40. 12:09:48 I'm directly underneath him and suddenly both our engines catch fire. I wasn't able to see any smoke or flames coming of my flight leads aircraft but you can tell he also lost all thrust and had to ditch.
No game crash or any other problems, just engine fire. Near miss eng fire.trk
I believe I had freezes on my laptop yesterday when firing rockets, I noticed this late and today I got up early so I didn't dig any deeper into it. Will try to verify this later this evening again on my desktop computer.
Look at the end of this video and you'll see how I fire rockets from about 6000 ft at a 30 degree dive and hitting my target using a 50 mil depression of the sight in mode "Rockets".
I've been meaning to create similar charts my self but couldn't be bothered earlier since the spark for IFR in my community has been faint, until recently when a few guys seem to be enjoying it.
Thanks!