I had thought this was Speke airport in Liverpool but my memory was deceiving me, someone kindly pointed out my error with a link to a photograph of this structure being at Manchester Airport. I do have a very strong memory of watching planes at Speke airport, perhaps that was on another occasion. As always its the pictures that speak truth, my words based on a forty year old memory are prone to error. The brain fills in the gaps and makes the story sound plausible. What else have I mistaken or misremembered?
I do want to find a truth in the work but it is important to say that I am an unreliable witness!