Originally Posted by
Voidhawk
The GS only provides terrain clearnce in the final segment, which starts at the FAP.
Before the FAP, the minimum altitudes of the intermediate and initial segments provide terrain clearance. As the descent gradients in the initial and intermediate segments can be greater than in the final segment, these minimum altitudes could be above the GS - whether it’s a hot day or not.
Those charted altitudes assume standard atmosphere, which is why we temp compensate at cold temperatures. No reason not to do so for hotter temps than standard, but it’s not done.