Having left the RAF I was involved in the repaint of the Ferranti 125 that had been involved in the development of the TIALD pod, they were operating out of Turnhouse and when setting up the TIALD on the aircraft they were presented with a feint image of the word FERRANTI in reverse across the screen, the engineer was telling me it took them ages to find out the cause. The jet was facing their ( closed I believe) metal hangar and it was detecting the thermal differences on the far hangar wall which had Ferranti painted in big white letters on the outside facing
