Air Britain website has picture of CSZB at Lydd/Ferryfield in full Dan Air colours.
https://abpic.co.uk/pictures/view/1203287
As alluded above it (and possibly others) were used on various DA Jersey routes, either scheduled or IT, in summers of 79/80. Never saw one on ground at LBA but ISTR seeing them on climb out mid afternoon Sunday when I'd usually be preparing to return to my digs in London