This aid was definitely for ships or just taxying in fog. At 25k feet we would blithely commit the "hooligans" to a HALO jump based on Decca before GPS came along. One snag with Decca was that at altitude (it was a surface aid) it used to slip lanes so just before releasing the brave boys in IMC the Nav would call Lyneham for a radar fix to confirm his position. We flew down a purple line mostly and called the lights on a red line crosscut. It worked quite well but there was no Decca where you needed it. The homemade chart shows where Fox Covert DZ should be.
Brian 48. Good to see you at the do. I wrapped Art's present in a cut off flying suit leg to remind him of what he did to mine in Akrotiri!
