The GOES-R PLT Field Campaign Scanning High-Resolution Interferometer Sounder (S-HIS) dataset consists of emitted thermal radiances measured by the Scanning High-resolution Interferometer Sounder (S-HIS) flown aboard a NASA ER-2 high-altitude aircraft during the GOES-R Post Launch Test (PLT) field campaign. The GOES-R PLT airborne science field campaign took place between March 21 and May 17, 2017 in support of the post-launch product validation of the Advanced Baseline Imager (ABI) and the Geostationary Lightning Mapper (GLM). Data files in netCDF-3 format are available for March 21, 2017 through May 17, 2017.