VX,
I seem to recall that the RIB almost did for Mrs Thatcher as she witnessed a drop in Studland Bay. The system was a classic case of overcomplication IMHO.
I have related in the Hercules thread the tale of our high level ULLA maldrop.
That was 'interesting' !
The big worry on the heavy drop trips was that for some reason the platform would not leave the a/c but the Type 66s would de-reef as they were deployed outside the a/c. The stuff of nightmares.