DSA a. s. is in the aviation business since 1992. The company’s main business activity has become providing aerial services in the medical system from repatriation flights to air rescue service in the Czech Republic since 1993. The company desposes of the biggest flight school within the Czech Republic providing trainings for private pilot qualifications up to Air Transport Pilot qualifications. DSA a. s. also uses its own aircrafts for air transport, air-taxi and aerial works. In its own maintenance centre carries out the maintenance for all its fleets. It also provides maintenance for other aviation operators in the Czech Republic and EU.