Herein the computational result of electromagnetic scattering analysis on a LO inlet is reported. The work reported here has been conducted within the FoT25 project "Propulsion integration". As a computational tool the in-house FE-code EM3D has been used. The inlet cavity was analyzed with and without radar absorbing material (RAM) on the cavity wall, i.e. computations were made on a model with prefect electrical conductor (PEC) as a boundary condition on the cavity wall and with RAM covering the cavity wall respectively. The RAM, consisting of two material layers, was constitutively modelled by material parameters in the FE-elements. The results show that the here used RAM will reduce the RCS roughly 2-3 dBsm, from a maximum of 12-13 dBsm to a maximum of 10 dBsm. All calculations were made in 1 GHz at HH-polarization.