Despite the version being "R16-KSP1.4.1-recompile", CKAN has ksp_version set to 1.3 so it doesn't show up when I searched for it.
https://github.com/KSP-CKAN/CKAN-meta/blob/master/KerbalFlightIndicators/KerbalFlightIndicators-R16-KSP1.4.1-recompile.ckan