Decades ago, we were flying an FMS demonstration in a Beech King Air with conventional analog flight instruments, a basic weather radar and an analog autopilot. The purpose of the demo was to show off the advanced capabilities of the FMS, including its ability to automatically transition from the en route to the approach mode. The avionics company that owned the aircraft suggested we challenge the system by selecting a non-precision approach with a DME arc from the initial approach fix ...


Register now for free access to "What’s It Doing Now? Making Instrument Standardization A Priority" and other premium content selected daily by our editors. 


Current magazine subscribers: digital access to articles associated with your subscription are now included at no added charge to you. Simply use your subscriber email to log in to your account (or contact us for assistance in updating your account).
Current Aviation Week Intelligence Network (AWIN) enterprise and individual members: please go to for access.


Already registered? here.