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What's that supposed to mean? It doesn't affect anything that is already known about the pilot requesting a controlled decent of the aircraft to a lower altitude. If it was a medical situation, the pilot would have requested an emergency landing. Sometimes you are too clever by half.
It was mentioned that the accident investigators were in contact with the aircraft manufacturers about the exhaust system, and it is possible that the icing conditions at 5,000ft may have played a part, as events unfolded in a fairly short timeframe without any request for an emergency landing.