The Republic of Singapore Air Force (RSAF) is beginning to upgrade its AH-64D Apache fleet with new electronic warfare and communications systems, the Singapore Ministry of Defence said April 20.

The upgrade program includes equipping the Apaches with a Helicopter Integrated Electronic Warfare System (HIEWS) for enhanced survivability and satellite communications (SATCOM) for improved communications.

Singapore “has always taken a rigorous and prudent approach in planning for our defence needs and will equip sufficient helicopters to meet Singapore’s defence requirements,” the ministry said in a statement.

The upgrades are expected to be finished within five years.