@ FairWeatherFlyer,
No, Its either the shell of an old Hughes 500 or else an R/C model of a 500 that was used in the blown up bits in all the episodes. (Some episodes it looks like a Huey that is blown up).
Shame Jan Michael Vincent turned out the way he did. He was drinking all the time on shoot of the series.
Also, hard to believe Ernest Borgnine is still going the same as ever, he has lived the best acting career alot of people think.