When I was in Alaska summer before last there were still some airways
defined by NDB's, so called "Brown" airways (the airway is a brown
line). Interestingly, they have lower MEA's than the adjacent VOR
airway, presumably because of the service volume of the NDB's vs the
VOR's. Of course most pilots use the GPS to go NDB to NDB, but because
the MEA's are lower, I doubt there is a movement to get rid of the
airways. But things are always changing, so who knows?

"Chris Hoffmann" wrote in message ...
From what I've been able to find, I gather that these aren't in use in the
US anymore, and haven't been for some time. Seems they're still used in
Canada though, and are still mentioned in the FAR's. Something to do with
L/MF navigation, but I don't know what that is.

Heck, I can't even find mention of them on Gene's site, so they MUST be long
forgotten.

Someone please give me a history lesson here. Thanks.