C J Campbell wrote:

Humph. Tell my boss that. He won't allow the 172's to be used for
spin
training, citing that it greatly shortens the life of the gyros,
knocking
them around from stop to stop.

The (non-cageable) gyros in my Cherokee do seem to take a beating
when I'm out doing spins. It's not uncommon for the AI to tumble when
the plane rolls over into the spin entry. I've always assumed that
gyro maintenance was going to be part of the cost of spinning the
plane, but surprisingly, the gyros are just fine. I've been spinning
them regularly for 10 years now and I still haven't had one die on me.


John Galban=====N4BQ (PA28-180)