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I understand that they will operate 4x 747 under the Cyprus AOC and leave the 1011's where they are.
As far as advertising the positions vacant, remember that climb350 is for paying members only and that not everyone subscribes to it.
If you are looking for Europeans in general then you would most likely advertise in Flight or in another aviation magazine if you are looking for specific nationals or use a company like Parc.
Regarding validations they are suposed to be issued on a Onetime deal for six months. Exceptions can be made but only for an extra six months for a maximum of one year.