IFR with a VFR GPS

Ron Lee wrote:
wrote:


Yes there is. RAIM provided integrity. As long as no signal error
exists (vast majority of the time) then your assertion is basically
correct.

Ron Lee

If I have my Garmin 296 on a roof mount antenna and I check its distance
to a VOR station against my DME, then do an IAP within 30 minutes, or
so, of that check with 6, or more satellites in view, I have essentially
as much integrity as an IFR box with RAIM.


That is incorrect. You have no assurance that there was not a signal
failure in that 30 minutes. The odds are in your favor but in no way
do you have the same integrity protection as an IFR GPS unit.

Ron Lee

The odds are overwhelmingly in my favor, certainly much more so than
using ADF for an IAP, or even VOR at distances near system limits.