Entering RAF service in 1980, the mighty Boeing Chinook HC.1 has benefitted from almost constant upgrade and further procurement since that time, and has become an essential component within Britain’s military capabilities. Indeed, it seems as if the only aircraft capable of replacing a Chinook is another Chinook, a situation not likely to change for many years. With the latest Chinooks being some of the most advanced aircraft in the current Royal Air Force inventory, the Chinook Sustainment Programme will ensure these aircraft can continue serving the nation in a way only the Chinook can, for at least the next two decades.