DME Basics

Distance measuring equipment is among the most valuable black boxes on the panel, especially for the IFR pilot. But there's a lot more to DME than turning it on and watching the numbers count down. AVweb's avionics guru explains how DME works, its inherent errors and limitations, and what to do if it stops working.

Enter the e-mail address of the recipient. Multiple addresses need to be separated by commas.

Note: Your e-mail address, and that of your recipient, will be used only in the case of transmission errors and to let the recipient know who sent the story. The information will not be used for any other purpose.