The project main objective is the demonstration of General Aviation and Rotorcraft capability to benefit from the concepts developed in the SESAR programme, in order to facilitate their integration into airspace and airports where the SESAR concepts and technologies are implemented. This objective was achieved through live flight trials and preparatory Real-Time Simulation campaign, with hardware and humans in the loop, which was focused on both procedural issues and technological aspects related to Global Navigation Satellite System technologies and simultaneous non-interfering operations. Specifically, the GRADE project demonstrated in flight, by using GA aircraft and Rotorcraft equipped with non-certified or specific on-board equipment, the following existing SESAR Solutions: Solution #51 – “Enhanced terminal operations with LPV procedures”, Solution #55 – “Precision approaches using GBAS CAT II/III”, Solution #103 – “Approach Procedure with vertical guidance”, Solution #113 – “Optimised Low Level IFR routes for rotorcraft”. The project also focused on technological aspects, testing in flight the following products, already available within the consortium and suitably customized to fit the above listed SESAR Solutions: GNSS EGNOS and GBAS navigation algorithms able to guarantee the applicable RNP; Portable non certified Primary Flight Display to support pilot decisions and operations. The live flight trials were conducted at two different sites and using three different aircrafts (two fixed-wing and one rotary aircraft). Flight tests data and information was collected and analysed by taking into account relevant applicable SESAR Key Performance Areas and suitably performance indices. Performance evaluation and lessons learnt represented the outcome of the project and was made available to support regulation, standardisation and certification activities, as well as the integration of GA and rotorcraft with commercial aviation.