View Single Post
  #39  
Old March 14th 07, 03:50 AM posted to rec.aviation.ifr
Ron Rosenfeld
external usenet poster
 
Posts: 264
Default LPV vs LNAV/VNAV?

On Tue, 13 Mar 2007 21:53:19 -0500, "Stan Prevost"
wrote:


"Ron Rosenfeld" wrote in message
.. .
On Tue, 13 Mar 2007 19:31:58 -0500, "Stan Prevost"
wrote:


For an interesting GPS GP, look at the Jepp chart, if you have it, for the
RNAV (GPS) RWY 28 at KPQI. The GP starts down about 0.3 NM after the FAF.
This appears to be done in order to meet a crossing altitude restriction
insice the FAF, and still have a profile that brings you to an appropriate
height closer in to the runway.



I only have the NACO chart, and it doesn't show up that way. Shouldn't they
be the same if it is necessary to meet obstacle criteria?





Looking at it another way, also using trig and the same values, if you were
to start down at LISDE at 3.25°, by the time you got to PESIC (3.2 NM) you
would have descended 1104' instead of only 1000', so you would be 104' low
at PESIC.


Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)