This paper presents a CFD model for smoke dissipation inside a 707 cargo compartment under fire conditions. The model can provide information on temperature distribution and smoke transport. The mass conservation, momentum, energy, and turbulence model equations were solved using the finite-volume method with a passive scalar approach to model the smoke (CO, CO₂ and soot) transport. In order to validate the adopted procedure, the numerical results are compared with both experimental data and also CFD results provided by Federal Aviation Administration developed code. Temperature profiles along the ceiling cargo compartment exhibit a buoyant plume pattern that rises directly above the localized fire source, strikes the ceiling, and creates a ceiling jet flow. Predictions obtained for smoke concentration are in good agreement with experimental results. It is shown that the proposed method should be useful for designing a smoke management system and the CFD smoke transport model has potential to satisfy the certification process.