The picture above has drawn our attention, thanks for posting the picture and comments. We would like to clarify this issue with further information.

The picture was taken in Muscat, Oman. The agency that is responsible for this project had a breakdown of their internal approval systems that resulted in the supplier being misinformed about the correct way to adhere the signage in question. The sign was taken down after 2 days, with an apology letter from the agency. A correct version of the sign
http://i50.tinypic.com/v5lc0h.jpg had displayed for a month.

Thank you for your time.

Serdar Ekrem Sirin
Advertising Manager
Turkish Airlines