After 6 years unless you revalidated the type within this period you will be conspired " expired" so another type rating would be needed in any event. Probably you would be considered as non rated for application purposes, but having been through the mill before you may have an advantage. Agency work is a non starter as they require flight within the past 6 months, but as mentioned some other players may be interested based on your previous experience. 41 yr old as FO may be an issue if not current..