Mathematical Model of the Vehicle Exploitation System of the Tactical Air Base.- Modeling the document control at the airport.- Competitiveness Assessment of Polish Regional Airports Based on Location Planning Models.- Reliability of UAV in fire services operations. Tests and measurements of selected parameters.- Brexit. What will happen to flights between the United Kingdom of Great Britain and Northern Ireland and European Union countries? Legal aspects of air transport.- Modeling of ground handling processes in Simio software.- Safety first or safety sometimes?.- The impact of Covid-19 on airport operations .- Modelling of the runway capacity for the International Airport Krakow-Balice using Aimsun Next software.- Methods of Resource Modeling of Organizational Objects