Our Company sets 150 ft for Precision approaches and 300 ft for non-precision approaches.
The reasoning for this comes from a recommendation from the Flight Safety Foundation to prevent CFIT in the landing configuration.
Our SOP says if at ANY time you get a "minimums" GPWS call and are IMC carry out an IMMEDIATE go-around.
In Aus there are no ILS minimums below 150 ft AGL or NPA MDAs below 300 ft AGL so if this warning happens and you are IMC
1. You missed the MDA /DH
or
2. You are in the wrong place
ie wrong aid selected or wrong plate/ minima being flown
Any one else use this ???