My df was slightly behind yours, and army rather than airforce, but he worked with cymbeline radar.
Slightly outing, I was recently given a treadle singer sewing machine in good working order. It had been in their family since new, and used in the first world war for making uniforms for the troops. In the second world war, they used it to turn curtains from bombed out houses into children's clothes. I feel very fortunate to be the current caretaker of a small piece of history.