Our feathered friends
If you remember which side of a localizer is “blue” and which is “yellow,” you’re either a historian or a true pelican. You also have an edge when it comes to certain oddball approaches.
Some approaches achieve a certain celebrity status by nature of their difficulty or mind-bending design. Such is the famous (some say infamous) LOC/DME-E into Aspen, Colo. It leverages two different localizers to give you at least a remote chance of slipping down between the mountains and seeing the runway, or slipping back up between the mountains to tell the tale if you don’t.