On 20 Apr 2006 15:24:09 -0700, "
wrote:

WAAS Approaches have vertical guidance but they
are not classified as "Precision"

Bill Hale

What makes you say that. The only definition I'm aware of (in the P/CG)
only requires that the approach provide electronic vertical guidance:

"PRECISION APPROACH PROCEDURE- A standard instrument approach procedure in
which an electronic glideslope/glidepath is provided"

I might argue that an LNAV approach with "advisory" vertical guidance does
not really meet that definition, but surely an LPV approach provides
"electronic vertical guidance".
Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)