"Ron Natalie" wrote in message om...
"Snowbird" wrote in message om...

Even when there isn't an authorized VOR checkpoint one can
often pick up a radial somewhere on the airport, or track
the localizer on takeoff or something.

Tracking the localizer won't tell you anything about VOR errors.

Depends upon the source of the error. It is true it will
not tell you whether the OBS is aligned within 4 degrees
(or indeed 13 or any number)

It wil give information about other NAV/OBS errors.

When my OBS have failed to give full-scale deflection at the
appropriate deviation, this occurs with both localizer and
VOR. If there's a problem with the splitter, it's evident.
If one NAV radio isn't receiving properly, it's evident.

Regards,
Sydney