Looking back on the history of DSA a.s.
| 1990 | - Delta System Air Association is established |
| 1991 | - we gain a licence for the operation of helicopters and airplanes |
| 1992 | - we begin our commercial air services |
| 1993 | - we begin HEMS Services (LZS) |
| 1994 | - we open our Flight school |
| 1995 | - we conclude the contract with the French company, Eurocopter |
| 1996 | - we begin using the AS 355 F2 helicopter in HEMS bases in Ústí nad Labem, Liberec and Ostrava |
| 1997 | - we acquire a backup AS 355 helicopter, a Schweizer 269C helicopter and a Piper Seneca airplane |
| 1998 | - we move to our own premises and gain an Approval certificate for maintenance and repair, as according to JAR 145 regulations |
| 1999 | - we premiere our Air Ambulance Show (nowadays known as the Helicopter Show) |
| 2000 | - the HEMS Association is established in the Czech Republic |
| 2001 | - we succeeded in securing a contract to supply HEMS Services until the year, 2003 |
| 2002 | - we start using the EC 135 T1 helicopter for air operations |
| 2003 | - thanks to our success with this service, we gain the opportunity to operate HEMS Services in Ústí nad Labem, Liberec and Ostrava for another 5 years |
| 2004 | - we obtain official representation from the Cessna A Textron Company for the Czech and Slovak Republic |
| 2005 | - we begin using the EC 135T2 helicopter for HEMS operations |
| 2006 | - we purchase and begin using the Beechcraft C90 turbo-propeller aircraft for our operations |
| - with begin the training of technicians according to PART 147 and make our place among a select few companies in the Czech Republic providing such demanding and costly training | |
| 2007 | - we purchase and integrate the Citation Jet CJ525 airplane into our operations |
| 2008 | - we succeed in acquiring 4 HEMS bases until 2016 |
| 2009 | - we acquire the FNPT II MCC flight simulator |
| 2010 | - we open a new maintenance centre in Praha-Kbely |
| 2011 | - we extend our Approval Certificate for business jet maintenance |
| 2012 | - we gain an extension to our Approval Certificate to conduct type-rating training for technicians according to PART 147 for Schweizer helicopters and Piper airplanes |
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2013 |
- we invest in an AS 350 B3E flying crane (a helicopter which has landed on Mount Everest), the most employed machine for Aerial work and for training pilots to work with cargo suspended under their helicopter |
| - the organization of our training programs are adapted to comply with CZ-ATO 006 regulations and we improve our work thoroughly in accordance with that legislation | |
| 2014 | - we gain the representation of the helicopter manufacturer, Enstrom, and buy an Enstrom 480 helicopter |
| 2015 | - we gain our first important contracts for the training of foreign clients and organizations |
| - we organize the Air exhibition, Air Show Prague, at the air base, Praha Kbely | |
| 2016 | -we increase flights from our Flight school – we push forward the annual number of flights to a total of 10 000 hours and reinforce our staff |
| - we are successful in aquiring a contract for HEMS operations in Hradec Králové and Liberec and continue our HEMS operations in Ústí nad Labem | |
| 2017 | - we succeed in the renewal of our contract to operate the HEMS base in Ústí nad Labem |
| - we finish the modernization of further facilities of the professional flight school and maintenance centre | |
| - as the representative of Enstrom, we deliver 6 Enstrom 480 helicopters to our partner | |
| 2018 | - we launch NVG (night vision) in HEMS operation |
| - we train new pilots to secure the future of HEMS Services | |
| 2019 | - preparation for the competitive tendering for HEMS (LZS) Service from 2021 (selection of helicopters, choice of pilots, business partners, etc.) and submission of the tender offe |
| - full-time NVG (night vision) operation at the HEMS base in Hradec Králové | |
| - completion of foreign pilots’ training on helicopters | |
| - purchase of the helicopter Enstrom 480, OK-ENV | |
| - initiation of a hangar building in Přerov | |
| 2020 | - signing the contract of HEMS Service at 6 bases for the period of 2021 – 2028 |
| - purchase of helicopters EC135 T2 for operation of the new HEMS bases and training of new HEMS pilots | |
| - completion of the hangar building in Přerov | |
| 2021 | - operation launch at 6 HEMS bases (Brno, České Budějovice, Hradec Králové, Jihlava, Liberec, Ústí nad Labem) |