What's the difference between the "100 above" and "100" GPWS above callout?
&quot;100 above&quot; refers to being 100 ft above the decision height, which is the height at which the pilot must initiate a missed approach if they do not have the required visual reference. The equivalent call on a Boeing is ‘approaching minimums’. The decision height or minimums will commonly be around 200 or 300 feet, but it is airport specific, so when you hear the &quot;100 above&quot; call, you are 100 ft above 200 or 300 ft (300 ft or 400 ft above the ground respectively) - or whatever the decision height is for your specific approach.
The &quot;100&quot; call means that you are 100 ft above the ground.
The audio clip in your video is a bit confusing, and probably not taken from a real flight. During a real approach, you would expect to first hear &quot;100 above&quot; followed by &quot;minimums&quot;, since &quot;minimums&quot; is the call made at the decision height.