Hi guys,
My first post.
I figure the answer is this....3 hpa equals 90 odd feet. 4 equals
120 feet.
The obstacle clearance from the MAPT provides only 100' clearance along the missed approach path. Therefore on a single engine missed approach from the minima with your QNH out by 4 hpa (quite possible) your strawberry jam spread on someones hillside. Thats why you never go below minima
No proof on that one ..just common dog fark
