The program started with 50-50% shares on ownership and no official news came that it ever changed later. The 58% figure was about airframe manufacturing and that may have gone higher by now. A kill switch in F-16s, Rafales, F-35s (most likely) is possible. For Jf-17s its not possible since PAF is co-owner and secondly the aircraft is manufactured here and if ever PAC found out such thing it would be devastating for relationship and shatter the trust. Why would china ever do that. Makes zero sense.