This work presents the assessment of the methods for the quantification of aircraft loads within the second work package, “Methods for the Quantification of Aircraft Loads”, in the German Aerospace Center (DLR) project, iLOADS. This paper assesses and compares different aircraft loads analysis methods with different levels of complexity. Three topics relevant for aircraft loads analysis are addressed in this paper: aerodynamic methods for aircraft loads analysis, dynamic loads analysis methods and effects of the aircraft controls on the aircraft loads. These disciplines are analyzed both for the whole aircraft design level and for an aircraft component design level. Results from these analyses are compared with reference data. An important result of the work is information on the precision and conservativeness of the loads result from each of these approaches.