🛫 Ever wonder how pilots stay on course in the sky? They use a device called a "Course Deviation Indicator" (CDI)! The CDI shows if the aircraft is left or right of the desired flight path using a simple needle and scale. Ben Ellis, an instructor in our Aviation Electronics Technology (AET) Program, explained the significance of this device and its key role in Very High Frequency Omnidirectional Range (VOR) navigation and Instrument Landing System (ILS) approaches. AET students train with equip