"TxSrv" wrote in message
. ..
Mxsmanic wrote:
You can find the answer in FAR 91.121(a)(iii).

Found it, thanks. I'm surprised that just setting it at the airport
would suffice--one could conceivably fly for hundreds of miles VFR,
and the altimeter could change significantly along the way.

That Reg does not apply to flight within 3,000 above the surface. You have
to look at two other Regs to conclude that.

The requirement stated in 91.121a1iii does not include any exception for
flights under 3000' AGL. If you have an adjustable altimeter, you have to
set it according to 91.121, regardless of your altitude.

Therefore, under 3,000, an adjustable altimeter is not required per
91.205.

According to 91.205, an adjustable altimeter is only required for IFR
(regardless of altitude).

--Gary