USHerc, I was trying to keep it simple for the benefit of the originator of this thread who may not be au fait with the differing airdrop systems. I did not mean to imply that the US system was not capable of airdropping vehicles. I was once part of a team that looked into the interoperabilty of the differing systems (at Pope AFB) which is mainly where my slim knowledge of the -4 system comes from. The trial concluded that there were too many variables to make it viable And yes the UK system has disconnects for the parachutes. As I recall the UK MSP system is dropped from a lower height that the US equivalent which it is argued improves accuracy. In my experience it was reliable and well proven although like any airdrop there have been 'moments'. Certainly on the last 'Rodeo' I attended the UK MSP drop was very accurate (I have the pic somewhere !)
. I fear we may be in danger 'drifting' away from the original question.