Is there much commonality between the RR Tyne in the CL-44-0 Guppy and those used in the C160 Transall? With lots of Transalls being withdrawn from service and replaced by A400M Atlas, perhaps the availability of spare parts for Tynes will be improved? If engine spares become plentiful, would this make restoring the wings, sorting the paperwork issues and operating the Guppy a more commercially viable proposition? Or is the lack of paperwork / design authority support an insurmountable problem?
I notice that the US register has the aircraft as a CL-44D4 rather than a CL-44-0. Is this an error or is the Guppy still considered to be a CL-44D4 for regulatory purposes?