DenizD,
Don't take it so personally bro, I wasn't trying to attack you.
I clearly said these aircraft are operated by
3rd parties. And yes, they do/used to contract/operate MD 11's.
Etihad contracts World for MD-11 freighter service (Monday, October 08, 2007)
Abu Dhabi carrier Etihad Airways’ cargo unit has contracted US operator World Airways to provide Boeing MD-11 freighter service linking Frankfurt, Shanghai and Mumbai...
No offence intended 