Distance Measuring Equipment Threshold VOR 
Pilot Institute
JANUARY 14, 2025
DME (Distance Measuring Equipment) calculates the slant range distance to the runway using radio frequencies. Modern IFR-certified GPS can also substitute for DME, providing precise distance information as outlined in AIM 1-2-3. What Equipment Do You Need on the Aircraft? for the localizer and 0.7
Pilot Institute
JUNE 19, 2025
On runways used by international commercial flights, a threshold must be present (we’ll look into that later in this article). Non-precision runways often look similar to visual runways but feature threshold and aiming point markings. A runway threshold identifies the beginning of a runway.
Air Facts
MAY 7, 2025
The airport was central to the region and was well equipped as an alternate with long runways and an ATC control tower staffed with trained controllers from 6 am until midnight every day. In the 70s, enroute navigation was usually on VOR Airways (Very High Frequency Omnidirectional Radio). The Tower had no radar.
Expert insights. Personalized for you.
Let's personalize your content