How do they know ?
I looked at the pdf on line and what I does not say is how they know the crew was habitually not performing the required checklist. "the pilots had neglected to perform complete flight control checks before 98% of their previous 175 takeoffs in the airplane, indicating that this oversight was habitual and not an anomaly."
I assume they must have the CVR data somewhere. Is there a requirement to store this data. If so for how long?
There is a lot of blame to go around here. Interesting and scary reading.
20driver