Structural arguments are proposed that support the hypothesis that the equilibrium 5f-surfaces of i-AlPdMn icosahedral alloys are actual cuts of the bulk structure with almost pure Al termination planes [1, 2] corresponding to actual bulk properties with no need for possible Al segregation on the surface. Most of the 5f termination planes in i-AlPdMn are made of two close planes containing essentially Al at the upper one and Al and Pd at the second one (see for instance [3]). Here, perfect unrelaxed structural models that differ only in the chemical distribution of the atomic species are devised, close to the description proposed in [4]. Once compared to experimental X-rays data [5], the calculations show that although the chemical decoration has a rather limited in uence on the global R-factor, there is a clear tendency toward favoring models with almost pure Al on the atomic surface located on the node n, in excellent agreement with the surface studies.