As part of the mid-life upgrade of the CH-47SD Chinook, DSTA spearheaded the aircraft’s modification design and software development to replace the avionics and install new mission systems. With the upgrade, the refreshed avionics system now incorporates new flight control modes and the Personnel Locator System, a sophisticated position and status reporting system. This system, together with a dual rescue hoist, will boost the search and rescue capability of the RSAF.


The DSTA team proposed improvements to the software design of the Digital Automatic Flight Control System, enhancing the aircraft's handling qualities and hover accuracy. The team also came up with innovative solutions to overcome interference issues experienced between the systems.

The developments and modifications carried out by the team have enhanced the mission capability and reliability of the aircraft, culminating in the completion of the first series of flight tests in August 2012.