Don't worry thnarg, it has happened before. In fact I think I may have done it myself. If you go to
Post 1372 Page 69 you will find an Excell spreadsheet which has details of challenges posted on this thread. A search for the airfield name will show if it has appeared before. At least up until the last update which was about a year ago. With thanks to all those who have contributed to the maintenance of the spreadsheet.
Now this one:
