Riyadh : The Kingdom of Saudi Arabia has ordered four additional Airbus A330 Multi Role Tanker Transport (MRTT) aircraft for the Royal Saudi Arabia Air Force (RSAF).The first of these aircraft will enter into conversion at the beginning of 2026; they will enter into service and join the RSAF in 2027 to carry out air-to-air refuelling and transport missions.The A330 MRTT is the most capable new-generation tanker and transport aircraft with 90% market share outside the USA with 82 orders from 15 countries in Europe, Asia, America and Oceania.