US Department of Defense.OBERPFAFFENHOFEN – July 17th, 2025 

The modernization of the Royal Thai Navy’s (RTN) Do228 fleet has successfully reached  the next milestone: General Atomics AeroTec Systems (GA-ATS) has delivered the third  modernized aircraft to the RTN in U-Tapao, Thailand. The first two aircraft were  successfully handed over in 2023. 

Extensive modernization program for future missions 

The RTN fleet of seven Do228 aircraft is currently being upgraded as part of a  comprehensive modernization program. The project is being carried out in cooperation with  the US Department of Defense and its DoD Grant Assistance Program of the Indo-Pacific  Maritime Security Initiative. The aim is to adapt the mission-proven Do228 to the  requirements of modern missions. 

During the modernization, the aircraft was completely refurbished and underwent an  intensive structural inspection. In addition to necessary repairs, central structural elements  were also completely renewed. A key aspect of the upgrade is the “New Generation” glass  cockpit, which replaces the previous analog instruments and offers pilots a state-of-the-art  digital user interface. It has been a system that has proven its reliability and will be  continued in the Do228 NXT production. 

After the first two aircraft were handed over in 2023, the third aircraft had now also  successfully undergone the extensive overhaul and had been handed over to the RTN a  few months ago. This continues the modernization project of RTN’s Do228 fleet, and the  next aircraft is already at GA-ATS for maintenance work. 

 US Department of Defense.Do228 with new mission equipment in operation for coastal protection 

The Royal Thai Navy has been successfully using the Do228 for coastal surveillance  missions for many years. As part of the modernization program, the fleet is being equipped  with state-of-the-art mission equipment. The new systems and technology include an all round radar installed under the fuselage, an electro-optical camera with infrared function, a  data link system and an automatic identification system for ship identification. 

The cabin had also been redesigned and equipped with an ergonomic mission  management console that enables efficient planning of missions, operation of special  equipment and analysis and evaluation of data. These improvements significantly increase  the Royal Thai Navy’s effectiveness in securing borders and monitoring its territorial waters. 

In addition, specially designed seats for operators and observers provide optimal support in  various operational scenarios. 

Another advantage of the Do228 is its exceptional flexibility. The cabin interior can be  quickly removed, allowing the aircraft to be easily converted for alternative tasks such as  cargo transportation or medical evacuation missions. 

Successful delivery to Thailand 

After successful ground tests and extensive flight tests, the modernized aircraft was ferried  to Thailand a few months ago and ceremoniously handed over to the RTN. With this third  delivery, GA-ATS underlines its expertise in the modernization of the Do228 and continues  its successful cooperation with the Royal Thai Navy and the US Department of Defense.