The results of limb radiance calculations in the 9.6 μm ozone absorption band are presented for the tangent heights 30 - 110 km. Deviations from local thermodynamic equilibrium (LTE) are taken into account for 20 vibrational transitions forming ν₁ and ν₃ bands. The monochromatic limb radiance in line contours has been investigated for fundamental and hot bands for LTE and non-LTE. Variations of radiance stipulated by variations of kinetic, vibrational temperatures and ozone concentration have been analyzed. For day- and night-time limb radiance spectra have been calculated for different spectral resolutions. The approach is suggested to retrieve ozone profiles under non-LTE conditions using high-resolution limb spectral measurements (e.g., obtained by space-borne devices of MIPAS type).