Agreed also, but if at night, the ground can be hard to see
if there is no moon or ground lights. The question is some
what academic, even aircraft without radios often have a
handheld and altimeter settings can be had from ATIS, etc.

The point about GPS, it is accurate in relation to terrain.
It is not good for IFR separation or ATC boundaries.


"Stefan" wrote in message
...
| Jim Macklin schrieb:
| The question was IF no radio available to get a
corrected
| altimeter setting... if a GPS is available the GPS
altitude
| is better than no correction at all.
|
| Agreed.
|
| Probably, most NORDO flights are at or below 3,000 AGL
under
| VFR. Terrain clearance is more critical to such a
flight
|
| In such a flight you usually just look out of the window
for terrain
| clearance.
|
| Stefan