It is understood that while the aircraft crashed last August on a special forces mission, it has only now been disclosed.
It has emerged that the Hercules was returning after picking up UK and US troops at a desert airstrip in Syria. This is understood to be the first loss of an aircraft for the United Kingdom as part of Operation Shader.
Operation Shader is the operational code name given to the British actions in the ongoing military intervention against Islamic State. The operation began in Iraq on the 26th of September 2014, following a formal request for assistance by the Iraqi government.
Almost every type of aircraft in Royal Air Force service has been involved in the operation with Hercules aircraft dropping aid and also operating with special forces which are understood to be heavily active in the country.
A Ministry of Defence spokesperson declined to comment claiming that any confirmation either way was likely to prejudice the capability, effectiveness, or security of the armed forces.