"G.R. Patterson III" writes:
Peter Hermann wrote:
As a european pilot I would prefer meters.
But how to rearrange separation standards, any ideas?

Use 300 meters for every 1,000'. That's a little less
separation, but it wouldn't be too hard for a pilot to
deal with the arithmetic.

If flight levels were named in meters and were all a multiple
of 300 m, this might even add an additional communications-safety
mechanism:

In all valid flight levels, the sum of all digits would
always be divisible by three.

This adds a bit of healthy redundancy to a figure that needs
to be communicated without ambiguity over noisy radio channels.
Getting a single digit wrong would be spotted with 60%
probability. Almost as good as adding a check digit.

Markus