The 'cattle truck CL44 was, if memory serves, a true 44 with swing tail & was operated by Aerolineas Rio Platte or something like that (River Platte Airlines). Can't remember for the life of me where it was registered (Argentina??) but used to come in with cattle & leave with general freight. Transmeridian used to look after it at STN. I'm sure somebody will correct my failing memory where neccessary.
Ah, happy days!