Review. comparison and analysis of fatigue estimation methods of aircraft structures Fatigue Estimation Methods of Aircraft Supporting Structures Fatigue Calculation Analysis Aircraft Loads Spectrum Fatigue Tests of Selected Elements or Critical Points of Aircraft Supporting Structures Numerical Crack Growth Simulation and Residual Strength Estimation Calculation Analysis Procedure of the Fatigue Durability of the Critical Points of Aircraft Supporting Structures Reliability Coefficients Selection Evaluation and improvement of fatigue analysis methods and relevant testing Fatigue Load Cycle Reduction to Equivalent Cycle - DGD Loads Reduction’s Hypothesis Equivalent Load Cycle Fatigue Life Calculated According to Oding Hypothesis and According to DGD Hypothesis New Limit Curves of the Complex Stress - State Fatigue Strength Nomenclature Huber-Mises’ Hypothesis New Limit Curve Modification of the Gough Limit Curve Hypothesis of Loads Cycle Reduction to Equivalent Fatigue Cycle Nomenclature Proposed Hypothesis of Discretionary Load Cycle Reduction to the Equivalent Fatigue Load Cycle Development of idea of continuos fatgue estimation of airframe structures Theoretical Fundamentals Reduction of Complex Load Loads Cycles Reduction to Equivalent Fatigue Loads Cycles Realization of the Idea The Idea Justification Possibility of Application and Conclusions Identification and analysis of fatk. l e critical areas of airframe structures Selected Elements and Fatigue Critical Areas (FCA) of Aircraft Supporting Structures Example of the FCA of the Small Aircraft Structure Identification of the FCA Actions Taken in Order to Solve the Problem Loads and fatiglere corders Purpose Requirements Autonomous Fatigue Recorder AFR AROS Main Parameters of the Recorder AFR Hardware and Software Solutions Recorder Test Examples of AFR - AROS Practical Application The Spectra of Longitudinal Accelerations of a City Bus Autonomous Loads and Fatigue Recorder - ALFR Basic Data Software for Analysis, Development and Presentation of Data from the Recorder Selected Operating Windows of the Software for Analysis, Development and Presentation of Data from the Recorder In-Flight Testing of the Recorder in an Aerobatic RC Yak -54 Model . In-Flight Testing of the Recorder in the PZL M-26 Iskierka Aircraft Monitoring System of Structures’ Loads - MSoSL (SMOK . Preliminary Testing Monitoring System of Structures’ Loads (MSoSL Monitoring the Assembly of a Structure Structure Operation Composite joints as a method of fatigee strength increase of airplanes strecter. - idea. tests and applications The Idea Fatigue and Static Test of Isolated Composite Joints Tests of a Truss Estimation of cem l latin e fatigue damage Characterization of Complex Fatigue Loading Energy Based Fatigue Criterion Cumulative Fatigue Damage in Terms of the Total Strain Energy Density Energy Based Cumulative Fatigue Hypothesis Sure, glance on nonlinear fatigee damage accumulation