"Newps" wrote in message
. ..


Danny Deger wrote:


I used to own a 35 model Bonanza and it was unstable in roll and would
easily enter a "death spiral".


No certificated GA plane is unstable in roll.

I simply disagree. A GA plane, if put it a small roll can have the roll
increase if the pilot does nothing. The 35 model Bonanza is unstable in
roll. Go rent one and see for yourself. If you put it in a 30 degree bank
and let go of the stick, the roll will increase until you are in a death
spiral. That is why so many Bonanzas end up in one compared with other
airplanes. As far as I know, all Cessnas are stable in roll, i.e. without
pilot intervention they roll back to wings level.

I have a Masters in Aerospace engineering and my thesis was how to certify
light aircraft. The regs clearly state unstable in roll is acceptable.
They must be stable in pitch, but not in roll.

Danny Deger