Marshal Lin Biao PRC.
This is a very interesting subject. The China Aviation Museum in surburban Beijing is possibly the best place to ask about those photographs. They have a couple of Tridents and they are experts at assembling and dismantling just about anything.
I'm sure you know that Chairman Mao Tze-tung gave instructions that the aircraft and its occupants were to be left were it crashed. Are there any indications that his orders were carried out exactly or is there still something to be seen of the aircraft and its people? As a student of Chinese aviation history and Chinese political history I would be very gratefull if you could throw some light on this as yet unanswered question. The address of the museum is; China Aviation Museum, Xiantangshan, Changping, Beijing 102211. Its about 45 minutes by taxi from central Beijing, dont confuse it with the Military Museum which is in central Beijing. Good hunting, Regards.