PPRuNe Forums - View Single Post - TU154 out of Sochi is missing.
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Old 31st Dec 2016, 15:01
  #242 (permalink)  
lomapaseo
 
Join Date: Mar 2002
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That is a compressor disc, the damage is consistent with the engine producing power at a high setting at time of impact. The damage was caused by fragments of earlier stages and possibly other wreckage ingested by the still running engine.
Looks like a high transverse load across the non rotating structures sheared off the front and collapsed on the spinning blades. Seems to fit the early reports
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