again Hg is important and obstacles too
again Hg is important and obstacles too. In the example cited, if you have a TCH of 50 feet and the gear is significnatly lower like 20 feet, you are really not clearing ther threshold by that much. Add a small obstacle in close and trouble. I think for low visibility approaches in US, it the TCH is less than 50 feet, the operator needs to perform an obstacle assessment. Nightdog83, sir.