Originally Posted by
Rivet
Could someone kindly tell me what the MSA is in the area of the approach they used.
If you center the 25 miles on Blacksod, it seems the determining height is on Achill, so probably 3100 if the criteria is 1000 above. They came across at 4000.
If a real IFR approach were to be centered around Blackrock as an IAF, the design standard would be for a crossing height of 1400 feet with that designated as the initial approach phase. 500 feet for the next waypoint BKSDA.