Which DME are we talking about...and which DME were they reading.( RNAV 05)
If its 2 miles from the VOR ( 5 miles beyond the runway 05),and 500AGL then they are way to high!
If its 2 miles from the field, they should be 870 MSL( runway elev 120"),750 AGL.so they were 250 low.
So easy to fuc
up an approach when you rely on the wrong DME...( runway, Loc, Vor)