Hi,
infrequentflyer789:
Finally, this crew knew they had UAS - "we’ve lost the speeds". That isn't the problem.
IMO, problem is
When you lost confidence in the machine you are operating.
If you bury (or not present assertively) an information of this magnitude you may have a situation when a non properly trained crew could be confused. I commented in an early post on the Albert Schweitzer quote. "Confidence is the greatest asset of any successful enterprise..."