Phasing out older aircraft is part of the process of modernization in any air force. My question is what happens to those that are being replaced? Take the PLAAF for example, is there any standard 'recycling procedure' for their(old aircraft) parts or would they be sold to poorer countries as 2ndhand "old but still usable machines". Or would they be converted and modified for civilian utilization? or are they just gonna end up in the junkyards? Any1?