Oxenos,
Thank you, far more enlightened and far more accurate that I could ever have been, re the Translation units, I finished up with around 400 boxes of the things when all the stock was being disposed of, the good ones went to the pylon racers the rest we stripped down and scrapped, that's how I saw so many service cards, and later when I met with the Pelican 16 crew, they came up to my warehouse to try and get hold of many priceless spares, they explained their flight ended by the failure of the TUs on two engines on one wing, leaving them flying in a giant circle with not enough control to land properly, or indeed make to a good enough landing strip, all the crew and pax survived the resultant desert night landing , but it was a very great loss to the SAAF people losing Pelican 16
Peter R-B