aircraft_photos table is restore from previous backup. All photos should be still there, but about 11000 photos lost their link to the aircraft. These buggy photos now show "N1" as registry number.
I'll try to fix them manually. If you have any buggy photos in your profolio, and can relink the photos to their correct aircraft, that will be a great help and much appreciated.
I also fixed the backup issue and will keep an eye on it for the next few days.
Again I am really sorry for the trouble.
Ken