So what do you periodically use to align the DG to? Hint: it's not the true
magnetic north as see out of the window....


"Mxsmanic" wrote in message
...
writes:

Sorry, I have to mildly disagree as far as flying goes, that you'd
automatically be in "deep trouble". Many pilots use just the
compass / DG for cross-country flying.

A compass / DG is not just a compass.

You can't do much with just a compass alone. You need a clock, some
charts,
other things ... not _just_ a compass.

Therefore a simple compass
was "good enough" for winged flight across the Atlantic starting in
1919. which is not "four hundred years" ago.

They had more than a simple compass. In particular, they had accurate
clocks,
and charts.

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