But does this mean that in the event of an engine change down route there is a possibility of getting the wrong one sent out?
Possibility? I'm sure with very little work the MoD Logisticians will be able to reduce that possibility to a certainty....
PS. Same engines, different gearboxes. Not sure if you can do an engine change "down route" and swap gearboxes across or if the engine would need to ship out with the correct gearbox on...