OK, allow me to add my two pence worth - back in 1991 I was working at FLS Aerospace, at the same time as Dan-Air was going to the wall.
We had a radar scope in the rotable exchange pool, which went out on loan to Dan's because (allegedly) a disgruntled linie at LGW on hearing that he was about to lose his job, went on board a DA 737 and booted the display.
Whether it's true or not I have no idea, but the rumour was certainly doing the rounds at STN and LGW for a while.