Recently, Steven P. McNicoll posted:

"Roy Smith" wrote in message
...

But it's legal to fly those very same approaches with a 30 year old
ADF which points vaguely in the direction of either 1) the radio
beacon, 2) the
nearest T-storm, or 3) some other random propagation anomaly, and an
equally ancient DME which is doing good if it's correct to within 1/4
mile.
Gotta love the FAA. A fine example of why getting all the government
you've paid for is a bad thing.


You can't substitute GPS for ADF on an NDB approach.

Of course not. If one did that kind of thing, they might actually arrive
at their intended destination.

Neil