ST Engineering Aerospace

ST Engineering Aerospace was established in 1975 to provide maintenance and support services to the Republic of Singapore Air Force (RSAF).

[2] During the 1980s, ST Engineering Aerospace commenced work on a major upgrade programme on the Douglas A-4S Skyhawk attack aircraft then in service with the Republic of Singapore Air Force (RSAF).

Referred to as the A-4SU Super Skyhawk, the modification package involved replacing the original Wright J65 turbojet engine with a non-afterburning model of the newer General Electric F404-GE-100D turbofan engine, along with a complete modernisation of the avionics suite and additional equipment being installed, including a Pave Penny laser seeker, an Inertial navigation system (INS), a Tactical air navigation system (TACAN), fore & aft Radar warning receivers (RWR) and chaff/flare countermeasures) of the aircraft.

[6] Under the joint development agreement, Eurocopter received a 61% controlling interest and technical leader in the programme, CATIC received a 24% work share and STAero received a 15% work share; CATIC designed and produced the cabin structure and fuel system, ST Engineering Aerospace produced the tail boom, access doors, and composite materials, while Eurocopter produced the dynamic assemblies, installed the avionics, electrical and hydraulic systems, and conducted the final assembly activity.

[12] In June 2014, the People's Liberation Army of China became the launch customer for the Harbin-produced HC120, reportedly placing an order for eight of the type with options for fifty more.