Isothermal vapor-liquid equilibrium (VLE) data for the propane + 1,1,1,2,3,3,3-heptafluoropropane (R227ea) binary system were measured at 293.16, 303.14, 313.14, 333.15, 343.16 and 353.18 K and pressures up to 3.5 MPa. The experimental method, used in this work, is of the static-analytic type. It takes advantage of two pneumatic capillary samplers (Rolsi(TM), Armines' patent) developed in the Cenerg/TEP laboratory. The peculiarity of R227ea-propane binary system is to present azeotropic behavior at each studied temperature. The six sets of isothermal P, x, y data are represented with the Soave-Redlich-Kwong (SRK) equation of state (EoS) and several mixing rules involving the NRTL model.