I'm not sure you are correct about this Abdul.
The one that was shot down in 1971 was indeed a Trident 1E with construction number 2131 ex-PIA AP-ATL operating for the PLAAF with serial number '256'.
The subject of YU's model is a Trident 2E construction number 2165 delivered new to CAAC in January 1975 as B-256 (yes, confusing isn't it!), then re-registered in 1980 to B-261. It was transferred in 1988 to Air China as B-2208 and written off March 22nd 1990 when it overran the wet runway on landing at Guilin - Liangjiang (KWL).
The Trident approached high and touched down far down the runway at Guilin Airport (KWL), China. The aircraft overran the runway onto soft ground. The runway was very wet following heavy ...
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