This Chinook was Boeing test registration N37040 before it was delivered to the RAF on 28 September 1981. It was built as a HC1, converted to HC2 and later to HC4 and HC6A. Echo Oscar is here seen assigned to 1310 Flight, that operated Chinooks in Afghanistan's Helmand Province for Operation Herrick and Kandahar Province supporting the International Security Assistance Force on Operation Toral. The flight had eight Chinooks under its control. In November 2014 five of these were returned to the UK and the three remaining were moved to Kabul to support the personnel training the Afghan Army.