messiach
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D&CM (design &concept modification) studies are all-together new projects and are rare in AS Engr. D&CM studies are usually emplyed as concept evolving studies. Even small changes are expensive. A leap from one block to another is infact a new aircraft. Single most important factor in FGF devel. is the availability of the fab-tech backbone. Pakistan is still a long way off but can work its way with chinese collaboration. Regarding FGF, to counter recent indian acquisitions, initial studies are in progress.
Hi,
I would say that the design is frozen for another 10 years at least---or possibly the life of the aircraft. Longevity creates stability and familiarity with the product---resulting in better operational capabilities and lower costs.