Evolution of Jet Engine fuel control system from hydro mechanical to digital is something worth discussing. FCU to UFC (F-100 engine), supported by EEC then DEEC. Now we have FADEC (Full Authority Digital Engine Control) installed on latest RD-93/33 and WS-10 engines.
Extent of ToT PAF to acquire from the manufacturers is the interesting subject which may be addressed.
In my opinion. PAC PAF will negotiate for ToT which will include complete overhauling facility consisting of test rig(s) and other overhauling tools and equipment. Training of manpower to conduct such maintenance will also be the part of ToT.
Though this type of facility will provide insight knowledge of FADEC technology but it will not be enough to establish independent facility to design and manufacture such sophisticated components. However, it can be a stepping stone for further advancement.
I am not sure if PAC PAF already have overhauling facility for BARK 93 or otherwise. However, JF-17 engine smoke problem addressed in the past indicates our engineers were able to tweak the fuel control system. How? Needs some reliable info.
PS: Any ToT from non-western country is not simple. Language is the biggest issue. Russians and Chinese tech manuals are not like US and other western countries' tech manuals. Language, technical terms, symbols and abbreviations some or most of the times do not match with western standards.
PAC tech teams acquiring such knowledge have to exert lot of efforts to prepare these tech manuals at par of PAF standards.
@messiach