Hello Ken
All my airport photos have the same problem. I select the photo to see a preview and get a blank rectangle. If I click the icon in the corner of the rectangle and select open in new tab it comes up error 404 not found. If I look at my airport pictures via the photographer list on the home page they open. It is when I select the airport photos on my home page that they fail to open.
The following is just one example. It is supposed to be the Watch Office at Duxford.
https://www.airport-data.com/member/ajax_airport_photo_preview.php?
SID=343bf641a4343e87168706b0c91bfe93&id=41949