ksimboy,
ref tracked Rapier you may well be right. The missiles were mounted on a USA chassis not unlike that of the Lance. When loading any of these type of loads you had to get it nigh on perfectly lined up outside the a/c. Once on the a/c manoeuvring was very limited and if attempted could result in the tracks spitting the loadspreaders out to one side. I was on the trial for the tracked Rapier and I seem to recall problems getting the driver out once it was on the a/c. However this may be a (confused) recollection of something else. I was also involved with the trial of that well known Airfix kit, the Puma, into the 'K' after the demise of the Belfast. A number of 'gotchas' in that !