"Paul Tomblin" wrote in message ...
In a previous article, "Peter Duniho" said:
And actually, while I haven't flown the Pipers you're referring to, my
understanding is that the gear extension was based on airspeed, not engine
power. Your comment about the behavior of such systems in icing conditions

The POH for the Lance isn't 100% clear on this, but my understanding is
that with the emergency gear extension, the gear will come down if you go
below a certain manifold pressure at one speed, or will come down
regardless of the manifold pressure at a lower speed.

The Arrow auto extend is simply a mechanical belows on the second pitot (just
behind the clear prop window) that dumps hydraulic pressure when you get slow.