I've just had one of those "why didn't I do this earlier" moments and Googled for Catalina/Conversion/RSU ... and I'm wondering if we might possibly be talking about "conversion to components"?
...and an addendum which, while having nothing to do with A24-101, makes for a fascinating read. Let's hope the link works for you, chaps. http://www.museum.wa.gov.au/maritime-archaeology-web/sites/default/files/history-and-archaeology-of-raaf-catalina-flying-boat-a24-1.pdf