While the saw-tooth serration has been tested near the trailing edges of flat plates, symmetric and asymmetricairfoils, and wind turbine blades at relatively high Reynolds numbers, very little can be found in literature to examinethe effects of serrated trailing edges on the aerodynamic and aeroacoustic performances of small UAV propelleroperation at much lower Reynolds numbers (~104). With this in mind, we conducted the present experimental studyto characterize the aerodynamic and aeroacoustic performances of small UAV propellers with serrated trailing edgesunder hover and forward flight conditions. This was done in order to improve our understanding about the effects ofsaw-tooth serrated trailing edges on the aerodynamic forces, noise generation, and flow structure characteristics in thewakes of UAV propellers.