GY, perhaps the lack of sound effects in the simulator may explain this somewhat awkward phrasing in the English version,
Quote:
The background noise changed rapidly around 2 h 09 min 46. This change in the background noise was identified as possibly being characteristic of the presence of ice crystals but did not give rise to any specific comments from the crew, the phenomenon being little known to pilots at the time. The PNF then took the initiative to reduce the Mach towards 0.8 and the engine anti-ice devices were triggered.
Italics mine.
Agreed. I'm hoping that some of these 'issues' are recognized by the regulators, leading to enhanced requirements for training devices. The technology is available to provide representative cues for such conditions.
The RAeS ICATEE working group is doing some very good work related to upset training requirements, modeling approaches and similar. I am pretty sure many related to that effort are monitoring this thread.