@ HAMD
I think it has been as quick as 1 week and as long as 2 years.
I would think an average of 6-10 weeks. ( most of the longer wait periods have been for second officer positions.....it is horrible to wait so long but still you hear of good news even after such time. On the bright side it is possibly better than another ME airline that kicks you out of pool after 1 year.
Good luck